./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:21:11,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:21:11,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:21:11,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:21:11,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:21:11,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:21:11,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:21:11,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:21:11,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:21:11,670 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:21:11,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:21:11,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:21:11,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:21:11,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:21:11,672 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:21:11,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:21:11,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:21:11,673 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:21:11,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:21:11,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:21:11,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:21:11,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:21:11,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:21:11,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:21:11,677 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:21:11,677 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:21:11,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:21:11,677 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:21:11,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:21:11,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:21:11,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:21:11,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:21:11,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:21:11,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:21:11,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:21:11,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:21:11,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:21:11,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:21:11,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:21:11,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:21:11,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:21:11,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:21:11,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2024-11-12 08:21:11,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:21:11,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:21:11,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:21:11,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:21:11,919 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:21:11,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-12 08:21:13,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:21:13,348 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:21:13,348 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-12 08:21:13,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85913c41d/45d08411aa124d2baac30b8c11094cb8/FLAG9c06ef419 [2024-11-12 08:21:13,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85913c41d/45d08411aa124d2baac30b8c11094cb8 [2024-11-12 08:21:13,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:21:13,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:21:13,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:21:13,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:21:13,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:21:13,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba3b46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13, skipping insertion in model container [2024-11-12 08:21:13,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:21:13,593 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949] [2024-11-12 08:21:13,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:21:13,605 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:21:13,623 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949] [2024-11-12 08:21:13,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:21:13,640 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:21:13,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13 WrapperNode [2024-11-12 08:21:13,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:21:13,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:21:13,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:21:13,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:21:13,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,671 INFO L138 Inliner]: procedures = 20, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-12 08:21:13,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:21:13,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:21:13,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:21:13,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:21:13,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,703 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 08:21:13,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:21:13,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:21:13,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:21:13,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:21:13,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (1/1) ... [2024-11-12 08:21:13,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:21:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:13,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 08:21:13,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 08:21:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:21:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:21:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:21:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:21:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:21:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:21:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:21:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:21:13,813 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:21:13,893 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:21:13,895 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:21:14,020 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:21:14,020 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:21:14,119 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:21:14,120 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 08:21:14,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:21:14 BoogieIcfgContainer [2024-11-12 08:21:14,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:21:14,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:21:14,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:21:14,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:21:14,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:21:13" (1/3) ... [2024-11-12 08:21:14,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f003d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:21:14, skipping insertion in model container [2024-11-12 08:21:14,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:13" (2/3) ... [2024-11-12 08:21:14,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f003d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:21:14, skipping insertion in model container [2024-11-12 08:21:14,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:21:14" (3/3) ... [2024-11-12 08:21:14,131 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-11-12 08:21:14,144 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:21:14,145 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:21:14,145 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:21:14,205 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:21:14,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-11-12 08:21:14,256 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-12 08:21:14,256 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:21:14,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-12 08:21:14,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-11-12 08:21:14,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-11-12 08:21:14,275 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:21:14,282 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4a63e6ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:21:14,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:21:14,291 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:21:14,291 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-12 08:21:14,291 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:21:14,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:14,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:14,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:14,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash -407976094, now seen corresponding path program 1 times [2024-11-12 08:21:14,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:14,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801699099] [2024-11-12 08:21:14,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:14,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:14,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:14,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801699099] [2024-11-12 08:21:14,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801699099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:14,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:14,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:21:14,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811514607] [2024-11-12 08:21:14,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:14,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:14,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:14,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:14,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:14,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-12 08:21:14,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:14,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:14,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:14,865 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2024-11-12 08:21:14,865 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-12 08:21:14,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 325 event pairs, 22 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2024-11-12 08:21:14,870 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2024-11-12 08:21:14,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2024-11-12 08:21:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2024-11-12 08:21:14,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-12 08:21:14,881 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 35 transitions. [2024-11-12 08:21:14,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2024-11-12 08:21:14,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:21:14,886 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-12 08:21:14,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-12 08:21:14,892 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2024-11-12 08:21:14,892 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-12 08:21:14,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-12 08:21:14,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:14,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:14,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:21:14,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:14,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash 859169077, now seen corresponding path program 1 times [2024-11-12 08:21:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:14,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912704664] [2024-11-12 08:21:14,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:15,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912704664] [2024-11-12 08:21:15,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912704664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536640273] [2024-11-12 08:21:15,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:15,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:15,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:15,210 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) [2024-11-12 08:21:15,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:21:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:15,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:21:15,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:15,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536640273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:15,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:15,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-11-12 08:21:15,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597145933] [2024-11-12 08:21:15,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:15,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:21:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:21:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:21:15,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:15,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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) [2024-11-12 08:21:15,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:15,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:15,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:15,718 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2024-11-12 08:21:15,719 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-12 08:21:15,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 349 event pairs, 12 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2024-11-12 08:21:15,721 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2024-11-12 08:21:15,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2024-11-12 08:21:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:21:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:21:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-12 08:21:15,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-11-12 08:21:15,724 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 59 transitions. [2024-11-12 08:21:15,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2024-11-12 08:21:15,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:15,727 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2024-11-12 08:21:15,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-11-12 08:21:15,729 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places. [2024-11-12 08:21:15,729 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2024-11-12 08:21:15,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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) [2024-11-12 08:21:15,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:15,729 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:15,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:15,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:15,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:15,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2096555247, now seen corresponding path program 2 times [2024-11-12 08:21:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373507649] [2024-11-12 08:21:15,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:15,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373507649] [2024-11-12 08:21:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373507649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808634947] [2024-11-12 08:21:16,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:21:16,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:16,244 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) [2024-11-12 08:21:16,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:21:16,290 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:16,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:16,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:21:16,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:16,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:16,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808634947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:16,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:16,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-12 08:21:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070164084] [2024-11-12 08:21:16,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:16,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 08:21:16,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 08:21:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-12 08:21:16,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:16,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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) [2024-11-12 08:21:16,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:16,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:16,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:16,645 INFO L124 PetriNetUnfolderBase]: 113/210 cut-off events. [2024-11-12 08:21:16,645 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-12 08:21:16,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 210 events. 113/210 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 668 event pairs, 17 based on Foata normal form. 3/213 useless extension candidates. Maximal degree in co-relation 555. Up to 87 conditions per place. [2024-11-12 08:21:16,647 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 36 selfloop transitions, 17 changer transitions 9/63 dead transitions. [2024-11-12 08:21:16,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 63 transitions, 333 flow [2024-11-12 08:21:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:21:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:21:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-11-12 08:21:16,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-11-12 08:21:16,651 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 10 states and 94 transitions. [2024-11-12 08:21:16,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 63 transitions, 333 flow [2024-11-12 08:21:16,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 63 transitions, 315 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:16,653 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 175 flow [2024-11-12 08:21:16,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=175, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-12 08:21:16,655 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2024-11-12 08:21:16,655 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 175 flow [2024-11-12 08:21:16,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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) [2024-11-12 08:21:16,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:16,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:16,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:16,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-12 08:21:16,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:16,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 221933866, now seen corresponding path program 1 times [2024-11-12 08:21:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41186901] [2024-11-12 08:21:16,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:16,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41186901] [2024-11-12 08:21:16,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41186901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824237136] [2024-11-12 08:21:16,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:16,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:16,959 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) [2024-11-12 08:21:16,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:21:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:17,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:21:17,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:17,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:17,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824237136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:17,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:17,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-12 08:21:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237242937] [2024-11-12 08:21:17,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:17,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 08:21:17,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:17,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 08:21:17,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:21:17,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:17,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 175 flow. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 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) [2024-11-12 08:21:17,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:17,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:17,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:17,310 INFO L124 PetriNetUnfolderBase]: 117/221 cut-off events. [2024-11-12 08:21:17,310 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-11-12 08:21:17,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 221 events. 117/221 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 747 event pairs, 19 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 675. Up to 171 conditions per place. [2024-11-12 08:21:17,314 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 6 changer transitions 12/52 dead transitions. [2024-11-12 08:21:17,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 349 flow [2024-11-12 08:21:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:21:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:21:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2024-11-12 08:21:17,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-12 08:21:17,316 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 175 flow. Second operand 6 states and 57 transitions. [2024-11-12 08:21:17,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 349 flow [2024-11-12 08:21:17,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 295 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-12 08:21:17,321 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 159 flow [2024-11-12 08:21:17,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-12 08:21:17,323 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 19 predicate places. [2024-11-12 08:21:17,323 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 159 flow [2024-11-12 08:21:17,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 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) [2024-11-12 08:21:17,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:17,324 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:17,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:17,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:17,529 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:17,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:17,530 INFO L85 PathProgramCache]: Analyzing trace with hash -8456190, now seen corresponding path program 2 times [2024-11-12 08:21:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:17,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505923467] [2024-11-12 08:21:17,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:17,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:17,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505923467] [2024-11-12 08:21:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505923467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675388751] [2024-11-12 08:21:17,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:21:17,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:17,637 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) [2024-11-12 08:21:17,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:21:17,681 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:17,682 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:17,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:21:17,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:17,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:17,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675388751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:17,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:17,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-12 08:21:17,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019861741] [2024-11-12 08:21:17,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:17,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 08:21:17,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 08:21:17,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:21:17,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:17,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 159 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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) [2024-11-12 08:21:17,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:17,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:17,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:17,969 INFO L124 PetriNetUnfolderBase]: 131/242 cut-off events. [2024-11-12 08:21:17,970 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2024-11-12 08:21:17,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 242 events. 