/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:31:10,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:31:10,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:31:10,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:31:10,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:31:10,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:31:10,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:31:10,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:31:10,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:31:10,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:31:10,185 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:31:10,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:31:10,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:31:10,186 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:31:10,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:31:10,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:31:10,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:31:10,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:31:10,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:31:10,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:31:10,188 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:31:10,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:31:10,188 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:31:10,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:31:10,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:31:10,189 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:31:10,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:31:10,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:31:10,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:31:10,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:31:10,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:31:10,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:31:10,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:31:10,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:31:10,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:31:10,192 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:31:10,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:31:10,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:31:10,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:31:10,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:31:10,514 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:31:10,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-26 22:31:11,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:31:11,996 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:31:11,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-26 22:31:12,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3a061e5/5cb97774f5574ad98067d9cfb10554ec/FLAG3beb55398 [2023-08-26 22:31:12,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3a061e5/5cb97774f5574ad98067d9cfb10554ec [2023-08-26 22:31:12,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:31:12,027 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:31:12,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:31:12,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:31:12,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:31:12,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13754506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12, skipping insertion in model container [2023-08-26 22:31:12,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,067 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:31:12,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:31:12,438 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:31:12,468 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:31:12,469 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:31:12,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:31:12,544 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:31:12,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12 WrapperNode [2023-08-26 22:31:12,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:31:12,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:31:12,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:31:12,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:31:12,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,617 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 228 [2023-08-26 22:31:12,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:31:12,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:31:12,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:31:12,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:31:12,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,650 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:31:12,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:31:12,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:31:12,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:31:12,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (1/1) ... [2023-08-26 22:31:12,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:31:12,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:31:12,710 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) [2023-08-26 22:31:12,714 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 [2023-08-26 22:31:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:31:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 22:31:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 22:31:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:31:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:31:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:31:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:31:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 22:31:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 22:31:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:31:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:31:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:31:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:31:12,743 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:31:12,873 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:31:12,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:31:13,130 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:31:13,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:31:13,139 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-26 22:31:13,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:31:13 BoogieIcfgContainer [2023-08-26 22:31:13,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:31:13,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:31:13,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:31:13,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:31:13,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:31:12" (1/3) ... [2023-08-26 22:31:13,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c97a106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:31:13, skipping insertion in model container [2023-08-26 22:31:13,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:12" (2/3) ... [2023-08-26 22:31:13,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c97a106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:31:13, skipping insertion in model container [2023-08-26 22:31:13,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:31:13" (3/3) ... [2023-08-26 22:31:13,149 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-26 22:31:13,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:31:13,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-26 22:31:13,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:31:13,328 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:31:13,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 510 flow [2023-08-26 22:31:13,533 INFO L124 PetriNetUnfolderBase]: 61/444 cut-off events. [2023-08-26 22:31:13,533 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 22:31:13,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 444 events. 61/444 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1957 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-26 22:31:13,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 244 transitions, 510 flow [2023-08-26 22:31:13,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 244 transitions, 510 flow [2023-08-26 22:31:13,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:31:13,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 244 transitions, 510 flow [2023-08-26 22:31:13,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 244 transitions, 510 flow [2023-08-26 22:31:13,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 510 flow [2023-08-26 22:31:13,643 INFO L124 PetriNetUnfolderBase]: 61/444 cut-off events. [2023-08-26 22:31:13,644 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 22:31:13,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 444 events. 