/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/eca-rers2012/Problem16_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:26:15,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:26:15,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:26:15,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 05:26:15,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 05:26:15,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 05:26:15,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 05:26:15,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 05:26:15,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 05:26:15,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 05:26:15,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 05:26:15,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 05:26:15,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:26:15,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:26:15,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:26:15,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:26:15,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:26:15,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:26:15,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:26:15,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:26:15,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:26:15,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:26:15,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:26:15,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:26:15,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 05:26:15,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 05:26:15,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 05:26:15,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 05:26:15,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 05:26:15,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 05:26:15,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 05:26:15,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 05:26:15,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 05:26:15,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 05:26:15,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 05:26:15,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 05:26:15,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 05:26:15,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 05:26:15,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:26:15,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:26:15,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:26:15,591 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 05:26:15,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:26:15,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:26:15,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:26:15,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:26:15,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:26:15,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:26:15,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:26:15,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:26:15,632 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:26:15,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:26:15,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:26:15,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:26:15,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:26:15,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:26:15,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:26:15,634 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:26:15,634 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:26:15,634 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:26:15,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:26:15,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:26:15,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:26:15,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:26:15,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:26:15,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:26:15,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:26:15,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:26:15,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:26:15,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:26:15,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:26:15,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:26:15,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:26:15,898 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:26:15,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label08.c [2022-01-10 05:26:15,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054542fc1/04325441022649beb84117b54d6f454b/FLAG2dc91e12f [2022-01-10 05:26:16,505 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:26:16,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label08.c [2022-01-10 05:26:16,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054542fc1/04325441022649beb84117b54d6f454b/FLAG2dc91e12f [2022-01-10 05:26:16,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054542fc1/04325441022649beb84117b54d6f454b [2022-01-10 05:26:16,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:26:16,776 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:26:16,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:26:16,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:26:16,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:26:16,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:16" (1/1) ... [2022-01-10 05:26:16,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786834e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16, skipping insertion in model container [2022-01-10 05:26:16,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:16" (1/1) ... [2022-01-10 05:26:16,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:26:16,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:26:17,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label08.c[2006,2019] [2022-01-10 05:26:17,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:26:17,496 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:26:17,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label08.c[2006,2019] [2022-01-10 05:26:17,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:26:17,721 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:26:17,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17 WrapperNode [2022-01-10 05:26:17,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:26:17,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:26:17,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:26:17,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:26:17,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,848 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1765 [2022-01-10 05:26:17,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:26:17,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:26:17,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:26:17,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:26:17,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:26:17,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:26:17,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:26:17,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:26:17,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (1/1) ... [2022-01-10 05:26:17,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:26:17,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:26:17,997 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 05:26:18,027 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 05:26:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:26:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:26:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:26:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:26:18,106 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:26:18,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:26:25,392 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:26:25,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:26:25,410 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:26:25,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:25 BoogieIcfgContainer [2022-01-10 05:26:25,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:26:25,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:26:25,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:26:25,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:26:25,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:26:16" (1/3) ... [2022-01-10 05:26:25,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a771ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:25, skipping insertion in model container [2022-01-10 05:26:25,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:17" (2/3) ... [2022-01-10 05:26:25,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a771ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:25, skipping insertion in model container [2022-01-10 05:26:25,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:25" (3/3) ... [2022-01-10 05:26:25,423 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label08.c [2022-01-10 05:26:25,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:26:25,435 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:26:25,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:26:25,511 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 05:26:25,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:26:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states 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 05:26:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 05:26:25,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:26:25,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:26:25,535 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:26:25,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:26:25,540 INFO L85 PathProgramCache]: Analyzing trace with hash 156847385, now seen corresponding path program 1 times [2022-01-10 05:26:25,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:26:25,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727023407] [2022-01-10 05:26:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:26:25,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:26:25,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:26:25,557 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 05:26:25,558 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 05:26:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:26:25,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:26:25,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:26:25,757 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 05:26:25,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:26:25,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:26:25,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727023407] [2022-01-10 05:26:25,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727023407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:26:25,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:26:25,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:26:25,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715633269] [2022-01-10 05:26:25,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:26:25,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:26:25,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:26:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:26:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:26:25,798 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 05:26:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:26:34,990 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2022-01-10 05:26:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:26:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-10 05:26:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:26:35,006 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 05:26:35,007 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 05:26:35,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 05:26:35,014 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 328 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:26:35,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 290 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-01-10 05:26:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 05:26:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 05:26:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.4826021180030258) internal successors, (980), 661 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 05:26:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 980 transitions. [2022-01-10 05:26:35,088 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 980 transitions. Word has length 17 [2022-01-10 05:26:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:26:35,088 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 980 transitions. [2022-01-10 05:26:35,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 05:26:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 980 transitions. [2022-01-10 05:26:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 05:26:35,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:26:35,091 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] [2022-01-10 05:26:35,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:26:35,292 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 05:26:35,292 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:26:35,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:26:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1951878136, now seen corresponding path program 1 times [2022-01-10 05:26:35,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:26:35,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508730176] [2022-01-10 05:26:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:26:35,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:26:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:26:35,298 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 05:26:35,301 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 05:26:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:26:35,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:26:35,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:26:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:35,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:26:35,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:26:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508730176] [2022-01-10 05:26:35,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508730176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:26:35,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:26:35,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:26:35,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080437013] [2022-01-10 05:26:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:26:35,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:26:35,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:26:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:26:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:26:35,633 INFO L87 Difference]: Start difference. First operand 662 states and 980 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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 05:26:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:26:41,874 INFO L93 Difference]: Finished difference Result 1651 states and 2341 transitions. [2022-01-10 05:26:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:26:41,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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 05:26:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:26:41,880 INFO L225 Difference]: With dead ends: 1651 [2022-01-10 05:26:41,880 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 05:26:41,882 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 05:26:41,883 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 260 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 05:26:41,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 249 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 05:26:41,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 05:26:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-01-10 05:26:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3525252525252525) internal successors, (1339), 990 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states 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 05:26:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1339 transitions. [2022-01-10 05:26:41,917 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1339 transitions. Word has length 89 [2022-01-10 05:26:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:26:41,917 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1339 transitions. [2022-01-10 05:26:41,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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 05:26:41,918 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1339 transitions. [2022-01-10 05:26:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 05:26:41,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:26:41,920 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] [2022-01-10 05:26:41,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 05:26:42,132 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 05:26:42,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:26:42,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:26:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash -706390549, now seen corresponding path program 1 times [2022-01-10 05:26:42,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:26:42,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045941692] [2022-01-10 05:26:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:26:42,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:26:42,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:26:42,137 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 05:26:42,175 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 05:26:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:26:42,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:26:42,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:26:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:42,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:26:42,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:26:42,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045941692] [2022-01-10 05:26:42,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045941692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:26:42,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:26:42,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:26:42,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764432608] [2022-01-10 05:26:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:26:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:26:42,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:26:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:26:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:26:42,396 INFO L87 Difference]: Start difference. First operand 991 states and 1339 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 05:26:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:26:50,756 INFO L93 Difference]: Finished difference Result 2638 states and 3653 transitions. [2022-01-10 05:26:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:26:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 05:26:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:26:50,764 INFO L225 Difference]: With dead ends: 2638 [2022-01-10 05:26:50,765 INFO L226 Difference]: Without dead ends: 1978 [2022-01-10 05:26:50,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 05:26:50,767 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 353 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:26:50,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 199 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-01-10 05:26:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-01-10 05:26:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2022-01-10 05:26:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2281234193222053) internal successors, (2428), 1977 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states 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 05:26:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2428 transitions. [2022-01-10 05:26:50,806 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2428 transitions. Word has length 104 [2022-01-10 05:26:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:26:50,807 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2428 transitions. [2022-01-10 05:26:50,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 05:26:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2428 transitions. [2022-01-10 05:26:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 05:26:50,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:26:50,812 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 05:26:50,824 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 05:26:51,022 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 05:26:51,022 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:26:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:26:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash -378917936, now seen corresponding path program 1 times [2022-01-10 05:26:51,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:26:51,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078178427] [2022-01-10 05:26:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:26:51,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:26:51,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:26:51,026 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 05:26:51,028 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 05:26:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:26:51,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 05:26:51,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:26:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:52,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:26:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:26:55,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:26:55,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078178427] [2022-01-10 05:26:55,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078178427] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:26:55,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:26:55,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 05:26:55,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636893671] [2022-01-10 05:26:55,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:26:55,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 05:26:55,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:26:55,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 05:26:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 05:26:55,982 INFO L87 Difference]: Start difference. First operand 1978 states and 2428 transitions. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 5 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 05:27:06,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:27:08,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:27:12,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []