/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:42:03,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:42:03,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:42:03,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-09-16 11:42:03,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:42:03,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:42:03,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:42:03,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:42:03,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:42:03,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:42:03,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:42:03,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:42:03,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:42:03,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:42:03,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:42:03,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:42:03,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:42:03,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:42:03,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:42:03,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:42:03,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:42:03,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:42:03,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:42:03,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:42:03,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:42:03,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:42:03,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:42:03,208 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:42:03,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:42:03,209 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:42:03,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:42:03,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:42:03,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:42:03,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:42:03,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:42:03,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:42:03,210 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:42:03,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:42:03,210 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:42:03,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:42:03,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:42:03,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:42:03,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:42:03,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:42:03,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:42:03,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:42:03,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:42:03,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:42:03,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:42:03,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:42:03,213 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:42:03,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:42:03,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:42:03,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:42:03,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:42:03,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:42:03,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:42:03,463 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:42:03,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2022-09-16 11:42:03,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d73a36b3/20823b7780b54e2595a745fce6a4aa32/FLAGa2c34d494 [2022-09-16 11:42:04,009 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:42:04,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2022-09-16 11:42:04,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d73a36b3/20823b7780b54e2595a745fce6a4aa32/FLAGa2c34d494 [2022-09-16 11:42:04,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d73a36b3/20823b7780b54e2595a745fce6a4aa32 [2022-09-16 11:42:04,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:42:04,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:42:04,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:42:04,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:42:04,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:42:04,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428c75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04, skipping insertion in model container [2022-09-16 11:42:04,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:42:04,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:42:04,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i[1107,1120] [2022-09-16 11:42:04,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:42:04,693 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:42:04,705 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i[1107,1120] [2022-09-16 11:42:04,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:42:04,774 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:42:04,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04 WrapperNode [2022-09-16 11:42:04,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:42:04,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:42:04,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:42:04,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:42:04,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,841 INFO L138 Inliner]: procedures = 163, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 113 [2022-09-16 11:42:04,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:42:04,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:42:04,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:42:04,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:42:04,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:42:04,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:42:04,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:42:04,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:42:04,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (1/1) ... [2022-09-16 11:42:04,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:42:04,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:04,909 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) [2022-09-16 11:42:04,923 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 [2022-09-16 11:42:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:42:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:42:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:42:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:42:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-16 11:42:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-16 11:42:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:42:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:42:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:42:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:42:04,950 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:42:05,087 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:42:05,089 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:42:05,259 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:42:05,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:42:05,268 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:42:05,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:42:05 BoogieIcfgContainer [2022-09-16 11:42:05,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:42:05,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:42:05,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:42:05,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:42:05,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:42:04" (1/3) ... [2022-09-16 11:42:05,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f83889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:42:05, skipping insertion in model container [2022-09-16 11:42:05,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:42:04" (2/3) ... [2022-09-16 11:42:05,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f83889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:42:05, skipping insertion in model container [2022-09-16 11:42:05,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:42:05" (3/3) ... [2022-09-16 11:42:05,279 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2022-09-16 11:42:05,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:42:05,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 11:42:05,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:42:05,396 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:42:05,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 134 transitions, 273 flow [2022-09-16 11:42:05,507 INFO L130 PetriNetUnfolder]: 4/137 cut-off events. [2022-09-16 11:42:05,507 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:42:05,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 4/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-09-16 11:42:05,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 134 transitions, 273 flow [2022-09-16 11:42:05,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 132 transitions, 267 flow [2022-09-16 11:42:05,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:42:05,538 INFO L357 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=false, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@379d5825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:42:05,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-16 11:42:05,553 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-09-16 11:42:05,553 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:42:05,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:05,554 INFO L208 CegarLoopForPetriNet]: 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] [2022-09-16 11:42:05,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:05,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1354117662, now seen corresponding path program 1 times [2022-09-16 11:42:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:05,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744806907] [2022-09-16 11:42:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:05,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:05,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744806907] [2022-09-16 11:42:05,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744806907] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:05,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:05,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:42:05,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649770560] [2022-09-16 11:42:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:05,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:05,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:05,872 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 134 [2022-09-16 11:42:05,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:05,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:05,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 134 [2022-09-16 11:42:05,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:05,935 INFO L130 PetriNetUnfolder]: 1/125 cut-off events. [2022-09-16 11:42:05,935 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:42:05,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 1/125 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 3/121 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2022-09-16 11:42:05,937 INFO L137 encePairwiseOnDemand]: 127/134 looper letters, 9 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2022-09-16 11:42:05,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 125 transitions, 277 flow [2022-09-16 11:42:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2022-09-16 11:42:05,964 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8746268656716418 [2022-09-16 11:42:05,965 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2022-09-16 11:42:05,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2022-09-16 11:42:05,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:05,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2022-09-16 11:42:05,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:05,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:05,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:05,993 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 267 flow. Second operand 5 states and 586 transitions. [2022-09-16 11:42:05,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 125 transitions, 277 flow [2022-09-16 11:42:06,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 125 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:06,012 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 258 flow [2022-09-16 11:42:06,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2022-09-16 11:42:06,030 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2022-09-16 11:42:06,030 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 258 flow [2022-09-16 11:42:06,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:06,031 INFO L208 CegarLoopForPetriNet]: 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] [2022-09-16 11:42:06,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:42:06,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:06,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:06,032 INFO L85 PathProgramCache]: Analyzing trace with hash 972025753, now seen corresponding path program 1 times [2022-09-16 11:42:06,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:06,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448474495] [2022-09-16 11:42:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:06,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:06,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:06,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448474495] [2022-09-16 11:42:06,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448474495] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:06,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:06,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:42:06,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476181563] [2022-09-16 11:42:06,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:06,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:42:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:42:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:42:06,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 134 [2022-09-16 11:42:06,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:06,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 134 [2022-09-16 11:42:06,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:06,183 INFO L130 PetriNetUnfolder]: 1/124 cut-off events. [2022-09-16 11:42:06,184 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:42:06,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 1/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 94. Up to 7 conditions per place. [2022-09-16 11:42:06,187 INFO L137 encePairwiseOnDemand]: 132/134 looper letters, 8 selfloop transitions, 1 changer transitions 17/124 dead transitions. [2022-09-16 11:42:06,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 124 transitions, 274 flow [2022-09-16 11:42:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:42:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:42:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2022-09-16 11:42:06,192 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8905472636815921 [2022-09-16 11:42:06,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2022-09-16 11:42:06,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2022-09-16 11:42:06,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:06,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2022-09-16 11:42:06,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,203 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 258 flow. Second operand 3 states and 358 transitions. [2022-09-16 11:42:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 124 transitions, 274 flow [2022-09-16 11:42:06,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:42:06,207 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 219 flow [2022-09-16 11:42:06,207 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2022-09-16 11:42:06,208 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -3 predicate places. [2022-09-16 11:42:06,208 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 219 flow [2022-09-16 11:42:06,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:06,209 INFO L208 CegarLoopForPetriNet]: 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] [2022-09-16 11:42:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:42:06,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash 164858241, now seen corresponding path program 1 times [2022-09-16 11:42:06,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:06,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814647619] [2022-09-16 11:42:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:06,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814647619] [2022-09-16 11:42:06,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814647619] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:06,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:06,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:42:06,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810473978] [2022-09-16 11:42:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:42:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:42:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:42:06,369 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 134 [2022-09-16 11:42:06,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:06,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 134 [2022-09-16 11:42:06,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:06,446 INFO L130 PetriNetUnfolder]: 5/250 cut-off events. [2022-09-16 11:42:06,447 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:42:06,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 250 events. 5/250 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 688 event pairs, 0 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 239. Up to 12 conditions per place. [2022-09-16 11:42:06,448 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 11 selfloop transitions, 2 changer transitions 8/117 dead transitions. [2022-09-16 11:42:06,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 117 transitions, 281 flow [2022-09-16 11:42:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2022-09-16 11:42:06,452 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8805970149253731 [2022-09-16 11:42:06,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2022-09-16 11:42:06,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2022-09-16 11:42:06,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:06,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2022-09-16 11:42:06,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,458 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,458 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 219 flow. Second operand 5 states and 590 transitions. [2022-09-16 11:42:06,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 117 transitions, 281 flow [2022-09-16 11:42:06,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:42:06,462 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 234 flow [2022-09-16 11:42:06,462 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2022-09-16 11:42:06,463 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -13 predicate places. [2022-09-16 11:42:06,463 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 234 flow [2022-09-16 11:42:06,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:06,464 INFO L208 CegarLoopForPetriNet]: 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] [2022-09-16 11:42:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:42:06,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 377779523, now seen corresponding path program 1 times [2022-09-16 11:42:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:06,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21068388] [2022-09-16 11:42:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:06,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21068388] [2022-09-16 11:42:06,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21068388] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:06,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:06,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:42:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368267033] [2022-09-16 11:42:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:06,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:42:06,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:42:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:42:06,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 134 [2022-09-16 11:42:06,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:06,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 134 [2022-09-16 11:42:06,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:06,826 INFO L130 PetriNetUnfolder]: 17/262 cut-off events. [2022-09-16 11:42:06,827 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 11:42:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 262 events. 17/262 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 811 event pairs, 6 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 333. Up to 31 conditions per place. [2022-09-16 11:42:06,831 INFO L137 encePairwiseOnDemand]: 126/134 looper letters, 23 selfloop transitions, 8 changer transitions 1/114 dead transitions. [2022-09-16 11:42:06,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 114 transitions, 312 flow [2022-09-16 11:42:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2022-09-16 11:42:06,833 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8059701492537313 [2022-09-16 11:42:06,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2022-09-16 11:42:06,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2022-09-16 11:42:06,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:06,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2022-09-16 11:42:06,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,839 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,839 INFO L175 Difference]: Start difference. First operand has 119 places, 107 transitions, 234 flow. Second operand 5 states and 540 transitions. [2022-09-16 11:42:06,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 114 transitions, 312 flow [2022-09-16 11:42:06,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 300 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-09-16 11:42:06,847 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 248 flow [2022-09-16 11:42:06,847 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2022-09-16 11:42:06,848 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -14 predicate places. [2022-09-16 11:42:06,848 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 248 flow [2022-09-16 11:42:06,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:06,849 INFO L208 CegarLoopForPetriNet]: 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] [2022-09-16 11:42:06,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:42:06,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash -610222729, now seen corresponding path program 1 times [2022-09-16 11:42:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:06,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277500945] [2022-09-16 11:42:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:06,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:07,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:07,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277500945] [2022-09-16 11:42:07,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277500945] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:07,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:07,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:42:07,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283244058] [2022-09-16 11:42:07,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:07,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:42:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:42:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:42:07,031 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 134 [2022-09-16 11:42:07,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:07,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 134 [2022-09-16 11:42:07,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:07,131 INFO L130 PetriNetUnfolder]: 15/236 cut-off events. [2022-09-16 11:42:07,131 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-09-16 11:42:07,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 236 events. 15/236 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 650 event pairs, 6 based on Foata normal form. 2/233 useless extension candidates. Maximal degree in co-relation 283. Up to 32 conditions per place. [2022-09-16 11:42:07,132 INFO L137 encePairwiseOnDemand]: 127/134 looper letters, 24 selfloop transitions, 7 changer transitions 0/113 dead transitions. [2022-09-16 11:42:07,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 113 transitions, 326 flow [2022-09-16 11:42:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:42:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:42:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2022-09-16 11:42:07,134 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-09-16 11:42:07,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2022-09-16 11:42:07,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2022-09-16 11:42:07,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:07,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2022-09-16 11:42:07,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,138 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 248 flow. Second operand 5 states and 536 transitions. [2022-09-16 11:42:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 113 transitions, 326 flow [2022-09-16 11:42:07,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 323 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:42:07,145 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 275 flow [2022-09-16 11:42:07,145 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2022-09-16 11:42:07,149 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -11 predicate places. [2022-09-16 11:42:07,149 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 275 flow [2022-09-16 11:42:07,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:07,150 INFO L208 CegarLoopForPetriNet]: 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] [2022-09-16 11:42:07,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:42:07,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:07,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1610125980, now seen corresponding path program 1 times [2022-09-16 11:42:07,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:07,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986085785] [2022-09-16 11:42:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:07,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:42:07,205 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 11:42:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:42:07,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 11:42:07,270 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 11:42:07,271 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-09-16 11:42:07,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-09-16 11:42:07,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 7 remaining) [2022-09-16 11:42:07,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-09-16 11:42:07,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-09-16 11:42:07,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-09-16 11:42:07,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-09-16 11:42:07,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:42:07,275 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-09-16 11:42:07,281 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:42:07,281 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:42:07,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:42:07 BasicIcfg [2022-09-16 11:42:07,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:42:07,352 INFO L158 Benchmark]: Toolchain (without parser) took 3046.69ms. Allocated memory was 186.6MB in the beginning and 295.7MB in the end (delta: 109.1MB). Free memory was 160.4MB in the beginning and 189.6MB in the end (delta: -29.1MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. [2022-09-16 11:42:07,352 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory was 146.5MB in the beginning and 146.4MB in the end (delta: 107.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:42:07,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.82ms. Allocated memory was 186.6MB in the beginning and 295.7MB in the end (delta: 109.1MB). Free memory was 160.1MB in the beginning and 258.4MB in the end (delta: -98.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-09-16 11:42:07,353 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.86ms. Allocated memory is still 295.7MB. Free memory was 258.4MB in the beginning and 256.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:42:07,354 INFO L158 Benchmark]: Boogie Preprocessor took 30.75ms. Allocated memory is still 295.7MB. Free memory was 256.4MB in the beginning and 255.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:42:07,354 INFO L158 Benchmark]: RCFGBuilder took 396.50ms. Allocated memory is still 295.7MB. Free memory was 255.0MB in the beginning and 239.9MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-16 11:42:07,355 INFO L158 Benchmark]: TraceAbstraction took 2079.81ms. Allocated memory is still 295.7MB. Free memory was 239.2MB in the beginning and 189.6MB in the end (delta: 49.7MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2022-09-16 11:42:07,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory was 146.5MB in the beginning and 146.4MB in the end (delta: 107.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 468.82ms. Allocated memory was 186.6MB in the beginning and 295.7MB in the end (delta: 109.1MB). Free memory was 160.1MB in the beginning and 258.4MB in the end (delta: -98.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.86ms. Allocated memory is still 295.7MB. Free memory was 258.4MB in the beginning and 256.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.75ms. Allocated memory is still 295.7MB. Free memory was 256.4MB in the beginning and 255.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 396.50ms. Allocated memory is still 295.7MB. Free memory was 255.0MB in the beginning and 239.9MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2079.81ms. Allocated memory is still 295.7MB. Free memory was 239.2MB in the beginning and 189.6MB in the end (delta: 49.7MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 701]: integer overflow possible integer overflow possible We found a FailurePath: [L682] 0 int g = 0; VAL [g=0] [L683] 0 int h = 0; VAL [g=0, h=0] [L684] 0 int i = 0; VAL [g=0, h=0, i=0] [L685] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [A={3:0}, g=0, h=0, i=0] [L686] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [A={3:0}, B={4:0}, g=0, h=0, i=0] [L687] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0] [L710] 0 int x = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=2147483617, A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, x=2147483617] [L711] COND TRUE 0 x > -1000 VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, x=2147483617] [L712] 0 pthread_t id; VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, id={6:0}, x=2147483617] [L713] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, id={6:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=2147483617] [L689] 1 int x = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, A={3:0}, arg={0:0}, arg={0:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, x=0] [L690] 1 int y = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, A={3:0}, arg={0:0}, arg={0:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, x=0, y=0] [L691] 1 int z = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, A={3:0}, arg={0:0}, arg={0:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, x=0, y=0, z=0] [L692] COND TRUE 1 x < 1000 VAL [A={3:0}, arg={0:0}, arg={0:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, x=0, y=0, z=0] [L716] 0 i = 11 VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=2147483617] [L717] 0 g = x VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=0, i=11, id={6:0}, x=2147483617] [L718] EXPR 0 x - 17 VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=0, i=11, id={6:0}, x=2147483617] [L718] 0 h = x - 17 VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483600, i=11, id={6:0}, x=2147483617] [L721] 0 h = x VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483617, i=11, id={6:0}, x=2147483617] [L695] 1 x = g VAL [A={3:0}, arg={0:0}, arg={0:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=0, z=0] [L696] 1 y = h VAL [A={3:0}, arg={0:0}, arg={0:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=2147483617, z=0] [L697] CALL 1 __VERIFIER_assert(y <= x) [L19] COND FALSE 1 !(!(cond)) VAL [\old(cond)=1, A={3:0}, B={4:0}, C={5:0}, cond=1, g=2147483617, h=2147483617, i=11] [L697] RET 1 __VERIFIER_assert(y <= x) [L699] CALL 1 __VERIFIER_assert(x == y) [L19] COND FALSE 1 !(!(cond)) VAL [\old(cond)=1, A={3:0}, B={4:0}, C={5:0}, cond=1, g=2147483617, h=2147483617, i=11] [L699] RET 1 __VERIFIER_assert(x == y) [L701] 1 x + 31 VAL [A={3:0}, arg={0:0}, arg={0:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=2147483617, z=0] - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 186 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 23 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 458 NumberOfCodeBlocks, 458 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 1090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-09-16 11:42:07,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...