/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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/04-mutex_42-trylock_2mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:05:15,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:05:15,483 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 [2023-08-27 11:05:15,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:05:15,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:05:15,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:05:15,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:05:15,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:05:15,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:05:15,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:05:15,505 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:05:15,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:05:15,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:05:15,506 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:05:15,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:05:15,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:05:15,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:05:15,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:05:15,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:05:15,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:05:15,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:05:15,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:05:15,508 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:05:15,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:05:15,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:05:15,508 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:05:15,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:05:15,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:05:15,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:05:15,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:05:15,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:05:15,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:05:15,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:05:15,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:05:15,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:05:15,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:05:15,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:05:15,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:05:15,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:05:15,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:05:15,789 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:05:15,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_42-trylock_2mutex.i [2023-08-27 11:05:16,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:05:16,845 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:05:16,846 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_42-trylock_2mutex.i [2023-08-27 11:05:16,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f887ebf8/1c4d92f43f464883b40455b8f2beba58/FLAG6078526cb [2023-08-27 11:05:16,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f887ebf8/1c4d92f43f464883b40455b8f2beba58 [2023-08-27 11:05:16,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:05:16,877 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:05:16,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:05:16,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:05:16,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:05:16,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:16" (1/1) ... [2023-08-27 11:05:16,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f68d11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:16, skipping insertion in model container [2023-08-27 11:05:16,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:16" (1/1) ... [2023-08-27 11:05:16,925 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:05:17,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:05:17,172 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:05:17,191 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:05:17,192 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:05:17,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:05:17,230 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:05:17,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17 WrapperNode [2023-08-27 11:05:17,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:05:17,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:05:17,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:05:17,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:05:17,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,267 INFO L138 Inliner]: procedures = 163, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-08-27 11:05:17,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:05:17,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:05:17,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:05:17,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:05:17,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:05:17,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:05:17,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:05:17,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:05:17,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (1/1) ... [2023-08-27 11:05:17,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:05:17,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:05:17,316 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) [2023-08-27 11:05:17,340 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 [2023-08-27 11:05:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:05:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:05:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:05:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:05:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:05:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:05:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:05:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:05:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-27 11:05:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:05:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:05:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:05:17,368 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:05:17,483 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:05:17,484 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:05:17,632 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:05:17,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:05:17,636 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-27 11:05:17,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:17 BoogieIcfgContainer [2023-08-27 11:05:17,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:05:17,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:05:17,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:05:17,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:05:17,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:05:16" (1/3) ... [2023-08-27 11:05:17,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7d177f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:17, skipping insertion in model container [2023-08-27 11:05:17,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:17" (2/3) ... [2023-08-27 11:05:17,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7d177f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:17, skipping insertion in model container [2023-08-27 11:05:17,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:17" (3/3) ... [2023-08-27 11:05:17,642 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_42-trylock_2mutex.i [2023-08-27 11:05:17,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:05:17,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-27 11:05:17,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:05:17,699 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:05:17,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 164 flow [2023-08-27 11:05:17,762 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-08-27 11:05:17,763 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:05:17,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 2/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2023-08-27 11:05:17,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 164 flow [2023-08-27 11:05:17,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 70 transitions, 143 flow [2023-08-27 11:05:17,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:05:17,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 70 transitions, 143 flow [2023-08-27 11:05:17,787 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 70 transitions, 143 flow [2023-08-27 11:05:17,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 143 flow [2023-08-27 11:05:17,811 INFO L124 PetriNetUnfolderBase]: 2/70 cut-off events. [2023-08-27 11:05:17,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:17,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2023-08-27 11:05:17,813 INFO L119 LiptonReduction]: Number of co-enabled transitions 966 [2023-08-27 11:05:19,439 INFO L134 LiptonReduction]: Checked pairs total: 3010 [2023-08-27 11:05:19,440 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-27 11:05:19,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:05:19,452 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;@1984657e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:05:19,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-27 11:05:19,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:05:19,455 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 11:05:19,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:19,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:19,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:05:19,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:19,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash 8380606, now seen corresponding path program 1 times [2023-08-27 11:05:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615237779] [2023-08-27 11:05:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:19,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:19,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:19,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615237779] [2023-08-27 11:05:19,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615237779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:19,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:19,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:05:19,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470429314] [2023-08-27 11:05:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:19,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:19,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:19,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 132 [2023-08-27 11:05:19,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:19,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 132 [2023-08-27 11:05:19,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:19,702 INFO L124 PetriNetUnfolderBase]: 59/152 cut-off events. [2023-08-27 11:05:19,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:19,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 152 events. 59/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 598 event pairs, 20 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 275. Up to 101 conditions per place. [2023-08-27 11:05:19,705 INFO L140 encePairwiseOnDemand]: 127/132 looper letters, 25 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 11:05:19,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 127 flow [2023-08-27 11:05:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-27 11:05:19,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2023-08-27 11:05:19,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-27 11:05:19,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-27 11:05:19,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:19,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-27 11:05:19,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,729 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 53 flow. Second operand 3 states and 243 transitions. [2023-08-27 11:05:19,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 127 flow [2023-08-27 11:05:19,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:19,732 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 73 flow [2023-08-27 11:05:19,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-08-27 11:05:19,737 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-27 11:05:19,737 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 73 flow [2023-08-27 11:05:19,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:19,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:05:19,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:05:19,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:19,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash 259825268, now seen corresponding path program 1 times [2023-08-27 11:05:19,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:19,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873338404] [2023-08-27 11:05:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:19,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873338404] [2023-08-27 11:05:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873338404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:19,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:05:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233472488] [2023-08-27 11:05:19,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:19,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2023-08-27 11:05:19,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:19,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2023-08-27 11:05:19,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:19,889 INFO L124 PetriNetUnfolderBase]: 59/140 cut-off events. [2023-08-27 11:05:19,890 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-27 11:05:19,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 140 events. 59/140 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 481 event pairs, 34 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 297. Up to 89 conditions per place. [2023-08-27 11:05:19,891 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 25 selfloop transitions, 2 changer transitions 5/34 dead transitions. [2023-08-27 11:05:19,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 153 flow [2023-08-27 11:05:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-27 11:05:19,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5934343434343434 [2023-08-27 11:05:19,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-27 11:05:19,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-27 11:05:19,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:19,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-27 11:05:19,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,900 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 73 flow. Second operand 3 states and 235 transitions. [2023-08-27 11:05:19,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 153 flow [2023-08-27 11:05:19,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:19,901 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 68 flow [2023-08-27 11:05:19,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-27 11:05:19,902 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-27 11:05:19,902 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 68 flow [2023-08-27 11:05:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:19,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:05:19,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:19,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash 297195388, now seen corresponding path program 1 times [2023-08-27 11:05:19,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919083090] [2023-08-27 11:05:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919083090] [2023-08-27 11:05:19,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919083090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:19,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:19,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879713370] [2023-08-27 11:05:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:19,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:19,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:19,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2023-08-27 11:05:19,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:19,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:19,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2023-08-27 11:05:19,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:20,050 INFO L124 PetriNetUnfolderBase]: 21/85 cut-off events. [2023-08-27 11:05:20,050 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 11:05:20,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 85 events. 21/85 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 321 event pairs, 4 based on Foata normal form. 9/85 useless extension candidates. Maximal degree in co-relation 174. Up to 40 conditions per place. [2023-08-27 11:05:20,051 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 19 selfloop transitions, 8 changer transitions 1/33 dead transitions. [2023-08-27 11:05:20,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 151 flow [2023-08-27 11:05:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-27 11:05:20,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2023-08-27 11:05:20,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-27 11:05:20,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-27 11:05:20,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:20,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-27 11:05:20,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,054 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 68 flow. Second operand 3 states and 208 transitions. [2023-08-27 11:05:20,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 151 flow [2023-08-27 11:05:20,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:05:20,055 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 100 flow [2023-08-27 11:05:20,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-27 11:05:20,056 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-27 11:05:20,056 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 100 flow [2023-08-27 11:05:20,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:20,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:05:20,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:20,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1423384579, now seen corresponding path program 1 times [2023-08-27 11:05:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645272006] [2023-08-27 11:05:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:20,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:20,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645272006] [2023-08-27 11:05:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645272006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:20,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:20,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:05:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745218376] [2023-08-27 11:05:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:20,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:05:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:05:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:05:20,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2023-08-27 11:05:20,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:20,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2023-08-27 11:05:20,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:20,165 INFO L124 PetriNetUnfolderBase]: 28/93 cut-off events. [2023-08-27 11:05:20,165 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-27 11:05:20,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 93 events. 28/93 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 308 event pairs, 11 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 252. Up to 42 conditions per place. [2023-08-27 11:05:20,168 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 27 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2023-08-27 11:05:20,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 190 flow [2023-08-27 11:05:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:05:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:05:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2023-08-27 11:05:20,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-27 11:05:20,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2023-08-27 11:05:20,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2023-08-27 11:05:20,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:20,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2023-08-27 11:05:20,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,171 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 100 flow. Second operand 4 states and 286 transitions. [2023-08-27 11:05:20,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 190 flow [2023-08-27 11:05:20,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:20,174 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 94 flow [2023-08-27 11:05:20,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-27 11:05:20,175 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-27 11:05:20,175 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 94 flow [2023-08-27 11:05:20,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:20,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:20,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:05:20,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:20,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1423384559, now seen corresponding path program 1 times [2023-08-27 11:05:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:20,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038475308] [2023-08-27 11:05:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:20,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:20,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:20,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038475308] [2023-08-27 11:05:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038475308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:20,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:20,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:05:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740747165] [2023-08-27 11:05:20,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:20,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:05:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:20,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:05:20,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:05:20,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2023-08-27 11:05:20,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:20,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2023-08-27 11:05:20,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:20,264 INFO L124 PetriNetUnfolderBase]: 27/89 cut-off events. [2023-08-27 11:05:20,264 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 11:05:20,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 89 events. 27/89 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 291 event pairs, 8 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 230. Up to 42 conditions per place. [2023-08-27 11:05:20,266 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 25 selfloop transitions, 3 changer transitions 9/38 dead transitions. [2023-08-27 11:05:20,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 202 flow [2023-08-27 11:05:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:05:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:05:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-08-27 11:05:20,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2023-08-27 11:05:20,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-08-27 11:05:20,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-08-27 11:05:20,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:20,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-08-27 11:05:20,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,269 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,269 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 94 flow. Second operand 4 states and 290 transitions. [2023-08-27 11:05:20,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 202 flow [2023-08-27 11:05:20,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:05:20,270 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 70 flow [2023-08-27 11:05:20,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-27 11:05:20,272 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-27 11:05:20,272 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 70 flow [2023-08-27 11:05:20,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:20,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:05:20,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:20,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 315789950, now seen corresponding path program 1 times [2023-08-27 11:05:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642153045] [2023-08-27 11:05:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:20,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642153045] [2023-08-27 11:05:20,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642153045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:20,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:20,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484690181] [2023-08-27 11:05:20,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:20,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:20,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:20,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2023-08-27 11:05:20,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:20,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2023-08-27 11:05:20,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:20,394 INFO L124 PetriNetUnfolderBase]: 22/66 cut-off events. [2023-08-27 11:05:20,394 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 11:05:20,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 66 events. 22/66 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 2 based on Foata normal form. 3/63 useless extension candidates. Maximal degree in co-relation 170. Up to 32 conditions per place. [2023-08-27 11:05:20,394 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 26 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2023-08-27 11:05:20,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 160 flow [2023-08-27 11:05:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:05:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:05:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-27 11:05:20,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121212121212121 [2023-08-27 11:05:20,396 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-27 11:05:20,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-27 11:05:20,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:20,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-27 11:05:20,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,398 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 70 flow. Second operand 5 states and 338 transitions. [2023-08-27 11:05:20,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 160 flow [2023-08-27 11:05:20,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 30 transitions, 152 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:05:20,399 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 64 flow [2023-08-27 11:05:20,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-08-27 11:05:20,400 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-08-27 11:05:20,400 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 64 flow [2023-08-27 11:05:20,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:20,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:20,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:05:20,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:20,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash 973057176, now seen corresponding path program 1 times [2023-08-27 11:05:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41765882] [2023-08-27 11:05:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:20,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:20,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41765882] [2023-08-27 11:05:20,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41765882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:20,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:20,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157626395] [2023-08-27 11:05:20,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:20,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:20,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2023-08-27 11:05:20,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:20,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2023-08-27 11:05:20,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:20,486 INFO L124 PetriNetUnfolderBase]: 22/73 cut-off events. [2023-08-27 11:05:20,486 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 11:05:20,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 73 events. 