61/444 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1957 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-26 22:31:13,666 INFO L119 LiptonReduction]: Number of co-enabled transitions 25608 [2023-08-26 22:31:17,796 INFO L134 LiptonReduction]: Checked pairs total: 47316 [2023-08-26 22:31:17,797 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-26 22:31:17,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:31:17,814 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;@2d6e6ce0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:31:17,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-26 22:31:17,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:31:17,817 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 22:31:17,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:31:17,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:17,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:31:17,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:31:17,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 30359086, now seen corresponding path program 1 times [2023-08-26 22:31:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:17,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325248904] [2023-08-26 22:31:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:31:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325248904] [2023-08-26 22:31:18,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325248904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:18,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:18,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:31:18,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669980130] [2023-08-26 22:31:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:18,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:18,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:18,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 446 [2023-08-26 22:31:18,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 98 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:18,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:18,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 446 [2023-08-26 22:31:18,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:19,326 INFO L124 PetriNetUnfolderBase]: 8753/14254 cut-off events. [2023-08-26 22:31:19,326 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-08-26 22:31:19,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27955 conditions, 14254 events. 8753/14254 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 97331 event pairs, 4011 based on Foata normal form. 1316/10177 useless extension candidates. Maximal degree in co-relation 26771. Up to 13506 conditions per place. [2023-08-26 22:31:19,432 INFO L140 encePairwiseOnDemand]: 420/446 looper letters, 83 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-26 22:31:19,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 382 flow [2023-08-26 22:31:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2023-08-26 22:31:19,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373692077727952 [2023-08-26 22:31:19,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2023-08-26 22:31:19,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2023-08-26 22:31:19,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:19,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2023-08-26 22:31:19,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:19,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:19,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:19,468 INFO L175 Difference]: Start difference. First operand has 76 places, 98 transitions, 218 flow. Second operand 3 states and 719 transitions. [2023-08-26 22:31:19,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 382 flow [2023-08-26 22:31:19,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:31:19,478 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 180 flow [2023-08-26 22:31:19,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-08-26 22:31:19,485 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-08-26 22:31:19,485 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 180 flow [2023-08-26 22:31:19,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:19,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:19,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:31:19,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:31:19,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:31:19,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:19,488 INFO L85 PathProgramCache]: Analyzing trace with hash -889658639, now seen corresponding path program 1 times [2023-08-26 22:31:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:19,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094669618] [2023-08-26 22:31:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:19,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:31:19,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:31:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:31:19,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:31:19,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:31:19,587 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2023-08-26 22:31:19,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-26 22:31:19,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-26 22:31:19,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-26 22:31:19,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-08-26 22:31:19,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONASSERT (24 of 30 remaining) [2023-08-26 22:31:19,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-26 22:31:19,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-26 22:31:19,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-08-26 22:31:19,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-26 22:31:19,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-26 22:31:19,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-26 22:31:19,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-26 22:31:19,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-26 22:31:19,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 30 remaining) [2023-08-26 22:31:19,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-26 22:31:19,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-26 22:31:19,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-26 22:31:19,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-26 22:31:19,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONASSERT (10 of 30 remaining) [2023-08-26 22:31:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-26 22:31:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-26 22:31:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-26 22:31:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-26 22:31:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONASSERT (5 of 30 remaining) [2023-08-26 22:31:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-26 22:31:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-26 22:31:19,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-26 22:31:19,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-26 22:31:19,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONASSERT (0 of 30 remaining) [2023-08-26 22:31:19,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:31:19,596 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:31:19,601 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:31:19,602 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:31:19,658 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 22:31:19,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 382 transitions, 812 flow [2023-08-26 22:31:19,946 INFO L124 PetriNetUnfolderBase]: 205/1338 cut-off events. [2023-08-26 22:31:19,946 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-26 22:31:19,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1338 events. 205/1338 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8293 event pairs, 1 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 803. Up to 32 conditions per place. [2023-08-26 22:31:19,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 382 transitions, 812 flow [2023-08-26 22:31:19,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 382 transitions, 812 flow [2023-08-26 22:31:20,001 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:31:20,002 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 327 places, 382 transitions, 812 flow [2023-08-26 22:31:20,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 327 places, 382 transitions, 812 flow [2023-08-26 22:31:20,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 382 transitions, 812 flow [2023-08-26 22:31:20,271 INFO L124 PetriNetUnfolderBase]: 205/1338 cut-off events. [2023-08-26 22:31:20,271 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-26 22:31:20,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1338 events. 205/1338 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8293 event pairs, 1 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 803. Up to 32 conditions per place. [2023-08-26 22:31:20,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-08-26 22:31:25,247 INFO L134 LiptonReduction]: Checked pairs total: 212677 [2023-08-26 22:31:25,248 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-08-26 22:31:25,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:31:25,251 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;@2d6e6ce0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:31:25,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-26 22:31:25,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:31:25,253 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-26 22:31:25,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:31:25,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:25,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:31:25,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:31:25,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1721575867, now seen corresponding path program 1 times [2023-08-26 22:31:25,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:25,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69278103] [2023-08-26 22:31:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:25,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:31:25,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:25,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69278103] [2023-08-26 22:31:25,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69278103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:25,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:25,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:31:25,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493748858] [2023-08-26 22:31:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:25,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:25,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 682 [2023-08-26 22:31:25,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 178 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:25,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 682 [2023-08-26 22:31:25,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand