/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_fibonacci.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:53:00,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:53:00,150 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:53:00,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:53:00,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:53:00,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:53:00,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:53:00,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:53:00,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:53:00,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:53:00,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:53:00,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:53:00,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:53:00,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:53:00,176 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:53:00,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:53:00,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:53:00,177 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:53:00,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:53:00,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:53:00,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:53:00,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:53:00,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:53:00,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:53:00,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:53:00,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:53:00,179 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:53:00,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:53:00,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:53:00,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:53:00,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:53:00,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:53:00,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:53:00,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:53:00,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:53:00,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:53:00,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:53:00,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:53:00,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:53:00,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:53:00,182 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:53:00,183 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:53:00,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:53:00,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:53:00,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:53:00,375 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:53:00,376 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:53:00,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_fibonacci.wvr_bound2.c [2023-08-03 19:53:01,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:53:01,649 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:53:01,649 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_fibonacci.wvr_bound2.c [2023-08-03 19:53:01,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57d37e52c/05fbf62e569849edbfd8ebdea096b346/FLAG00c9c8ef5 [2023-08-03 19:53:01,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57d37e52c/05fbf62e569849edbfd8ebdea096b346 [2023-08-03 19:53:01,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:53:01,674 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:53:01,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:53:01,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:53:01,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:53:01,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:53:01" (1/1) ... [2023-08-03 19:53:01,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abc9a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:01, skipping insertion in model container [2023-08-03 19:53:01,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:53:01" (1/1) ... [2023-08-03 19:53:01,710 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:53:01,921 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_fibonacci.wvr_bound2.c[2492,2505] [2023-08-03 19:53:01,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:53:01,941 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:53:01,980 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_fibonacci.wvr_bound2.c[2492,2505] [2023-08-03 19:53:01,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:53:02,001 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:53:02,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02 WrapperNode [2023-08-03 19:53:02,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:53:02,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:53:02,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:53:02,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:53:02,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,065 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 201 [2023-08-03 19:53:02,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:53:02,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:53:02,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:53:02,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:53:02,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:53:02,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:53:02,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:53:02,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:53:02,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (1/1) ... [2023-08-03 19:53:02,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:53:02,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:02,139 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) [2023-08-03 19:53:02,141 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 [2023-08-03 19:53:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:53:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:53:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:53:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:53:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:53:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:53:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:53:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:53:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:53:02,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:53:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:53:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:53:02,170 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:53:02,260 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:53:02,262 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:53:02,609 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:53:02,617 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:53:02,617 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:53:02,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:53:02 BoogieIcfgContainer [2023-08-03 19:53:02,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:53:02,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:53:02,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:53:02,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:53:02,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:53:01" (1/3) ... [2023-08-03 19:53:02,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4a5645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:53:02, skipping insertion in model container [2023-08-03 19:53:02,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:53:02" (2/3) ... [2023-08-03 19:53:02,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4a5645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:53:02, skipping insertion in model container [2023-08-03 19:53:02,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:53:02" (3/3) ... [2023-08-03 19:53:02,626 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_fibonacci.wvr_bound2.c [2023-08-03 19:53:02,634 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:53:02,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:53:02,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:53:02,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:53:02,713 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:53:02,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 226 transitions, 474 flow [2023-08-03 19:53:02,895 INFO L124 PetriNetUnfolderBase]: 45/410 cut-off events. [2023-08-03 19:53:02,895 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:53:02,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 410 events. 45/410 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1519 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-08-03 19:53:02,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 226 transitions, 474 flow [2023-08-03 19:53:02,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 226 transitions, 474 flow [2023-08-03 19:53:02,913 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:53:02,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 226 transitions, 474 flow [2023-08-03 19:53:02,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 226 transitions, 474 flow [2023-08-03 19:53:02,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 226 transitions, 474 flow [2023-08-03 19:53:02,982 INFO L124 PetriNetUnfolderBase]: 45/410 cut-off events. [2023-08-03 19:53:02,982 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:53:02,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 410 events. 45/410 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1519 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-08-03 19:53:03,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 17712 [2023-08-03 19:53:08,463 INFO L134 LiptonReduction]: Checked pairs total: 16695 [2023-08-03 19:53:08,464 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-03 19:53:08,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:53:08,482 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=true, 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;@53b82642, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:53:08,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:53:08,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:53:08,486 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-03 19:53:08,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:53:08,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:08,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:53:08,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:08,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash 881440194, now seen corresponding path program 1 times [2023-08-03 19:53:08,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30205451] [2023-08-03 19:53:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:53:08,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30205451] [2023-08-03 19:53:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30205451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:08,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:53:08,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:53:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399246727] [2023-08-03 19:53:08,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:53:08,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:53:08,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:53:08,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 467 [2023-08-03 19:53:08,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 30 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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) [2023-08-03 19:53:08,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:08,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 467 [2023-08-03 19:53:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:08,826 INFO L124 PetriNetUnfolderBase]: 260/420 cut-off events. [2023-08-03 19:53:08,827 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-03 19:53:08,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 420 events. 260/420 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1591 event pairs, 86 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 692. Up to 390 conditions per place. [2023-08-03 19:53:08,830 INFO L140 encePairwiseOnDemand]: 463/467 looper letters, 24 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-03 19:53:08,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 138 flow [2023-08-03 19:53:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:53:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:53:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-03 19:53:08,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44610992148465384 [2023-08-03 19:53:08,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-03 19:53:08,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-03 19:53:08,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:08,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-03 19:53:08,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:08,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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) [2023-08-03 19:53:08,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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) [2023-08-03 19:53:08,861 INFO L175 Difference]: Start difference. First operand has 29 places, 30 transitions, 82 flow. Second operand 3 states and 625 transitions. [2023-08-03 19:53:08,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 138 flow [2023-08-03 19:53:08,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 138 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:53:08,865 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 88 flow [2023-08-03 19:53:08,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-08-03 19:53:08,870 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-03 19:53:08,870 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 88 flow [2023-08-03 19:53:08,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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) [2023-08-03 19:53:08,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:08,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:53:08,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:53:08,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:08,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:08,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1599642447, now seen corresponding path program 1 times [2023-08-03 19:53:08,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:08,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035833772] [2023-08-03 19:53:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:53:08,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:53:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:53:08,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:53:08,929 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:53:08,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:53:08,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:53:08,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:53:08,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:53:08,935 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 19:53:08,938 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:53:08,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:53:08,998 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:53:09,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 340 transitions, 728 flow [2023-08-03 19:53:09,253 INFO L124 PetriNetUnfolderBase]: 166/1205 cut-off events. [2023-08-03 19:53:09,253 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:53:09,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 1205 events. 166/1205 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7274 event pairs, 2 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 731. Up to 32 conditions per place. [2023-08-03 19:53:09,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 340 transitions, 728 flow [2023-08-03 19:53:09,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 340 transitions, 728 flow [2023-08-03 19:53:09,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:53:09,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 340 transitions, 728 flow [2023-08-03 19:53:09,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 340 transitions, 728 flow [2023-08-03 19:53:09,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 340 transitions, 728 flow [2023-08-03 19:53:09,502 INFO L124 PetriNetUnfolderBase]: 166/1205 cut-off events. [2023-08-03 19:53:09,503 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:53:09,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 1205 events. 166/1205 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7274 event pairs, 2 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 731. Up to 32 conditions per place. [2023-08-03 19:53:09,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 60912 [2023-08-03 19:53:15,540 INFO L134 LiptonReduction]: Checked pairs total: 69276 [2023-08-03 19:53:15,540 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-08-03 19:53:15,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:53:15,543 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=true, 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;@53b82642, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:53:15,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:53:15,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:53:15,545 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 19:53:15,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:53:15,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:15,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 19:53:15,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:15,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1651597067, now seen corresponding path program 1 times [2023-08-03 19:53:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842676049] [2023-08-03 19:53:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:53:15,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842676049] [2023-08-03 19:53:15,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842676049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:15,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:53:15,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:53:15,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551408947] [2023-08-03 19:53:15,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:15,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:53:15,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:53:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:53:15,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 698 [2023-08-03 19:53:15,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 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) [2023-08-03 19:53:15,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:15,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 698 [2023-08-03 19:53:15,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:22,843 INFO L124 PetriNetUnfolderBase]: 78386/99695 cut-off events. [2023-08-03 19:53:22,843 INFO L125 PetriNetUnfolderBase]: For 6877/6877 co-relation queries the response was YES. [2023-08-03 19:53:23,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201548 conditions, 99695 events. 78386/99695 cut-off events. For 6877/6877 co-relation queries the response was YES. Maximal size of possible extension queue 3071. Compared 547687 event pairs, 42621 based on Foata normal form. 0/70797 useless extension candidates. Maximal degree in co-relation 56804. Up to 97938 conditions per place. [2023-08-03 19:53:23,494 INFO L140 encePairwiseOnDemand]: 692/698 looper letters, 50 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 19:53:23,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 276 flow [2023-08-03 19:53:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:53:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:53:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-03 19:53:23,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45272206303724927 [2023-08-03 19:53:23,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-03 19:53:23,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-03 19:53:23,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:23,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-03 19:53:23,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2023-08-03 19:53:23,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:53:23,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:53:23,510 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 164 flow. Second operand 3 states and 948 transitions. [2023-08-03 19:53:23,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 276 flow [2023-08-03 19:53:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:53:23,516 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 170 flow [2023-08-03 19:53:23,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-08-03 19:53:23,517 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-03 19:53:23,518 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 170 flow [2023-08-03 19:53:23,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 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) [2023-08-03 19:53:23,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:23,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:53:23,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:23,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 278160413, now seen corresponding path program 1 times [2023-08-03 19:53:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317080137] [2023-08-03 19:53:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:53:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:23,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317080137] [2023-08-03 19:53:23,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317080137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:23,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541746331] [2023-08-03 19:53:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:23,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:23,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:23,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:23,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:53:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:23,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:53:23,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:53:23,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541746331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:23,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:53:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:53:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530581039] [2023-08-03 19:53:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:53:23,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:53:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:53:23,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 698 [2023-08-03 19:53:23,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 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) [2023-08-03 19:53:23,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 698 [2023-08-03 19:53:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:30,510 INFO L124 PetriNetUnfolderBase]: 77847/99764 cut-off events. [2023-08-03 19:53:30,511 INFO L125 PetriNetUnfolderBase]: For 6478/6478 co-relation queries the response was YES. [2023-08-03 19:53:30,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201198 conditions, 99764 events. 77847/99764 cut-off events. For 6478/6478 co-relation queries the response was YES. Maximal size of possible extension queue 3087. Compared 564050 event pairs, 42245 based on Foata normal form. 0/71016 useless extension candidates. Maximal degree in co-relation 121414. Up to 96337 conditions per place. [2023-08-03 19:53:31,106 INFO L140 encePairwiseOnDemand]: 695/698 looper letters, 61 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-03 19:53:31,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 330 flow [2023-08-03 19:53:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:53:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:53:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 954 transitions. [2023-08-03 19:53:31,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45558739255014324 [2023-08-03 19:53:31,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 954 transitions. [2023-08-03 19:53:31,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 954 transitions. [2023-08-03 19:53:31,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:31,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 954 transitions. [2023-08-03 19:53:31,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 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) [2023-08-03 19:53:31,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:53:31,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:53:31,117 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 170 flow. Second operand 3 states and 954 transitions. [2023-08-03 19:53:31,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 330 flow [2023-08-03 19:53:31,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:53:31,123 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 180 flow [2023-08-03 19:53:31,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-08-03 19:53:31,124 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-08-03 19:53:31,124 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 180 flow [2023-08-03 19:53:31,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 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) [2023-08-03 19:53:31,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:31,125 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:53:31,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:53:31,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:31,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:31,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:31,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2071756813, now seen corresponding path program 1 times [2023-08-03 19:53:31,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:31,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753757782] [2023-08-03 19:53:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:31,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:53:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753757782] [2023-08-03 19:53:31,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753757782] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163770218] [2023-08-03 19:53:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:31,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:31,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:31,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:53:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:31,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:53:31,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:53:31,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163770218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:31,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:53:31,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:53:31,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944673032] [2023-08-03 19:53:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:31,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:53:31,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:53:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:53:31,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 698 [2023-08-03 19:53:31,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 297.6) internal successors, (1488), 5 states have internal predecessors, (1488), 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) [2023-08-03 19:53:31,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:31,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 698 [2023-08-03 19:53:31,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:38,061 INFO L124 PetriNetUnfolderBase]: 78122/99997 cut-off events. [2023-08-03 19:53:38,061 INFO L125 PetriNetUnfolderBase]: For 9435/9435 co-relation queries the response was YES. [2023-08-03 19:53:38,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205199 conditions, 99997 events. 78122/99997 cut-off events. For 9435/9435 co-relation queries the response was YES. Maximal size of possible extension queue 3112. Compared 558464 event pairs, 28445 based on Foata normal form. 36/73029 useless extension candidates. Maximal degree in co-relation 57665. Up to 97506 conditions per place. [2023-08-03 19:53:38,724 INFO L140 encePairwiseOnDemand]: 694/698 looper letters, 60 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-08-03 19:53:38,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 341 flow [2023-08-03 19:53:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:53:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:53:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1544 transitions. [2023-08-03 19:53:38,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44240687679083096 [2023-08-03 19:53:38,730 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1544 transitions. [2023-08-03 19:53:38,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1544 transitions. [2023-08-03 19:53:38,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:38,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1544 transitions. [2023-08-03 19:53:38,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 308.8) internal successors, (1544), 5 states have internal predecessors, (1544), 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) [2023-08-03 19:53:38,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 19:53:38,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 19:53:38,743 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 180 flow. Second operand 5 states and 1544 transitions. [2023-08-03 19:53:38,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 341 flow [2023-08-03 19:53:38,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:53:38,754 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 189 flow [2023-08-03 19:53:38,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-08-03 19:53:38,755 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-08-03 19:53:38,756 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 189 flow [2023-08-03 19:53:38,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.6) internal successors, (1488), 5 states have internal predecessors, (1488), 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) [2023-08-03 19:53:38,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:38,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:38,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:53:38,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:38,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:38,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1341187314, now seen corresponding path program 1 times [2023-08-03 19:53:38,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:38,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551481486] [2023-08-03 19:53:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:53:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551481486] [2023-08-03 19:53:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551481486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196825564] [2023-08-03 19:53:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:39,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:39,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:39,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:53:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:39,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:53:39,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:53:39,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:39,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196825564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:39,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:53:39,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:53:39,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422570637] [2023-08-03 19:53:39,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:39,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:53:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:39,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:53:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:53:39,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 698 [2023-08-03 19:53:39,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 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) [2023-08-03 19:53:39,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:39,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 698 [2023-08-03 19:53:39,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:44,201 INFO L124 PetriNetUnfolderBase]: 59415/77377 cut-off events. [2023-08-03 19:53:44,202 INFO L125 PetriNetUnfolderBase]: For 5914/5914 co-relation queries the response was YES. [2023-08-03 19:53:44,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159039 conditions, 77377 events. 59415/77377 cut-off events. For 5914/5914 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 446913 event pairs, 27933 based on Foata normal form. 0/58084 useless extension candidates. Maximal degree in co-relation 65038. Up to 51912 conditions per place. [2023-08-03 19:53:44,639 INFO L140 encePairwiseOnDemand]: 695/698 looper letters, 72 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-03 19:53:44,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 399 flow [2023-08-03 19:53:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:53:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:53:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2023-08-03 19:53:44,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45988538681948427 [2023-08-03 19:53:44,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 963 transitions. [2023-08-03 19:53:44,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 963 transitions. [2023-08-03 19:53:44,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:44,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 963 transitions. [2023-08-03 19:53:44,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 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) [2023-08-03 19:53:44,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:53:44,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:53:44,652 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 189 flow. Second operand 3 states and 963 transitions. [2023-08-03 19:53:44,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 399 flow [2023-08-03 19:53:44,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 392 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:53:44,659 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 194 flow [2023-08-03 19:53:44,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-03 19:53:44,662 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-08-03 19:53:44,663 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 194 flow [2023-08-03 19:53:44,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 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) [2023-08-03 19:53:44,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:44,664 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:44,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:53:44,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:44,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:44,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:44,869 INFO L85 PathProgramCache]: Analyzing trace with hash 637797407, now seen corresponding path program 1 times [2023-08-03 19:53:44,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:44,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822297778] [2023-08-03 19:53:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:53:44,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822297778] [2023-08-03 19:53:44,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822297778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438888789] [2023-08-03 19:53:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:44,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:44,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:44,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:44,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:53:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:45,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:53:45,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:53:45,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:53:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:53:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438888789] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:53:45,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:53:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:53:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851048303] [2023-08-03 19:53:45,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:53:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:53:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:53:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:53:45,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 698 [2023-08-03 19:53:45,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 298.6) internal successors, (1493), 5 states have internal predecessors, (1493), 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) [2023-08-03 19:53:45,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:45,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 698 [2023-08-03 19:53:45,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:49,492 INFO L124 PetriNetUnfolderBase]: 55169/71319 cut-off events. [2023-08-03 19:53:49,493 INFO L125 PetriNetUnfolderBase]: For 14084/14084 co-relation queries the response was YES. [2023-08-03 19:53:49,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151364 conditions, 71319 events. 55169/71319 cut-off events. For 14084/14084 co-relation queries the response was YES. Maximal size of possible extension queue 2213. Compared 395582 event pairs, 19993 based on Foata normal form. 6/54296 useless extension candidates. Maximal degree in co-relation 49207. Up to 69584 conditions per place. [2023-08-03 19:53:49,935 INFO L140 encePairwiseOnDemand]: 695/698 looper letters, 61 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 19:53:49,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 348 flow [2023-08-03 19:53:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:53:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:53:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2023-08-03 19:53:49,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466332378223496 [2023-08-03 19:53:49,939 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2023-08-03 19:53:49,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2023-08-03 19:53:49,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:49,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2023-08-03 19:53:49,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 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) [2023-08-03 19:53:49,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:53:49,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:53:49,948 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 194 flow. Second operand 4 states and 1247 transitions. [2023-08-03 19:53:49,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 348 flow [2023-08-03 19:53:50,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:53:50,119 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 190 flow [2023-08-03 19:53:50,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-03 19:53:50,120 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2023-08-03 19:53:50,120 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 190 flow [2023-08-03 19:53:50,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 298.6) internal successors, (1493), 5 states have internal predecessors, (1493), 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) [2023-08-03 19:53:50,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:50,121 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:50,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:53:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:50,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:50,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash 949438828, now seen corresponding path program 1 times [2023-08-03 19:53:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52374522] [2023-08-03 19:53:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:53:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52374522] [2023-08-03 19:53:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52374522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694198505] [2023-08-03 19:53:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:50,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:50,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:50,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:53:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:50,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:53:50,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:53:50,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694198505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:50,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:53:50,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:53:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705161695] [2023-08-03 19:53:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:53:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:53:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:53:50,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 698 [2023-08-03 19:53:50,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 298.6) internal successors, (1493), 5 states have internal predecessors, (1493), 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) [2023-08-03 19:53:50,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:50,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 698 [2023-08-03 19:53:50,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:54,714 INFO L124 PetriNetUnfolderBase]: 48907/63875 cut-off events. [2023-08-03 19:53:54,714 INFO L125 PetriNetUnfolderBase]: For 5751/5751 co-relation queries the response was YES. [2023-08-03 19:53:54,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135061 conditions, 63875 events. 48907/63875 cut-off events. For 5751/5751 co-relation queries the response was YES. Maximal size of possible extension queue 1964. Compared 364740 event pairs, 1617 based on Foata normal form. 1296/50053 useless extension candidates. Maximal degree in co-relation 59147. Up to 53778 conditions per place. [2023-08-03 19:53:55,064 INFO L140 encePairwiseOnDemand]: 694/698 looper letters, 91 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-03 19:53:55,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 472 flow [2023-08-03 19:53:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:53:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:53:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1574 transitions. [2023-08-03 19:53:55,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510028653295129 [2023-08-03 19:53:55,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1574 transitions. [2023-08-03 19:53:55,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1574 transitions. [2023-08-03 19:53:55,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:55,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1574 transitions. [2023-08-03 19:53:55,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.8) internal successors, (1574), 5 states have internal predecessors, (1574), 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) [2023-08-03 19:53:55,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 19:53:55,078 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 19:53:55,078 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 190 flow. Second operand 5 states and 1574 transitions. [2023-08-03 19:53:55,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 472 flow [2023-08-03 19:53:55,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 460 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:53:55,332 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 195 flow [2023-08-03 19:53:55,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-03 19:53:55,332 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2023-08-03 19:53:55,332 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 195 flow [2023-08-03 19:53:55,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 298.6) internal successors, (1493), 5 states have internal predecessors, (1493), 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) [2023-08-03 19:53:55,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:55,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:53:55,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:53:55,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:55,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:55,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash -731320771, now seen corresponding path program 1 times [2023-08-03 19:53:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157231677] [2023-08-03 19:53:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:53:55,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:55,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157231677] [2023-08-03 19:53:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157231677] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:55,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972651736] [2023-08-03 19:53:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:55,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:55,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:55,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:55,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:53:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:55,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:53:55,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:53:55,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:53:55,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972651736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:53:55,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:53:55,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:53:55,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617184035] [2023-08-03 19:53:55,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:53:55,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:53:55,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:53:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:53:55,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 698 [2023-08-03 19:53:55,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 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) [2023-08-03 19:53:55,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:55,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 698 [2023-08-03 19:53:55,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:59,777 INFO L124 PetriNetUnfolderBase]: 47033/61409 cut-off events. [2023-08-03 19:53:59,778 INFO L125 PetriNetUnfolderBase]: For 20216/20216 co-relation queries the response was YES. [2023-08-03 19:53:59,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134269 conditions, 61409 events. 47033/61409 cut-off events. For 20216/20216 co-relation queries the response was YES. Maximal size of possible extension queue 1846. Compared 345421 event pairs, 27526 based on Foata normal form. 0/47507 useless extension candidates. Maximal degree in co-relation 58964. Up to 49543 conditions per place. [2023-08-03 19:54:00,087 INFO L140 encePairwiseOnDemand]: 695/698 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-03 19:54:00,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 83 transitions, 405 flow [2023-08-03 19:54:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:54:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:54:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2023-08-03 19:54:00,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45988538681948427 [2023-08-03 19:54:00,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 963 transitions. [2023-08-03 19:54:00,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 963 transitions. [2023-08-03 19:54:00,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:00,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 963 transitions. [2023-08-03 19:54:00,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 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) [2023-08-03 19:54:00,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:54:00,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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) [2023-08-03 19:54:00,097 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 195 flow. Second operand 3 states and 963 transitions. [2023-08-03 19:54:00,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 83 transitions, 405 flow [2023-08-03 19:54:00,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 398 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:54:00,192 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 200 flow [2023-08-03 19:54:00,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-03 19:54:00,193 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-03 19:54:00,193 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 200 flow [2023-08-03 19:54:00,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 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) [2023-08-03 19:54:00,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:00,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:00,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:00,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:00,394 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:00,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2079187484, now seen corresponding path program 1 times [2023-08-03 19:54:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:00,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379212820] [2023-08-03 19:54:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:54:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379212820] [2023-08-03 19:54:00,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379212820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:54:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198179126] [2023-08-03 19:54:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:00,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:00,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:00,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:54:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:00,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:54:00,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:54:00,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:54:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198179126] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:00,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:54:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:54:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522432596] [2023-08-03 19:54:00,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:54:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:54:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:54:00,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 698 [2023-08-03 19:54:00,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 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) [2023-08-03 19:54:00,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:00,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 698 [2023-08-03 19:54:00,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:04,533 INFO L124 PetriNetUnfolderBase]: 44938/58926 cut-off events. [2023-08-03 19:54:04,533 INFO L125 PetriNetUnfolderBase]: For 13903/13903 co-relation queries the response was YES. [2023-08-03 19:54:04,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128647 conditions, 58926 events. 44938/58926 cut-off events. For 13903/13903 co-relation queries the response was YES. Maximal size of possible extension queue 1798. Compared 337969 event pairs, 15202 based on Foata normal form. 216/46071 useless extension candidates. Maximal degree in co-relation 99498. Up to 49140 conditions per place. [2023-08-03 19:54:04,865 INFO L140 encePairwiseOnDemand]: 695/698 looper letters, 82 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-03 19:54:04,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 436 flow [2023-08-03 19:54:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1267 transitions. [2023-08-03 19:54:04,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45379656160458454 [2023-08-03 19:54:04,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1267 transitions. [2023-08-03 19:54:04,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1267 transitions. [2023-08-03 19:54:04,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:04,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1267 transitions. [2023-08-03 19:54:04,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 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) [2023-08-03 19:54:04,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:54:04,877 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:54:04,877 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 200 flow. Second operand 4 states and 1267 transitions. [2023-08-03 19:54:04,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 436 flow [2023-08-03 19:54:05,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:54:05,628 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 196 flow [2023-08-03 19:54:05,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-08-03 19:54:05,629 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-08-03 19:54:05,629 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 196 flow [2023-08-03 19:54:05,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 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) [2023-08-03 19:54:05,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:05,630 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:05,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:05,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:05,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:05,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash -648697128, now seen corresponding path program 1 times [2023-08-03 19:54:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:05,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199867094] [2023-08-03 19:54:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:54:05,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199867094] [2023-08-03 19:54:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199867094] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:54:05,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003544982] [2023-08-03 19:54:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:05,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:05,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:05,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:54:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:05,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:54:05,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:54:06,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:54:06,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003544982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:06,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:54:06,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:54:06,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326896277] [2023-08-03 19:54:06,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:06,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:54:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:54:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:54:06,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 698 [2023-08-03 19:54:06,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 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) [2023-08-03 19:54:06,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:06,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 698 [2023-08-03 19:54:06,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:09,284 INFO L124 PetriNetUnfolderBase]: 36781/47985 cut-off events. [2023-08-03 19:54:09,284 INFO L125 PetriNetUnfolderBase]: For 17810/17810 co-relation queries the response was YES. [2023-08-03 19:54:09,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105756 conditions, 47985 events. 36781/47985 cut-off events. For 17810/17810 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 262736 event pairs, 9845 based on Foata normal form. 864/38082 useless extension candidates. Maximal degree in co-relation 101516. Up to 18576 conditions per place. [2023-08-03 19:54:09,550 INFO L140 encePairwiseOnDemand]: 694/698 looper letters, 91 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-03 19:54:09,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 486 flow [2023-08-03 19:54:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1277 transitions. [2023-08-03 19:54:09,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457378223495702 [2023-08-03 19:54:09,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1277 transitions. [2023-08-03 19:54:09,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1277 transitions. [2023-08-03 19:54:09,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:09,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1277 transitions. [2023-08-03 19:54:09,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.25) internal successors, (1277), 4 states have internal predecessors, (1277), 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) [2023-08-03 19:54:09,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:54:09,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:54:09,562 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 196 flow. Second operand 4 states and 1277 transitions. [2023-08-03 19:54:09,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 486 flow [2023-08-03 19:54:09,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 103 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:54:09,671 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 210 flow [2023-08-03 19:54:09,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-08-03 19:54:09,672 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2023-08-03 19:54:09,672 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 210 flow [2023-08-03 19:54:09,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 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) [2023-08-03 19:54:09,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:09,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:09,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:09,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 19:54:09,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:09,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash -559583068, now seen corresponding path program 1 times [2023-08-03 19:54:09,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:09,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486042406] [2023-08-03 19:54:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:09,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:54:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486042406] [2023-08-03 19:54:09,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486042406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:54:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969996197] [2023-08-03 19:54:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:09,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:09,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:09,952 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:09,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:54:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:10,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:54:10,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:54:10,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:54:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969996197] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:10,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:54:10,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:54:10,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757587417] [2023-08-03 19:54:10,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:10,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:54:10,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:54:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:54:10,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 698 [2023-08-03 19:54:10,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 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) [2023-08-03 19:54:10,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:10,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 698 [2023-08-03 19:54:10,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:13,339 INFO L124 PetriNetUnfolderBase]: 36753/47934 cut-off events. [2023-08-03 19:54:13,339 INFO L125 PetriNetUnfolderBase]: For 24927/24927 co-relation queries the response was YES. [2023-08-03 19:54:13,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111078 conditions, 47934 events. 36753/47934 cut-off events. For 24927/24927 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 260149 event pairs, 25125 based on Foata normal form. 25/37200 useless extension candidates. Maximal degree in co-relation 106722. Up to 44685 conditions per place. [2023-08-03 19:54:13,601 INFO L140 encePairwiseOnDemand]: 694/698 looper letters, 91 selfloop transitions, 3 changer transitions 2/104 dead transitions. [2023-08-03 19:54:13,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 502 flow [2023-08-03 19:54:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:54:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:54:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1277 transitions. [2023-08-03 19:54:13,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457378223495702 [2023-08-03 19:54:13,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1277 transitions. [2023-08-03 19:54:13,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1277 transitions. [2023-08-03 19:54:13,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:13,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1277 transitions. [2023-08-03 19:54:13,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.25) internal successors, (1277), 4 states have internal predecessors, (1277), 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) [2023-08-03 19:54:13,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:54:13,610 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 698.0) internal successors, (3490), 5 states have internal predecessors, (3490), 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) [2023-08-03 19:54:13,611 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 210 flow. Second operand 4 states and 1277 transitions. [2023-08-03 19:54:13,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 502 flow [2023-08-03 19:54:13,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 104 transitions, 498 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:54:13,834 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 214 flow [2023-08-03 19:54:13,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-08-03 19:54:13,834 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-03 19:54:13,834 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 214 flow [2023-08-03 19:54:13,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 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) [2023-08-03 19:54:13,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:13,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:13,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:14,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:14,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:14,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1816460511, now seen corresponding path program 1 times [2023-08-03 19:54:14,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716164433] [2023-08-03 19:54:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:54:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:14,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716164433] [2023-08-03 19:54:14,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716164433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:54:14,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623421409] [2023-08-03 19:54:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:14,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:14,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:14,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:14,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:54:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:14,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-03 19:54:14,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:54:15,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:54:15,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623421409] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:15,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:54:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-08-03 19:54:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230185775] [2023-08-03 19:54:15,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:15,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:54:15,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:54:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:54:15,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 698 [2023-08-03 19:54:15,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 291.42857142857144) internal successors, (2040), 7 states have internal predecessors, (2040), 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) [2023-08-03 19:54:15,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:15,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 698 [2023-08-03 19:54:15,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:20,179 INFO L124 PetriNetUnfolderBase]: 48544/63293 cut-off events. [2023-08-03 19:54:20,179 INFO L125 PetriNetUnfolderBase]: For 39541/39541 co-relation queries the response was YES. [2023-08-03 19:54:20,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149129 conditions, 63293 events. 48544/63293 cut-off events. For 39541/39541 co-relation queries the response was YES. Maximal size of possible extension queue 2075. Compared 370253 event pairs, 8027 based on Foata normal form. 1/49179 useless extension candidates. Maximal degree in co-relation 148225. Up to 48851 conditions per place. [2023-08-03 19:54:20,573 INFO L140 encePairwiseOnDemand]: 688/698 looper letters, 227 selfloop transitions, 31 changer transitions 1/267 dead transitions. [2023-08-03 19:54:20,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 267 transitions, 1577 flow [2023-08-03 19:54:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:54:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:54:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2521 transitions. [2023-08-03 19:54:20,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45146848137535817 [2023-08-03 19:54:20,578 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2521 transitions. [2023-08-03 19:54:20,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2521 transitions. [2023-08-03 19:54:20,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:20,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2521 transitions. [2023-08-03 19:54:20,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 315.125) internal successors, (2521), 8 states have internal predecessors, (2521), 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) [2023-08-03 19:54:20,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 698.0) internal successors, (6282), 9 states have internal predecessors, (6282), 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) [2023-08-03 19:54:20,590 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 698.0) internal successors, (6282), 9 states have internal predecessors, (6282), 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) [2023-08-03 19:54:20,590 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 214 flow. Second operand 8 states and 2521 transitions. [2023-08-03 19:54:20,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 267 transitions, 1577 flow [2023-08-03 19:54:20,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 267 transitions, 1534 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-03 19:54:20,737 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 423 flow [2023-08-03 19:54:20,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2023-08-03 19:54:20,737 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2023-08-03 19:54:20,737 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 423 flow [2023-08-03 19:54:20,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 291.42857142857144) internal successors, (2040), 7 states have internal predecessors, (2040), 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) [2023-08-03 19:54:20,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:20,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:20,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-03 19:54:20,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:54:20,942 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:20,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:20,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1846074491, now seen corresponding path program 1 times [2023-08-03 19:54:20,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:20,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261288388] [2023-08-03 19:54:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:20,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:54:21,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261288388] [2023-08-03 19:54:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261288388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:54:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938389710] [2023-08-03 19:54:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:21,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:21,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:21,619 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:21,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:54:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:21,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-03 19:54:21,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:54:21,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:54:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:54:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938389710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:54:22,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:54:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 15 [2023-08-03 19:54:22,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102988408] [2023-08-03 19:54:22,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:54:22,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 19:54:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 19:54:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-08-03 19:54:22,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 698 [2023-08-03 19:54:22,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 423 flow. Second operand has 16 states, 16 states have (on average 273.25) internal successors, (4372), 16 states have internal predecessors, (4372), 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) [2023-08-03 19:54:22,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:22,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 698 [2023-08-03 19:54:22,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:31,443 INFO L124 PetriNetUnfolderBase]: 53921/72348 cut-off events. [2023-08-03 19:54:31,443 INFO L125 PetriNetUnfolderBase]: For 95154/95154 co-relation queries the response was YES. [2023-08-03 19:54:31,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219344 conditions, 72348 events. 53921/72348 cut-off events. For 95154/95154 co-relation queries the response was YES. Maximal size of possible extension queue 2342. Compared 444216 event pairs, 5937 based on Foata normal form. 82/72417 useless extension candidates. Maximal degree in co-relation 217775. Up to 42718 conditions per place. [2023-08-03 19:54:31,980 INFO L140 encePairwiseOnDemand]: 676/698 looper letters, 585 selfloop transitions, 296 changer transitions 28/915 dead transitions. [2023-08-03 19:54:31,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 915 transitions, 5791 flow [2023-08-03 19:54:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-03 19:54:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-03 19:54:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 12755 transitions. [2023-08-03 19:54:31,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4060808659662528 [2023-08-03 19:54:31,997 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 12755 transitions. [2023-08-03 19:54:31,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 12755 transitions. [2023-08-03 19:54:32,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:32,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 12755 transitions. [2023-08-03 19:54:32,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 283.44444444444446) internal successors, (12755), 45 states have internal predecessors, (12755), 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) [2023-08-03 19:54:32,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 698.0) internal successors, (32108), 46 states have internal predecessors, (32108), 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) [2023-08-03 19:54:32,058 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 698.0) internal successors, (32108), 46 states have internal predecessors, (32108), 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) [2023-08-03 19:54:32,058 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 423 flow. Second operand 45 states and 12755 transitions. [2023-08-03 19:54:32,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 915 transitions, 5791 flow [2023-08-03 19:54:32,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 915 transitions, 5791 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:54:32,762 INFO L231 Difference]: Finished difference. Result has 151 places, 397 transitions, 3383 flow [2023-08-03 19:54:32,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3383, PETRI_PLACES=151, PETRI_TRANSITIONS=397} [2023-08-03 19:54:32,763 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 98 predicate places. [2023-08-03 19:54:32,763 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 397 transitions, 3383 flow [2023-08-03 19:54:32,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 273.25) internal successors, (4372), 16 states have internal predecessors, (4372), 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) [2023-08-03 19:54:32,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:54:32,764 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:54:32,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:54:32,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:54:32,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:54:32,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:54:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash -303498711, now seen corresponding path program 1 times [2023-08-03 19:54:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:54:32,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488876704] [2023-08-03 19:54:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:54:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 19:54:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488876704] [2023-08-03 19:54:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488876704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:54:33,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:54:33,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 19:54:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237336664] [2023-08-03 19:54:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:54:33,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:54:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:54:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:54:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:54:33,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 698 [2023-08-03 19:54:33,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 397 transitions, 3383 flow. Second operand has 5 states, 5 states have (on average 299.6) internal successors, (1498), 5 states have internal predecessors, (1498), 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) [2023-08-03 19:54:33,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:54:33,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 698 [2023-08-03 19:54:33,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:54:48,508 INFO L124 PetriNetUnfolderBase]: 91292/124994 cut-off events. [2023-08-03 19:54:48,508 INFO L125 PetriNetUnfolderBase]: For 777563/777574 co-relation queries the response was YES. [2023-08-03 19:54:49,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504107 conditions, 124994 events. 91292/124994 cut-off events. For 777563/777574 co-relation queries the response was YES. Maximal size of possible extension queue 3736. Compared 854675 event pairs, 38266 based on Foata normal form. 820/125747 useless extension candidates. Maximal degree in co-relation 500900. Up to 52180 conditions per place. [2023-08-03 19:54:50,252 INFO L140 encePairwiseOnDemand]: 693/698 looper letters, 908 selfloop transitions, 22 changer transitions 13/958 dead transitions. [2023-08-03 19:54:50,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 958 transitions, 10077 flow [2023-08-03 19:54:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:54:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:54:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1624 transitions. [2023-08-03 19:54:50,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46532951289398283 [2023-08-03 19:54:50,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1624 transitions. [2023-08-03 19:54:50,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1624 transitions. [2023-08-03 19:54:50,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:54:50,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1624 transitions. [2023-08-03 19:54:50,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.8) internal successors, (1624), 5 states have internal predecessors, (1624), 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) [2023-08-03 19:54:50,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 19:54:50,260 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 19:54:50,260 INFO L175 Difference]: Start difference. First operand has 151 places, 397 transitions, 3383 flow. Second operand 5 states and 1624 transitions. [2023-08-03 19:54:50,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 958 transitions, 10077 flow [2023-08-03 19:55:07,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 958 transitions, 9126 flow, removed 400 selfloop flow, removed 7 redundant places. [2023-08-03 19:55:07,560 INFO L231 Difference]: Finished difference. Result has 151 places, 400 transitions, 3160 flow [2023-08-03 19:55:07,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3160, PETRI_PLACES=151, PETRI_TRANSITIONS=400} [2023-08-03 19:55:07,561 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 98 predicate places. [2023-08-03 19:55:07,561 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 400 transitions, 3160 flow [2023-08-03 19:55:07,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 299.6) internal successors, (1498), 5 states have internal predecessors, (1498), 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) [2023-08-03 19:55:07,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:55:07,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:55:07,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 19:55:07,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:55:07,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:55:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1566661863, now seen corresponding path program 1 times [2023-08-03 19:55:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:55:07,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528408989] [2023-08-03 19:55:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:07,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:55:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:55:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:55:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:55:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528408989] [2023-08-03 19:55:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528408989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:55:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262330664] [2023-08-03 19:55:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:07,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:55:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:55:07,646 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:55:07,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:55:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:55:07,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:55:07,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:55:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:55:07,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:55:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:55:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262330664] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:55:07,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:55:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-08-03 19:55:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85520971] [2023-08-03 19:55:07,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:55:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 19:55:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:55:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 19:55:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:55:07,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 698 [2023-08-03 19:55:07,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 400 transitions, 3160 flow. Second operand has 9 states, 9 states have (on average 296.3333333333333) internal successors, (2667), 9 states have internal predecessors, (2667), 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) [2023-08-03 19:55:07,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:55:07,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 698 [2023-08-03 19:55:07,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:55:30,290 INFO L124 PetriNetUnfolderBase]: 119182/159061 cut-off events. [2023-08-03 19:55:30,291 INFO L125 PetriNetUnfolderBase]: For 1054192/1054211 co-relation queries the response was YES. [2023-08-03 19:55:32,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657781 conditions, 159061 events. 119182/159061 cut-off events. For 1054192/1054211 co-relation queries the response was YES. Maximal size of possible extension queue 4830. Compared 1082743 event pairs, 12524 based on Foata normal form. 1935/160965 useless extension candidates. Maximal degree in co-relation 654417. Up to 28294 conditions per place. [2023-08-03 19:55:32,748 INFO L140 encePairwiseOnDemand]: 691/698 looper letters, 1365 selfloop transitions, 19 changer transitions 0/1399 dead transitions. [2023-08-03 19:55:32,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1399 transitions, 13120 flow [2023-08-03 19:55:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 19:55:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 19:55:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3544 transitions. [2023-08-03 19:55:32,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4615785360771034 [2023-08-03 19:55:32,752 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3544 transitions. [2023-08-03 19:55:32,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3544 transitions. [2023-08-03 19:55:32,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:55:32,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3544 transitions. [2023-08-03 19:55:32,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 322.1818181818182) internal successors, (3544), 11 states have internal predecessors, (3544), 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) [2023-08-03 19:55:32,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 698.0) internal successors, (8376), 12 states have internal predecessors, (8376), 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) [2023-08-03 19:55:32,760 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 698.0) internal successors, (8376), 12 states have internal predecessors, (8376), 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) [2023-08-03 19:55:32,760 INFO L175 Difference]: Start difference. First operand has 151 places, 400 transitions, 3160 flow. Second operand 11 states and 3544 transitions. [2023-08-03 19:55:32,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1399 transitions, 13120 flow [2023-08-03 19:55:58,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1399 transitions, 13115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:55:58,198 INFO L231 Difference]: Finished difference. Result has 166 places, 417 transitions, 3307 flow [2023-08-03 19:55:58,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=3158, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3307, PETRI_PLACES=166, PETRI_TRANSITIONS=417} [2023-08-03 19:55:58,199 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 113 predicate places. [2023-08-03 19:55:58,199 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 417 transitions, 3307 flow [2023-08-03 19:55:58,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 296.3333333333333) internal successors, (2667), 9 states have internal predecessors, (2667), 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) [2023-08-03 19:55:58,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:55:58,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:55:58,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:55:58,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 19:55:58,400 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:55:58,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:55:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash 311627837, now seen corresponding path program 1 times [2023-08-03 19:55:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:55:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789383325] [2023-08-03 19:55:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:55:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:55:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:55:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:55:58,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:55:58,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789383325] [2023-08-03 19:55:58,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789383325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:55:58,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:55:58,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 19:55:58,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826248812] [2023-08-03 19:55:58,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:55:58,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:55:58,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:55:58,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:55:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:55:58,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 698 [2023-08-03 19:55:58,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 417 transitions, 3307 flow. Second operand has 5 states, 5 states have (on average 298.4) internal successors, (1492), 5 states have internal predecessors, (1492), 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) [2023-08-03 19:55:58,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:55:58,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 698 [2023-08-03 19:55:58,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:56:36,539 INFO L124 PetriNetUnfolderBase]: 208742/281263 cut-off events. [2023-08-03 19:56:36,539 INFO L125 PetriNetUnfolderBase]: For 2133683/2133694 co-relation queries the response was YES. [2023-08-03 19:56:39,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235050 conditions, 281263 events. 208742/281263 cut-off events. For 2133683/2133694 co-relation queries the response was YES. Maximal size of possible extension queue 8030. Compared 2027710 event pairs, 71114 based on Foata normal form. 1635/282837 useless extension candidates. Maximal degree in co-relation 1229928. Up to 92472 conditions per place. [2023-08-03 19:56:41,045 INFO L140 encePairwiseOnDemand]: 690/698 looper letters, 1134 selfloop transitions, 56 changer transitions 15/1220 dead transitions. [2023-08-03 19:56:41,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 1220 transitions, 11993 flow [2023-08-03 19:56:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:56:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:56:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1949 transitions. [2023-08-03 19:56:41,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46537726838586435 [2023-08-03 19:56:41,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1949 transitions. [2023-08-03 19:56:41,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1949 transitions. [2023-08-03 19:56:41,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:56:41,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1949 transitions. [2023-08-03 19:56:41,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.8333333333333) internal successors, (1949), 6 states have internal predecessors, (1949), 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) [2023-08-03 19:56:41,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 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) [2023-08-03 19:56:41,053 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 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) [2023-08-03 19:56:41,053 INFO L175 Difference]: Start difference. First operand has 166 places, 417 transitions, 3307 flow. Second operand 6 states and 1949 transitions. [2023-08-03 19:56:41,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 1220 transitions, 11993 flow [2023-08-03 19:59:31,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 1220 transitions, 11971 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-03 19:59:31,564 INFO L231 Difference]: Finished difference. Result has 174 places, 459 transitions, 3970 flow [2023-08-03 19:59:31,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3970, PETRI_PLACES=174, PETRI_TRANSITIONS=459} [2023-08-03 19:59:31,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2023-08-03 19:59:31,565 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 459 transitions, 3970 flow [2023-08-03 19:59:31,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 298.4) internal successors, (1492), 5 states have internal predecessors, (1492), 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) [2023-08-03 19:59:31,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:59:31,565 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:59:31,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 19:59:31,565 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:59:31,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:59:31,566 INFO L85 PathProgramCache]: Analyzing trace with hash -686107787, now seen corresponding path program 1 times [2023-08-03 19:59:31,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:59:31,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086846902] [2023-08-03 19:59:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:59:31,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:59:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:59:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:59:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:59:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086846902] [2023-08-03 19:59:31,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086846902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:59:31,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:59:31,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 19:59:31,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059136240] [2023-08-03 19:59:31,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:59:31,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:59:31,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:59:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:59:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:59:31,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 698 [2023-08-03 19:59:31,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 459 transitions, 3970 flow. Second operand has 5 states, 5 states have (on average 299.6) internal successors, (1498), 5 states have internal predecessors, (1498), 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) [2023-08-03 19:59:31,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:59:31,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 698 [2023-08-03 19:59:31,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:18,793 INFO L124 PetriNetUnfolderBase]: 212324/294865 cut-off events. [2023-08-03 20:00:18,793 INFO L125 PetriNetUnfolderBase]: For 2618521/2626634 co-relation queries the response was YES. [2023-08-03 20:00:22,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1320754 conditions, 294865 events. 212324/294865 cut-off events. For 2618521/2626634 co-relation queries the response was YES. Maximal size of possible extension queue 8282. Compared 2220672 event pairs, 111982 based on Foata normal form. 10018/304044 useless extension candidates. Maximal degree in co-relation 1313543. Up to 109283 conditions per place. [2023-08-03 20:00:24,345 INFO L140 encePairwiseOnDemand]: 693/698 looper letters, 969 selfloop transitions, 40 changer transitions 17/1044 dead transitions. [2023-08-03 20:00:24,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 1044 transitions, 10625 flow [2023-08-03 20:00:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:00:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:00:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1621 transitions. [2023-08-03 20:00:24,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644699140401146 [2023-08-03 20:00:24,347 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1621 transitions. [2023-08-03 20:00:24,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1621 transitions. [2023-08-03 20:00:24,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:24,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1621 transitions. [2023-08-03 20:00:24,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.2) internal successors, (1621), 5 states have internal predecessors, (1621), 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) [2023-08-03 20:00:24,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 20:00:24,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 20:00:24,351 INFO L175 Difference]: Start difference. First operand has 174 places, 459 transitions, 3970 flow. Second operand 5 states and 1621 transitions. [2023-08-03 20:00:24,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 1044 transitions, 10625 flow [2023-08-03 20:03:19,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 1044 transitions, 10589 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-03 20:03:19,142 INFO L231 Difference]: Finished difference. Result has 180 places, 460 transitions, 4050 flow [2023-08-03 20:03:19,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4050, PETRI_PLACES=180, PETRI_TRANSITIONS=460} [2023-08-03 20:03:19,143 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2023-08-03 20:03:19,143 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 460 transitions, 4050 flow [2023-08-03 20:03:19,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 299.6) internal successors, (1498), 5 states have internal predecessors, (1498), 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) [2023-08-03 20:03:19,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:03:19,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:03:19,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 20:03:19,144 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:03:19,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:03:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1560106717, now seen corresponding path program 2 times [2023-08-03 20:03:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:03:19,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855263666] [2023-08-03 20:03:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:03:19,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:03:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:03:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 20:03:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:03:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855263666] [2023-08-03 20:03:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855263666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:03:19,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:03:19,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 20:03:19,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995540113] [2023-08-03 20:03:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:03:19,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:03:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:03:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:03:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:03:19,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 698 [2023-08-03 20:03:19,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 460 transitions, 4050 flow. Second operand has 5 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 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) [2023-08-03 20:03:19,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:03:19,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 698 [2023-08-03 20:03:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:04:08,774 INFO L124 PetriNetUnfolderBase]: 216874/298327 cut-off events. [2023-08-03 20:04:08,775 INFO L125 PetriNetUnfolderBase]: For 2683917/2685868 co-relation queries the response was YES. [2023-08-03 20:04:12,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365105 conditions, 298327 events. 216874/298327 cut-off events. For 2683917/2685868 co-relation queries the response was YES. Maximal size of possible extension queue 8708. Compared 2248535 event pairs, 99046 based on Foata normal form. 3346/301050 useless extension candidates. Maximal degree in co-relation 1363994. Up to 113006 conditions per place. [2023-08-03 20:04:14,256 INFO L140 encePairwiseOnDemand]: 690/698 looper letters, 1102 selfloop transitions, 23 changer transitions 17/1158 dead transitions. [2023-08-03 20:04:14,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 1158 transitions, 11901 flow [2023-08-03 20:04:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:04:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:04:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1623 transitions. [2023-08-03 20:04:14,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650429799426934 [2023-08-03 20:04:14,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1623 transitions. [2023-08-03 20:04:14,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1623 transitions. [2023-08-03 20:04:14,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:04:14,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1623 transitions. [2023-08-03 20:04:14,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.6) internal successors, (1623), 5 states have internal predecessors, (1623), 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) [2023-08-03 20:04:14,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 20:04:14,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 698.0) internal successors, (4188), 6 states have internal predecessors, (4188), 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) [2023-08-03 20:04:14,263 INFO L175 Difference]: Start difference. First operand has 180 places, 460 transitions, 4050 flow. Second operand 5 states and 1623 transitions. [2023-08-03 20:04:14,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 1158 transitions, 11901 flow Received shutdown request... [2023-08-03 20:05:36,051 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 20:05:37,061 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 [2023-08-03 20:05:38,250 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 20:05:38,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 20:05:38,251 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-03 20:05:38,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 20:05:38,251 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 20:05:38,251 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:05:38,253 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 20:05:38,253 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 20:05:38,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 08:05:38 BasicIcfg [2023-08-03 20:05:38,256 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 20:05:38,257 INFO L158 Benchmark]: Toolchain (without parser) took 756582.70ms. Allocated memory was 557.8MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 515.1MB in the beginning and 10.3GB in the end (delta: -9.8GB). Peak memory consumption was 10.5GB. Max. memory is 16.0GB. [2023-08-03 20:05:38,257 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 346.0MB. Free memory is still 292.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:05:38,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.86ms. Allocated memory is still 557.8MB. Free memory was 515.1MB in the beginning and 503.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 20:05:38,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.89ms. Allocated memory is still 557.8MB. Free memory was 503.5MB in the beginning and 501.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:05:38,257 INFO L158 Benchmark]: Boogie Preprocessor took 36.96ms. Allocated memory is still 557.8MB. Free memory was 501.1MB in the beginning and 499.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:05:38,258 INFO L158 Benchmark]: RCFGBuilder took 515.48ms. Allocated memory is still 557.8MB. Free memory was 499.4MB in the beginning and 480.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 20:05:38,258 INFO L158 Benchmark]: TraceAbstraction took 755634.69ms. Allocated memory was 557.8MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 479.9MB in the beginning and 10.3GB in the end (delta: -9.9GB). Peak memory consumption was 10.5GB. Max. memory is 16.0GB. [2023-08-03 20:05:38,259 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 346.0MB. Free memory is still 292.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 328.86ms. Allocated memory is still 557.8MB. Free memory was 515.1MB in the beginning and 503.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.89ms. Allocated memory is still 557.8MB. Free memory was 503.5MB in the beginning and 501.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.96ms. Allocated memory is still 557.8MB. Free memory was 501.1MB in the beginning and 499.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 515.48ms. Allocated memory is still 557.8MB. Free memory was 499.4MB in the beginning and 480.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 755634.69ms. Allocated memory was 557.8MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 479.9MB in the beginning and 10.3GB in the end (delta: -9.9GB). Peak memory consumption was 10.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 209 PlacesBefore, 29 PlacesAfterwards, 226 TransitionsBefore, 30 TransitionsAfterwards, 17712 CoEnabledTransitionPairs, 7 FixpointIterations, 52 TrivialSequentialCompositions, 128 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 44 ConcurrentYvCompositions, 16 ChoiceCompositions, 241 TotalNumberOfCompositions, 16695 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16407, independent: 16377, independent conditional: 0, independent unconditional: 16377, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10045, independent: 10035, independent conditional: 0, independent unconditional: 10035, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16407, independent: 6342, independent conditional: 0, independent unconditional: 6342, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 10045, unknown conditional: 0, unknown unconditional: 10045] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 311 PlacesBefore, 53 PlacesAfterwards, 340 TransitionsBefore, 58 TransitionsAfterwards, 60912 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 204 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 77 ConcurrentYvCompositions, 24 ChoiceCompositions, 358 TotalNumberOfCompositions, 69276 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 60778, independent: 60626, independent conditional: 0, independent unconditional: 60626, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 35157, independent: 35088, independent conditional: 0, independent unconditional: 35088, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 60778, independent: 25538, independent conditional: 0, independent unconditional: 25538, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 35157, unknown conditional: 0, unknown unconditional: 35157] , Statistics on independence cache: Total cache size (in pairs): 444, Positive cache size: 428, Positive conditional cache size: 0, Positive unconditional cache size: 428, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 303 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: 6.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 401 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: 749.3s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 735.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2994 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2708 mSDsluCounter, 2093 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1987 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7875 IncrementalHoareTripleChecker+Invalid, 7973 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 106 mSDtfsCounter, 7875 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 709 GetRequests, 576 SyntacticMatches, 15 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4050occurred in iteration=16, InterpolantAutomatonStates: 118, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 865 NumberOfCodeBlocks, 865 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1085 ConstructedInterpolants, 0 QuantifiedInterpolants, 4422 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1806 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 36 InterpolantComputations, 10 PerfectInterpolantSequences, 448/509 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 could not prove your program: Timeout Completed graceful shutdown