22/73 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 4 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 188. Up to 44 conditions per place. [2023-08-27 11:05:20,487 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 18 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2023-08-27 11:05:20,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 137 flow [2023-08-27 11:05:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-08-27 11:05:20,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2023-08-27 11:05:20,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-08-27 11:05:20,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-08-27 11:05:20,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:20,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-08-27 11:05:20,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,489 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 64 flow. Second operand 3 states and 199 transitions. [2023-08-27 11:05:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 137 flow [2023-08-27 11:05:20,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 131 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:05:20,491 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 92 flow [2023-08-27 11:05:20,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-08-27 11:05:20,492 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-08-27 11:05:20,492 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 92 flow [2023-08-27 11:05:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:20,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:20,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:05:20,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-27 11:05:20,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:20,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2139255142, now seen corresponding path program 1 times [2023-08-27 11:05:20,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:20,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85484644] [2023-08-27 11:05:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:20,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:05:20,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:20,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85484644] [2023-08-27 11:05:20,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85484644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:20,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:20,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:20,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422235727] [2023-08-27 11:05:20,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:20,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:20,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:20,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:20,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2023-08-27 11:05:20,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:20,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2023-08-27 11:05:20,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:20,576 INFO L124 PetriNetUnfolderBase]: 24/73 cut-off events. [2023-08-27 11:05:20,576 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 11:05:20,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 73 events. 24/73 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 2 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 225. Up to 38 conditions per place. [2023-08-27 11:05:20,576 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-27 11:05:20,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 205 flow [2023-08-27 11:05:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:05:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:05:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2023-08-27 11:05:20,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106060606060606 [2023-08-27 11:05:20,578 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 337 transitions. [2023-08-27 11:05:20,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 337 transitions. [2023-08-27 11:05:20,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:20,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 337 transitions. [2023-08-27 11:05:20,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,580 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,580 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 92 flow. Second operand 5 states and 337 transitions. [2023-08-27 11:05:20,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 205 flow [2023-08-27 11:05:20,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:05:20,581 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-27 11:05:20,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-27 11:05:20,581 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-08-27 11:05:20,581 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-27 11:05:20,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:20,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-27 11:05:20,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-27 11:05:20,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-27 11:05:20,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-27 11:05:20,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:05:20,585 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:20,588 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:05:20,588 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:05:20,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:05:20 BasicIcfg [2023-08-27 11:05:20,590 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:05:20,590 INFO L158 Benchmark]: Toolchain (without parser) took 3713.31ms. Allocated memory was 358.6MB in the beginning and 469.8MB in the end (delta: 111.1MB). Free memory was 315.6MB in the beginning and 385.1MB in the end (delta: -69.5MB). Peak memory consumption was 43.8MB. Max. memory is 16.0GB. [2023-08-27 11:05:20,591 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 335.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:05:20,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.67ms. Allocated memory is still 358.6MB. Free memory was 315.6MB in the beginning and 296.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:05:20,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.31ms. Allocated memory is still 358.6MB. Free memory was 296.7MB in the beginning and 294.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:05:20,591 INFO L158 Benchmark]: Boogie Preprocessor took 14.62ms. Allocated memory is still 358.6MB. Free memory was 294.8MB in the beginning and 293.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:05:20,592 INFO L158 Benchmark]: RCFGBuilder took 352.93ms. Allocated memory is still 358.6MB. Free memory was 293.2MB in the beginning and 326.3MB in the end (delta: -33.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.0GB. [2023-08-27 11:05:20,592 INFO L158 Benchmark]: TraceAbstraction took 2951.24ms. Allocated memory was 358.6MB in the beginning and 469.8MB in the end (delta: 111.1MB). Free memory was 325.5MB in the beginning and 385.1MB in the end (delta: -59.6MB). Peak memory consumption was 51.1MB. Max. memory is 16.0GB. [2023-08-27 11:05:20,593 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 335.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 350.67ms. Allocated memory is still 358.6MB. Free memory was 315.6MB in the beginning and 296.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.31ms. Allocated memory is still 358.6MB. Free memory was 296.7MB in the beginning and 294.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.62ms. Allocated memory is still 358.6MB. Free memory was 294.8MB in the beginning and 293.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 352.93ms. Allocated memory is still 358.6MB. Free memory was 293.2MB in the beginning and 326.3MB in the end (delta: -33.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.0GB. * TraceAbstraction took 2951.24ms. Allocated memory was 358.6MB in the beginning and 469.8MB in the end (delta: 111.1MB). Free memory was 325.5MB in the beginning and 385.1MB in the end (delta: -59.6MB). Peak memory consumption was 51.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 72 PlacesBefore, 28 PlacesAfterwards, 70 TransitionsBefore, 25 TransitionsAfterwards, 966 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 3010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1150, independent: 962, independent conditional: 0, independent unconditional: 962, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 508, independent: 464, independent conditional: 0, independent unconditional: 464, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1150, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 508, unknown conditional: 0, unknown unconditional: 508] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 684]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 684]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 687]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 687]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 102 locations, 11 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 335 IncrementalHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 8 mSDtfsCounter, 335 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 11:05:20,611 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...