/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:16:01,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:16:01,556 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 11:16:01,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:16:01,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:16:01,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:16:01,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:16:01,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:16:01,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:16:01,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:16:01,598 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:16:01,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:16:01,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:16:01,600 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:16:01,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:16:01,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:16:01,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:16:01,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:16:01,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:16:01,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:16:01,601 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:16:01,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:16:01,602 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:16:01,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:16:01,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:16:01,603 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:16:01,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:16:01,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:16:01,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:16:01,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:16:01,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:16:01,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:16:01,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:16:01,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:16:01,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:16:01,605 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:16:01,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:16:01,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:16:01,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:16:01,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:16:01,877 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:16:01,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-08-27 11:16:02,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:16:03,223 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:16:03,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-08-27 11:16:03,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc5e2ff0/500df6c77fc14c5a94fc21113d1e8847/FLAGfd2b91b06 [2023-08-27 11:16:03,252 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc5e2ff0/500df6c77fc14c5a94fc21113d1e8847 [2023-08-27 11:16:03,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:16:03,256 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:16:03,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:16:03,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:16:03,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:16:03,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6b9cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03, skipping insertion in model container [2023-08-27 11:16:03,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,300 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:16:03,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:16:03,538 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:16:03,562 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-27 11:16:03,563 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 11:16:03,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:16:03,600 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:16:03,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03 WrapperNode [2023-08-27 11:16:03,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:16:03,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:16:03,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:16:03,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:16:03,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,633 INFO L138 Inliner]: procedures = 162, calls = 41, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 77 [2023-08-27 11:16:03,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:16:03,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:16:03,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:16:03,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:16:03,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:16:03,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:16:03,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:16:03,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:16:03,652 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (1/1) ... [2023-08-27 11:16:03,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:16:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:16:03,698 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 11:16:03,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 11:16:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:16:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:16:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:16:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:16:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:16:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:16:03,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:16:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:16:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:16:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:16:03,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:16:03,739 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:16:03,866 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:16:03,868 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:16:04,067 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:16:04,071 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:16:04,072 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 11:16:04,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:16:04 BoogieIcfgContainer [2023-08-27 11:16:04,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:16:04,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:16:04,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:16:04,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:16:04,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:16:03" (1/3) ... [2023-08-27 11:16:04,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ddd153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:16:04, skipping insertion in model container [2023-08-27 11:16:04,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:03" (2/3) ... [2023-08-27 11:16:04,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ddd153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:16:04, skipping insertion in model container [2023-08-27 11:16:04,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:16:04" (3/3) ... [2023-08-27 11:16:04,078 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-08-27 11:16:04,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:16:04,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-27 11:16:04,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:16:04,158 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:16:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 100 transitions, 208 flow [2023-08-27 11:16:04,240 INFO L124 PetriNetUnfolderBase]: 4/99 cut-off events. [2023-08-27 11:16:04,240 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:16:04,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 4/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-08-27 11:16:04,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 100 transitions, 208 flow [2023-08-27 11:16:04,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 84 transitions, 171 flow [2023-08-27 11:16:04,253 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:16:04,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 84 transitions, 171 flow [2023-08-27 11:16:04,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 84 transitions, 171 flow [2023-08-27 11:16:04,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 171 flow [2023-08-27 11:16:04,292 INFO L124 PetriNetUnfolderBase]: 2/84 cut-off events. [2023-08-27 11:16:04,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:16:04,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 2/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-27 11:16:04,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 1054 [2023-08-27 11:16:06,671 INFO L134 LiptonReduction]: Checked pairs total: 3337 [2023-08-27 11:16:06,671 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-27 11:16:06,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:16:06,685 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;@7ea194ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:16:06,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 11:16:06,687 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:16:06,688 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-08-27 11:16:06,688 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:16:06,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:06,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:16:06,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:06,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 321311551, now seen corresponding path program 1 times [2023-08-27 11:16:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:06,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689330147] [2023-08-27 11:16:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689330147] [2023-08-27 11:16:06,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689330147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:06,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:06,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:16:06,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557693333] [2023-08-27 11:16:06,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:16:06,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:16:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:16:06,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2023-08-27 11:16:06,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:06,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:06,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2023-08-27 11:16:06,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:07,011 INFO L124 PetriNetUnfolderBase]: 30/115 cut-off events. [2023-08-27 11:16:07,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:16:07,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 115 events. 30/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 385 event pairs, 25 based on Foata normal form. 6/118 useless extension candidates. Maximal degree in co-relation 190. Up to 66 conditions per place. [2023-08-27 11:16:07,013 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 17 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-27 11:16:07,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 95 flow [2023-08-27 11:16:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:16:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:16:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-08-27 11:16:07,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523255813953488 [2023-08-27 11:16:07,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-08-27 11:16:07,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-08-27 11:16:07,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:07,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-08-27 11:16:07,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,041 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 49 flow. Second operand 3 states and 285 transitions. [2023-08-27 11:16:07,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 95 flow [2023-08-27 11:16:07,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:16:07,044 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 57 flow [2023-08-27 11:16:07,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-08-27 11:16:07,048 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-27 11:16:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 57 flow [2023-08-27 11:16:07,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:07,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:16:07,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:16:07,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:07,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1340451039, now seen corresponding path program 1 times [2023-08-27 11:16:07,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:07,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641524731] [2023-08-27 11:16:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641524731] [2023-08-27 11:16:07,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641524731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:07,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:07,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:16:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458941553] [2023-08-27 11:16:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:16:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:16:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:16:07,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 172 [2023-08-27 11:16:07,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:07,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 172 [2023-08-27 11:16:07,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:07,200 INFO L124 PetriNetUnfolderBase]: 73/185 cut-off events. [2023-08-27 11:16:07,200 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:16:07,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 185 events. 73/185 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 644 event pairs, 35 based on Foata normal form. 5/190 useless extension candidates. Maximal degree in co-relation 400. Up to 132 conditions per place. [2023-08-27 11:16:07,203 INFO L140 encePairwiseOnDemand]: 164/172 looper letters, 27 selfloop transitions, 6 changer transitions 4/37 dead transitions. [2023-08-27 11:16:07,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 171 flow [2023-08-27 11:16:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:16:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:16:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-08-27 11:16:07,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2023-08-27 11:16:07,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-08-27 11:16:07,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-08-27 11:16:07,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:07,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-08-27 11:16:07,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,210 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 57 flow. Second operand 3 states and 249 transitions. [2023-08-27 11:16:07,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 171 flow [2023-08-27 11:16:07,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:16:07,212 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 85 flow [2023-08-27 11:16:07,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-08-27 11:16:07,213 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-27 11:16:07,213 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 85 flow [2023-08-27 11:16:07,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:07,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:16:07,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:16:07,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:07,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2003550647, now seen corresponding path program 1 times [2023-08-27 11:16:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:07,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407895403] [2023-08-27 11:16:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407895403] [2023-08-27 11:16:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407895403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:16:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262758901] [2023-08-27 11:16:07,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:07,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:16:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:16:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:16:07,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 172 [2023-08-27 11:16:07,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:07,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 172 [2023-08-27 11:16:07,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:07,513 INFO L124 PetriNetUnfolderBase]: 32/108 cut-off events. [2023-08-27 11:16:07,513 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-27 11:16:07,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 108 events. 32/108 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 327 event pairs, 11 based on Foata normal form. 21/129 useless extension candidates. Maximal degree in co-relation 274. Up to 71 conditions per place. [2023-08-27 11:16:07,514 INFO L140 encePairwiseOnDemand]: 164/172 looper letters, 13 selfloop transitions, 8 changer transitions 7/28 dead transitions. [2023-08-27 11:16:07,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 153 flow [2023-08-27 11:16:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:16:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:16:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2023-08-27 11:16:07,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808139534883721 [2023-08-27 11:16:07,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 262 transitions. [2023-08-27 11:16:07,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 262 transitions. [2023-08-27 11:16:07,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:07,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 262 transitions. [2023-08-27 11:16:07,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,518 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,518 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 85 flow. Second operand 4 states and 262 transitions. [2023-08-27 11:16:07,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 153 flow [2023-08-27 11:16:07,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 145 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:16:07,520 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 74 flow [2023-08-27 11:16:07,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-08-27 11:16:07,521 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-27 11:16:07,523 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 74 flow [2023-08-27 11:16:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:07,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:16:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:16:07,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:07,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1787000969, now seen corresponding path program 2 times [2023-08-27 11:16:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:07,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821352260] [2023-08-27 11:16:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:07,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:07,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821352260] [2023-08-27 11:16:07,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821352260] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:07,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:07,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:16:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690846650] [2023-08-27 11:16:07,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:07,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:16:07,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:16:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:16:07,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 172 [2023-08-27 11:16:07,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:07,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 172 [2023-08-27 11:16:07,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:07,665 INFO L124 PetriNetUnfolderBase]: 17/59 cut-off events. [2023-08-27 11:16:07,665 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-27 11:16:07,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 59 events. 17/59 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 7 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 160. Up to 41 conditions per place. [2023-08-27 11:16:07,667 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 15 selfloop transitions, 4 changer transitions 2/21 dead transitions. [2023-08-27 11:16:07,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 124 flow [2023-08-27 11:16:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:16:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:16:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-27 11:16:07,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40261627906976744 [2023-08-27 11:16:07,668 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-27 11:16:07,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-27 11:16:07,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:07,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-27 11:16:07,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,670 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 74 flow. Second operand 4 states and 277 transitions. [2023-08-27 11:16:07,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 124 flow [2023-08-27 11:16:07,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:16:07,671 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 70 flow [2023-08-27 11:16:07,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-27 11:16:07,672 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-27 11:16:07,673 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 70 flow [2023-08-27 11:16:07,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:07,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:16:07,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:16:07,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:07,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:07,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1574706352, now seen corresponding path program 1 times [2023-08-27 11:16:07,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:07,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559914136] [2023-08-27 11:16:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:07,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:07,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:07,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559914136] [2023-08-27 11:16:07,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559914136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:07,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:07,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:16:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754099896] [2023-08-27 11:16:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:07,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:16:07,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:07,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:16:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:16:07,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 172 [2023-08-27 11:16:07,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:07,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 172 [2023-08-27 11:16:07,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:07,875 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2023-08-27 11:16:07,875 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-27 11:16:07,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 36 events. 7/36 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 10/46 useless extension candidates. Maximal degree in co-relation 99. Up to 29 conditions per place. [2023-08-27 11:16:07,876 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-27 11:16:07,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 130 flow [2023-08-27 11:16:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:16:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:16:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-08-27 11:16:07,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36773255813953487 [2023-08-27 11:16:07,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-08-27 11:16:07,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-08-27 11:16:07,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:07,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-08-27 11:16:07,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,881 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 70 flow. Second operand 4 states and 253 transitions. [2023-08-27 11:16:07,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 130 flow [2023-08-27 11:16:07,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:16:07,882 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-27 11:16:07,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-27 11:16:07,882 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2023-08-27 11:16:07,882 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-27 11:16:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:07,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2023-08-27 11:16:07,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2023-08-27 11:16:07,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 11:16:07,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:16:07,885 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-27 11:16:07,886 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:16:07,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:16:07,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:16:07 BasicIcfg [2023-08-27 11:16:07,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:16:07,889 INFO L158 Benchmark]: Toolchain (without parser) took 4632.44ms. Allocated memory was 419.4MB in the beginning and 562.0MB in the end (delta: 142.6MB). Free memory was 394.3MB in the beginning and 374.8MB in the end (delta: 19.5MB). Peak memory consumption was 162.8MB. Max. memory is 16.0GB. [2023-08-27 11:16:07,889 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 419.4MB. Free memory was 396.6MB in the beginning and 396.3MB in the end (delta: 241.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:16:07,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.79ms. Allocated memory is still 419.4MB. Free memory was 394.3MB in the beginning and 375.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:16:07,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.24ms. Allocated memory is still 419.4MB. Free memory was 374.7MB in the beginning and 373.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:16:07,890 INFO L158 Benchmark]: Boogie Preprocessor took 17.41ms. Allocated memory is still 419.4MB. Free memory was 373.2MB in the beginning and 371.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:16:07,890 INFO L158 Benchmark]: RCFGBuilder took 421.71ms. Allocated memory is still 419.4MB. Free memory was 371.2MB in the beginning and 356.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 11:16:07,890 INFO L158 Benchmark]: TraceAbstraction took 3813.91ms. Allocated memory was 419.4MB in the beginning and 562.0MB in the end (delta: 142.6MB). Free memory was 355.9MB in the beginning and 374.8MB in the end (delta: -18.9MB). Peak memory consumption was 125.0MB. Max. memory is 16.0GB. [2023-08-27 11:16:07,891 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 419.4MB. Free memory was 396.6MB in the beginning and 396.3MB in the end (delta: 241.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 343.79ms. Allocated memory is still 419.4MB. Free memory was 394.3MB in the beginning and 375.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.24ms. Allocated memory is still 419.4MB. Free memory was 374.7MB in the beginning and 373.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.41ms. Allocated memory is still 419.4MB. Free memory was 373.2MB in the beginning and 371.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 421.71ms. Allocated memory is still 419.4MB. Free memory was 371.2MB in the beginning and 356.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3813.91ms. Allocated memory was 419.4MB in the beginning and 562.0MB in the end (delta: 142.6MB). Free memory was 355.9MB in the beginning and 374.8MB in the end (delta: -18.9MB). Peak memory consumption was 125.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 86 PlacesBefore, 26 PlacesAfterwards, 84 TransitionsBefore, 23 TransitionsAfterwards, 1054 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 3337 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1185, independent: 971, independent conditional: 0, independent unconditional: 971, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 536, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1185, independent: 473, independent conditional: 0, independent unconditional: 473, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 536, unknown conditional: 0, unknown unconditional: 536] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 116 locations, 3 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: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 6 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 11:16:07,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...