/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 INSUFFICIENT_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/36-apron_22-traces-write-centered-vs-meet-mutex_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:46:45,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:46:45,223 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 05:46:45,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:46:45,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:46:45,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:46:45,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:46:45,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:46:45,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:46:45,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:46:45,266 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:46:45,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:46:45,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:46:45,268 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:46:45,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:46:45,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:46:45,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:46:45,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:46:45,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:46:45,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:46:45,269 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:46:45,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:46:45,270 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:46:45,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:46:45,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:46:45,271 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:46:45,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:46:45,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:46:45,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:46:45,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:46:45,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:46:45,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:46:45,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:46:45,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:46:45,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:46:45,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:46:45,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:46:45,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:46:45,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:46:45,645 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:46:45,646 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:46:45,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-08-27 05:46:46,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:46:47,023 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:46:47,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-08-27 05:46:47,037 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c95e322/7a32f47d205e409a8eed32e35225a066/FLAG3149ec8af [2023-08-27 05:46:47,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c95e322/7a32f47d205e409a8eed32e35225a066 [2023-08-27 05:46:47,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:46:47,061 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:46:47,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:46:47,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:46:47,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:46:47,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142664f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47, skipping insertion in model container [2023-08-27 05:46:47,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,115 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:46:47,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:46:47,454 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:46:47,484 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 05:46:47,485 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-27 05:46:47,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:46:47,551 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:46:47,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47 WrapperNode [2023-08-27 05:46:47,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:46:47,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:46:47,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:46:47,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:46:47,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,616 INFO L138 Inliner]: procedures = 163, calls = 39, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 127 [2023-08-27 05:46:47,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:46:47,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:46:47,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:46:47,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:46:47,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:46:47,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:46:47,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:46:47,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:46:47,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (1/1) ... [2023-08-27 05:46:47,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:46:47,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:46:47,698 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 05:46:47,725 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 05:46:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:46:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:46:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:46:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:46:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:46:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:46:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:46:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:46:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:46:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:46:47,745 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 05:46:47,880 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:46:47,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:46:48,065 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:46:48,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:46:48,072 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 05:46:48,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:46:48 BoogieIcfgContainer [2023-08-27 05:46:48,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:46:48,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:46:48,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:46:48,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:46:48,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:46:47" (1/3) ... [2023-08-27 05:46:48,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe1de07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:46:48, skipping insertion in model container [2023-08-27 05:46:48,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:47" (2/3) ... [2023-08-27 05:46:48,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe1de07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:46:48, skipping insertion in model container [2023-08-27 05:46:48,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:46:48" (3/3) ... [2023-08-27 05:46:48,082 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-08-27 05:46:48,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:46:48,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 05:46:48,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:46:48,155 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 05:46:48,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 145 transitions, 295 flow [2023-08-27 05:46:48,273 INFO L124 PetriNetUnfolderBase]: 7/147 cut-off events. [2023-08-27 05:46:48,273 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:46:48,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 147 events. 7/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-27 05:46:48,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 145 transitions, 295 flow [2023-08-27 05:46:48,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 143 transitions, 289 flow [2023-08-27 05:46:48,292 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:46:48,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 143 transitions, 289 flow [2023-08-27 05:46:48,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 143 transitions, 289 flow [2023-08-27 05:46:48,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 143 transitions, 289 flow [2023-08-27 05:46:48,365 INFO L124 PetriNetUnfolderBase]: 7/143 cut-off events. [2023-08-27 05:46:48,366 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:46:48,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 143 events. 7/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-27 05:46:48,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 4118 [2023-08-27 05:46:52,773 INFO L134 LiptonReduction]: Checked pairs total: 12645 [2023-08-27 05:46:52,774 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-27 05:46:52,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 05:46:52,791 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;@3018c53c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:46:52,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 05:46:52,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:46:52,794 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-27 05:46:52,794 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:46:52,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:52,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 05:46:52,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:52,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:52,800 INFO L85 PathProgramCache]: Analyzing trace with hash -392401677, now seen corresponding path program 1 times [2023-08-27 05:46:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:52,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363215993] [2023-08-27 05:46:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:53,245 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 05:46:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363215993] [2023-08-27 05:46:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363215993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:53,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 05:46:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628459111] [2023-08-27 05:46:53,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:53,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 05:46:53,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:53,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 05:46:53,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 05:46:53,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 290 [2023-08-27 05:46:53,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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 05:46:53,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:53,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 290 [2023-08-27 05:46:53,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:53,452 INFO L124 PetriNetUnfolderBase]: 171/460 cut-off events. [2023-08-27 05:46:53,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:46:53,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 460 events. 171/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2364 event pairs, 22 based on Foata normal form. 22/363 useless extension candidates. Maximal degree in co-relation 850. Up to 258 conditions per place. [2023-08-27 05:46:53,456 INFO L140 encePairwiseOnDemand]: 277/290 looper letters, 51 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2023-08-27 05:46:53,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 253 flow [2023-08-27 05:46:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 05:46:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 05:46:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2023-08-27 05:46:53,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45448275862068965 [2023-08-27 05:46:53,473 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2023-08-27 05:46:53,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2023-08-27 05:46:53,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:53,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2023-08-27 05:46:53,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 05:46:53,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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 05:46:53,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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 05:46:53,490 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 81 flow. Second operand 5 states and 659 transitions. [2023-08-27 05:46:53,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 253 flow [2023-08-27 05:46:53,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:53,494 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 133 flow [2023-08-27 05:46:53,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-27 05:46:53,499 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-27 05:46:53,499 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 133 flow [2023-08-27 05:46:53,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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 05:46:53,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:53,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 05:46:53,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:46:53,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:53,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:53,501 INFO L85 PathProgramCache]: Analyzing trace with hash -393790829, now seen corresponding path program 1 times [2023-08-27 05:46:53,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:53,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276311937] [2023-08-27 05:46:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:53,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:53,544 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 05:46:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:53,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276311937] [2023-08-27 05:46:53,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276311937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:53,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:53,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 05:46:53,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340216660] [2023-08-27 05:46:53,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:46:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:53,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:46:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:46:53,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 290 [2023-08-27 05:46:53,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 05:46:53,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:53,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 290 [2023-08-27 05:46:53,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:53,620 INFO L124 PetriNetUnfolderBase]: 164/417 cut-off events. [2023-08-27 05:46:53,620 INFO L125 PetriNetUnfolderBase]: For 106/108 co-relation queries the response was YES. [2023-08-27 05:46:53,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 417 events. 164/417 cut-off events. For 106/108 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2072 event pairs, 128 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 947. Up to 353 conditions per place. [2023-08-27 05:46:53,623 INFO L140 encePairwiseOnDemand]: 288/290 looper letters, 30 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 05:46:53,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 184 flow [2023-08-27 05:46:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:46:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:46:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-27 05:46:53,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46091954022988507 [2023-08-27 05:46:53,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-27 05:46:53,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-27 05:46:53,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:53,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-27 05:46:53,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 05:46:53,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:53,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:53,630 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 133 flow. Second operand 3 states and 401 transitions. [2023-08-27 05:46:53,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 184 flow [2023-08-27 05:46:53,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:53,632 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 120 flow [2023-08-27 05:46:53,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-27 05:46:53,633 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-27 05:46:53,633 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 120 flow [2023-08-27 05:46:53,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 05:46:53,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:53,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 05:46:53,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:46:53,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:53,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash -393790896, now seen corresponding path program 1 times [2023-08-27 05:46:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:53,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765311616] [2023-08-27 05:46:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:53,673 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 05:46:53,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:53,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765311616] [2023-08-27 05:46:53,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765311616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:53,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:53,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 05:46:53,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283673685] [2023-08-27 05:46:53,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:53,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:46:53,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:53,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:46:53,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:46:53,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 290 [2023-08-27 05:46:53,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 05:46:53,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:53,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 290 [2023-08-27 05:46:53,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:53,738 INFO L124 PetriNetUnfolderBase]: 150/374 cut-off events. [2023-08-27 05:46:53,739 INFO L125 PetriNetUnfolderBase]: For 102/104 co-relation queries the response was YES. [2023-08-27 05:46:53,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 374 events. 150/374 cut-off events. For 102/104 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1734 event pairs, 115 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 812. Up to 311 conditions per place. [2023-08-27 05:46:53,741 INFO L140 encePairwiseOnDemand]: 288/290 looper letters, 22 selfloop transitions, 1 changer transitions 6/36 dead transitions. [2023-08-27 05:46:53,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 168 flow [2023-08-27 05:46:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:46:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:46:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-27 05:46:53,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2023-08-27 05:46:53,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-27 05:46:53,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-27 05:46:53,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:53,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-27 05:46:53,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 05:46:53,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:53,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:53,747 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 120 flow. Second operand 3 states and 400 transitions. [2023-08-27 05:46:53,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 168 flow [2023-08-27 05:46:53,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:53,749 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 95 flow [2023-08-27 05:46:53,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2023-08-27 05:46:53,750 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-27 05:46:53,750 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 95 flow [2023-08-27 05:46:53,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 05:46:53,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:53,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:53,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:46:53,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:53,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:53,751 INFO L85 PathProgramCache]: Analyzing trace with hash 859048190, now seen corresponding path program 1 times [2023-08-27 05:46:53,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:53,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667973859] [2023-08-27 05:46:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:53,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:53,938 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 05:46:53,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:53,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667973859] [2023-08-27 05:46:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667973859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:53,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:53,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220861611] [2023-08-27 05:46:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:53,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 290 [2023-08-27 05:46:53,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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 05:46:53,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:53,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 290 [2023-08-27 05:46:53,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,068 INFO L124 PetriNetUnfolderBase]: 104/286 cut-off events. [2023-08-27 05:46:54,068 INFO L125 PetriNetUnfolderBase]: For 71/73 co-relation queries the response was YES. [2023-08-27 05:46:54,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 286 events. 104/286 cut-off events. For 71/73 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1275 event pairs, 40 based on Foata normal form. 7/275 useless extension candidates. Maximal degree in co-relation 609. Up to 142 conditions per place. [2023-08-27 05:46:54,070 INFO L140 encePairwiseOnDemand]: 282/290 looper letters, 42 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-08-27 05:46:54,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 255 flow [2023-08-27 05:46:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 05:46:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 05:46:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 984 transitions. [2023-08-27 05:46:54,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241379310344828 [2023-08-27 05:46:54,073 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 984 transitions. [2023-08-27 05:46:54,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 984 transitions. [2023-08-27 05:46:54,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 984 transitions. [2023-08-27 05:46:54,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 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 05:46:54,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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 05:46:54,081 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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 05:46:54,081 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 95 flow. Second operand 8 states and 984 transitions. [2023-08-27 05:46:54,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 255 flow [2023-08-27 05:46:54,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:54,084 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 144 flow [2023-08-27 05:46:54,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-08-27 05:46:54,085 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-27 05:46:54,086 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 144 flow [2023-08-27 05:46:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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 05:46:54,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:54,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:46:54,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:54,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:54,088 INFO L85 PathProgramCache]: Analyzing trace with hash 633513654, now seen corresponding path program 1 times [2023-08-27 05:46:54,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:54,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190425124] [2023-08-27 05:46:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:54,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:54,181 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 05:46:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:54,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190425124] [2023-08-27 05:46:54,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190425124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:54,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923398391] [2023-08-27 05:46:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:54,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:46:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:46:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:46:54,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 290 [2023-08-27 05:46:54,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 05:46:54,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:54,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 290 [2023-08-27 05:46:54,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,253 INFO L124 PetriNetUnfolderBase]: 87/256 cut-off events. [2023-08-27 05:46:54,253 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-08-27 05:46:54,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 256 events. 87/256 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1093 event pairs, 39 based on Foata normal form. 12/260 useless extension candidates. Maximal degree in co-relation 611. Up to 142 conditions per place. [2023-08-27 05:46:54,255 INFO L140 encePairwiseOnDemand]: 280/290 looper letters, 30 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2023-08-27 05:46:54,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 257 flow [2023-08-27 05:46:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:46:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:46:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-27 05:46:54,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425287356321839 [2023-08-27 05:46:54,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-27 05:46:54,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-27 05:46:54,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-27 05:46:54,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 05:46:54,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:54,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:54,266 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 144 flow. Second operand 3 states and 385 transitions. [2023-08-27 05:46:54,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 257 flow [2023-08-27 05:46:54,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 219 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-27 05:46:54,269 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 155 flow [2023-08-27 05:46:54,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-27 05:46:54,271 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-27 05:46:54,271 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 155 flow [2023-08-27 05:46:54,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 05:46:54,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:54,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:54,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:46:54,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:54,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 911627549, now seen corresponding path program 1 times [2023-08-27 05:46:54,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:54,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149231630] [2023-08-27 05:46:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:54,350 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 05:46:54,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:54,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149231630] [2023-08-27 05:46:54,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149231630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:54,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:54,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 05:46:54,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755094993] [2023-08-27 05:46:54,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:54,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:46:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:46:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:46:54,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 290 [2023-08-27 05:46:54,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 05:46:54,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:54,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 290 [2023-08-27 05:46:54,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,429 INFO L124 PetriNetUnfolderBase]: 92/259 cut-off events. [2023-08-27 05:46:54,429 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-08-27 05:46:54,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 259 events. 92/259 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1096 event pairs, 62 based on Foata normal form. 15/262 useless extension candidates. Maximal degree in co-relation 715. Up to 209 conditions per place. [2023-08-27 05:46:54,431 INFO L140 encePairwiseOnDemand]: 286/290 looper letters, 36 selfloop transitions, 3 changer transitions 1/45 dead transitions. [2023-08-27 05:46:54,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 269 flow [2023-08-27 05:46:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:46:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:46:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-27 05:46:54,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-08-27 05:46:54,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-27 05:46:54,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-27 05:46:54,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-27 05:46:54,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 05:46:54,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:54,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 05:46:54,436 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 155 flow. Second operand 3 states and 390 transitions. [2023-08-27 05:46:54,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 269 flow [2023-08-27 05:46:54,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:54,440 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 164 flow [2023-08-27 05:46:54,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-27 05:46:54,442 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2023-08-27 05:46:54,443 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 164 flow [2023-08-27 05:46:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 05:46:54,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:54,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:46:54,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:54,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2022729102, now seen corresponding path program 1 times [2023-08-27 05:46:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374380867] [2023-08-27 05:46:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:54,521 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 05:46:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374380867] [2023-08-27 05:46:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374380867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:54,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:54,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 05:46:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501697304] [2023-08-27 05:46:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:54,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:54,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:54,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 290 [2023-08-27 05:46:54,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 05:46:54,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:54,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 290 [2023-08-27 05:46:54,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,631 INFO L124 PetriNetUnfolderBase]: 77/241 cut-off events. [2023-08-27 05:46:54,632 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-08-27 05:46:54,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 241 events. 77/241 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1064 event pairs, 40 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 660. Up to 139 conditions per place. [2023-08-27 05:46:54,633 INFO L140 encePairwiseOnDemand]: 285/290 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-08-27 05:46:54,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 341 flow [2023-08-27 05:46:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 05:46:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 05:46:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-08-27 05:46:54,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-08-27 05:46:54,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-08-27 05:46:54,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-08-27 05:46:54,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-08-27 05:46:54,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:46:54,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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 05:46:54,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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 05:46:54,640 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 164 flow. Second operand 5 states and 590 transitions. [2023-08-27 05:46:54,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 341 flow [2023-08-27 05:46:54,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:54,642 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 191 flow [2023-08-27 05:46:54,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-27 05:46:54,643 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2023-08-27 05:46:54,643 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 191 flow [2023-08-27 05:46:54,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 05:46:54,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:54,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:54,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:46:54,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:54,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1413805902, now seen corresponding path program 1 times [2023-08-27 05:46:54,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:54,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958726200] [2023-08-27 05:46:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:54,757 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 05:46:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958726200] [2023-08-27 05:46:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958726200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:54,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:54,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:54,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738966428] [2023-08-27 05:46:54,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:54,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:54,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:54,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:54,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 290 [2023-08-27 05:46:54,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 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 05:46:54,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:54,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 290 [2023-08-27 05:46:54,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,859 INFO L124 PetriNetUnfolderBase]: 87/253 cut-off events. [2023-08-27 05:46:54,859 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-27 05:46:54,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 253 events. 87/253 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1080 event pairs, 48 based on Foata normal form. 5/247 useless extension candidates. Maximal degree in co-relation 746. Up to 161 conditions per place. [2023-08-27 05:46:54,861 INFO L140 encePairwiseOnDemand]: 283/290 looper letters, 44 selfloop transitions, 8 changer transitions 2/60 dead transitions. [2023-08-27 05:46:54,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 369 flow [2023-08-27 05:46:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 05:46:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 05:46:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 868 transitions. [2023-08-27 05:46:54,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2023-08-27 05:46:54,864 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 868 transitions. [2023-08-27 05:46:54,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 868 transitions. [2023-08-27 05:46:54,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 868 transitions. [2023-08-27 05:46:54,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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 05:46:54,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 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 05:46:54,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 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 05:46:54,872 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 191 flow. Second operand 7 states and 868 transitions. [2023-08-27 05:46:54,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 369 flow [2023-08-27 05:46:54,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 05:46:54,876 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 238 flow [2023-08-27 05:46:54,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-27 05:46:54,880 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-08-27 05:46:54,880 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 238 flow [2023-08-27 05:46:54,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 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 05:46:54,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:54,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:54,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:46:54,881 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:54,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1777455831, now seen corresponding path program 1 times [2023-08-27 05:46:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:54,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614572453] [2023-08-27 05:46:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:55,052 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 05:46:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614572453] [2023-08-27 05:46:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614572453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 05:46:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583347746] [2023-08-27 05:46:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:55,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 290 [2023-08-27 05:46:55,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 05:46:55,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:55,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 290 [2023-08-27 05:46:55,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:55,115 INFO L124 PetriNetUnfolderBase]: 63/204 cut-off events. [2023-08-27 05:46:55,116 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-27 05:46:55,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 204 events. 63/204 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 825 event pairs, 23 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 649. Up to 101 conditions per place. [2023-08-27 05:46:55,117 INFO L140 encePairwiseOnDemand]: 282/290 looper letters, 31 selfloop transitions, 13 changer transitions 3/57 dead transitions. [2023-08-27 05:46:55,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 393 flow [2023-08-27 05:46:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 05:46:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 05:46:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2023-08-27 05:46:55,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-08-27 05:46:55,119 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 472 transitions. [2023-08-27 05:46:55,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 472 transitions. [2023-08-27 05:46:55,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:55,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 472 transitions. [2023-08-27 05:46:55,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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 05:46:55,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 05:46:55,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 05:46:55,123 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 238 flow. Second operand 4 states and 472 transitions. [2023-08-27 05:46:55,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 393 flow [2023-08-27 05:46:55,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 383 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 05:46:55,126 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 285 flow [2023-08-27 05:46:55,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-27 05:46:55,127 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-08-27 05:46:55,127 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 285 flow [2023-08-27 05:46:55,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 05:46:55,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:55,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:55,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:46:55,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:55,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash -718852948, now seen corresponding path program 1 times [2023-08-27 05:46:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:55,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553563245] [2023-08-27 05:46:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:55,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:55,196 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 05:46:55,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:55,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553563245] [2023-08-27 05:46:55,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553563245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:55,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:55,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 05:46:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250561977] [2023-08-27 05:46:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:55,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:55,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 290 [2023-08-27 05:46:55,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 05:46:55,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:55,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 290 [2023-08-27 05:46:55,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:55,290 INFO L124 PetriNetUnfolderBase]: 57/185 cut-off events. [2023-08-27 05:46:55,290 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-08-27 05:46:55,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 185 events. 57/185 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 685 event pairs, 10 based on Foata normal form. 6/183 useless extension candidates. Maximal degree in co-relation 672. Up to 77 conditions per place. [2023-08-27 05:46:55,292 INFO L140 encePairwiseOnDemand]: 285/290 looper letters, 41 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-08-27 05:46:55,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 450 flow [2023-08-27 05:46:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 05:46:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 05:46:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 911 transitions. [2023-08-27 05:46:55,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39267241379310347 [2023-08-27 05:46:55,295 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 911 transitions. [2023-08-27 05:46:55,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 911 transitions. [2023-08-27 05:46:55,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:55,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 911 transitions. [2023-08-27 05:46:55,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.875) internal successors, (911), 8 states have internal predecessors, (911), 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 05:46:55,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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 05:46:55,302 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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 05:46:55,302 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 285 flow. Second operand 8 states and 911 transitions. [2023-08-27 05:46:55,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 450 flow [2023-08-27 05:46:55,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 05:46:55,305 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 289 flow [2023-08-27 05:46:55,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-08-27 05:46:55,306 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2023-08-27 05:46:55,306 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 289 flow [2023-08-27 05:46:55,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 05:46:55,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:55,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:55,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:46:55,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-27 05:46:55,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash -643356709, now seen corresponding path program 1 times [2023-08-27 05:46:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:55,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808182638] [2023-08-27 05:46:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:55,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:46:55,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:46:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:46:55,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:46:55,374 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:46:55,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-27 05:46:55,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 05:46:55,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 05:46:55,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-27 05:46:55,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (8 of 13 remaining) [2023-08-27 05:46:55,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-27 05:46:55,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-27 05:46:55,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 05:46:55,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (4 of 13 remaining) [2023-08-27 05:46:55,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-27 05:46:55,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 05:46:55,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONASSERT (1 of 13 remaining) [2023-08-27 05:46:55,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 13 remaining) [2023-08-27 05:46:55,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:46:55,379 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:55,383 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 05:46:55,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 05:46:55,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:46:55 BasicIcfg [2023-08-27 05:46:55,413 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 05:46:55,414 INFO L158 Benchmark]: Toolchain (without parser) took 8352.91ms. Allocated memory was 358.6MB in the beginning and 652.2MB in the end (delta: 293.6MB). Free memory was 332.8MB in the beginning and 618.4MB in the end (delta: -285.7MB). Peak memory consumption was 8.9MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,414 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory was 335.8MB in the beginning and 335.6MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 05:46:55,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.62ms. Allocated memory is still 358.6MB. Free memory was 332.8MB in the beginning and 313.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.82ms. Allocated memory is still 358.6MB. Free memory was 313.4MB in the beginning and 311.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,414 INFO L158 Benchmark]: Boogie Preprocessor took 33.35ms. Allocated memory is still 358.6MB. Free memory was 310.7MB in the beginning and 309.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,415 INFO L158 Benchmark]: RCFGBuilder took 422.40ms. Allocated memory is still 358.6MB. Free memory was 309.3MB in the beginning and 292.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,415 INFO L158 Benchmark]: TraceAbstraction took 7337.06ms. Allocated memory was 358.6MB in the beginning and 652.2MB in the end (delta: 293.6MB). Free memory was 291.8MB in the beginning and 618.4MB in the end (delta: -326.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 05:46:55,416 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 was 335.8MB in the beginning and 335.6MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 490.62ms. Allocated memory is still 358.6MB. Free memory was 332.8MB in the beginning and 313.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.82ms. Allocated memory is still 358.6MB. Free memory was 313.4MB in the beginning and 311.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.35ms. Allocated memory is still 358.6MB. Free memory was 310.7MB in the beginning and 309.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 422.40ms. Allocated memory is still 358.6MB. Free memory was 309.3MB in the beginning and 292.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 7337.06ms. Allocated memory was 358.6MB in the beginning and 652.2MB in the end (delta: 293.6MB). Free memory was 291.8MB in the beginning and 618.4MB in the end (delta: -326.6MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 140 PlacesBefore, 39 PlacesAfterwards, 143 TransitionsBefore, 39 TransitionsAfterwards, 4118 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 145 TotalNumberOfCompositions, 12645 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5376, independent: 4994, independent conditional: 0, independent unconditional: 4994, dependent: 382, dependent conditional: 0, dependent unconditional: 382, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2384, independent: 2316, independent conditional: 0, independent unconditional: 2316, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5376, independent: 2678, independent conditional: 0, independent unconditional: 2678, dependent: 314, dependent conditional: 0, dependent unconditional: 314, unknown: 2384, unknown conditional: 0, unknown unconditional: 2384] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 701]: integer overflow possible integer overflow possible We found a FailurePath: [L682] 0 int g = 0; [L683] 0 int h = 0; [L684] 0 int i = 0; [L685] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L686] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L687] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L710] 0 int x = __VERIFIER_nondet_int(); [L711] COND TRUE 0 x > -1000 [L712] 0 pthread_t id; [L713] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, id={6:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=2147483617] [L689] 1 int x = __VERIFIER_nondet_int(); [L690] 1 int y = __VERIFIER_nondet_int(); [L691] 1 int z = __VERIFIER_nondet_int(); [L692] COND TRUE 1 x < 1000 [L716] 0 i = 11 VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=2147483617] [L717] 0 g = x [L718] EXPR 0 x - 17 [L718] 0 h = x - 17 VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483600, i=11, id={6:0}, x=2147483617] [L721] 0 h = x VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483617, i=11, id={6:0}, x=2147483617] [L695] 1 x = g VAL [A={3:0}, B={4:0}, C={5:0}, arg={0:0}, arg={0:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=0, z=0] [L696] 1 y = h [L697] CALL 1 __VERIFIER_assert(y <= x) [L19] COND FALSE 1 !(!(cond)) [L697] RET 1 __VERIFIER_assert(y <= x) [L699] CALL 1 __VERIFIER_assert(x == y) [L19] COND FALSE 1 !(!(cond)) [L699] RET 1 __VERIFIER_assert(x == y) [L701] 1 x + 31 VAL [A={3:0}, B={4:0}, C={5:0}, arg={0:0}, arg={0:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=2147483617, z=0] - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 204 locations, 13 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: 7.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 678 IncrementalHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 15 mSDtfsCounter, 678 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=289occurred in iteration=10, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-27 05:46:55,435 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...