131/242 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 840 event pairs, 21 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 743. Up to 185 conditions per place. [2024-11-12 08:21:17,972 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 41 selfloop transitions, 14 changer transitions 4/60 dead transitions. [2024-11-12 08:21:17,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 380 flow [2024-11-12 08:21:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:21:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:21:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2024-11-12 08:21:17,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 08:21:17,974 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 159 flow. Second operand 8 states and 72 transitions. [2024-11-12 08:21:17,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 380 flow [2024-11-12 08:21:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 369 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:17,980 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 222 flow [2024-11-12 08:21:17,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-11-12 08:21:17,981 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2024-11-12 08:21:17,981 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 222 flow [2024-11-12 08:21:17,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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) [2024-11-12 08:21:17,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:17,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:18,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:21:18,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:18,183 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:18,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:18,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1624000063, now seen corresponding path program 3 times [2024-11-12 08:21:18,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:18,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954576986] [2024-11-12 08:21:18,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:18,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:18,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954576986] [2024-11-12 08:21:18,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954576986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206929385] [2024-11-12 08:21:18,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:21:18,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:18,352 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) [2024-11-12 08:21:18,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:21:18,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:21:18,398 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:18,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:21:18,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:18,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206929385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:18,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-12 08:21:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711928228] [2024-11-12 08:21:18,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:18,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 08:21:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 08:21:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:21:18,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:18,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 222 flow. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 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) [2024-11-12 08:21:18,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:18,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:18,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:18,740 INFO L124 PetriNetUnfolderBase]: 145/265 cut-off events. [2024-11-12 08:21:18,740 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-11-12 08:21:18,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 265 events. 145/265 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 944 event pairs, 26 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 876. Up to 209 conditions per place. [2024-11-12 08:21:18,742 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 46 selfloop transitions, 14 changer transitions 6/67 dead transitions. [2024-11-12 08:21:18,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 463 flow [2024-11-12 08:21:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:21:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:21:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2024-11-12 08:21:18,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 08:21:18,743 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 222 flow. Second operand 8 states and 72 transitions. [2024-11-12 08:21:18,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 463 flow [2024-11-12 08:21:18,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 419 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:18,746 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 279 flow [2024-11-12 08:21:18,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=279, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-12 08:21:18,747 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2024-11-12 08:21:18,748 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 279 flow [2024-11-12 08:21:18,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 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) [2024-11-12 08:21:18,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:18,748 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:18,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:18,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:18,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:18,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:18,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1342781756, now seen corresponding path program 3 times [2024-11-12 08:21:18,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:18,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135256220] [2024-11-12 08:21:18,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:18,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:19,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135256220] [2024-11-12 08:21:19,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135256220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097225216] [2024-11-12 08:21:19,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:21:19,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:19,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:19,090 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) [2024-11-12 08:21:19,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:21:19,131 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:21:19,132 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:19,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:21:19,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:19,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:19,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097225216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:19,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2024-11-12 08:21:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377838388] [2024-11-12 08:21:19,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:19,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:21:19,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:21:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:21:19,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:19,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 279 flow. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2024-11-12 08:21:19,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:19,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:19,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:19,503 INFO L124 PetriNetUnfolderBase]: 183/336 cut-off events. [2024-11-12 08:21:19,503 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2024-11-12 08:21:19,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 336 events. 183/336 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1279 event pairs, 30 based on Foata normal form. 3/337 useless extension candidates. Maximal degree in co-relation 1177. Up to 238 conditions per place. [2024-11-12 08:21:19,506 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 55 selfloop transitions, 26 changer transitions 12/94 dead transitions. [2024-11-12 08:21:19,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 686 flow [2024-11-12 08:21:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:21:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:21:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 112 transitions. [2024-11-12 08:21:19,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-12 08:21:19,507 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 279 flow. Second operand 14 states and 112 transitions. [2024-11-12 08:21:19,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 686 flow [2024-11-12 08:21:19,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 94 transitions, 639 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:19,511 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 439 flow [2024-11-12 08:21:19,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=439, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-12 08:21:19,512 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 47 predicate places. [2024-11-12 08:21:19,512 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 439 flow [2024-11-12 08:21:19,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2024-11-12 08:21:19,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:19,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:19,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:19,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:19,714 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:19,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash 535451419, now seen corresponding path program 1 times [2024-11-12 08:21:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145330258] [2024-11-12 08:21:19,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:20,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145330258] [2024-11-12 08:21:20,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145330258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402137620] [2024-11-12 08:21:20,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:20,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:20,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:20,027 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) [2024-11-12 08:21:20,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:21:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:20,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:20,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:20,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:20,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402137620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:20,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:20,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 08:21:20,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417727296] [2024-11-12 08:21:20,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:20,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 08:21:20,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:20,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 08:21:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:21:20,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:20,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 439 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:20,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:20,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:20,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:21,690 INFO L124 PetriNetUnfolderBase]: 249/475 cut-off events. [2024-11-12 08:21:21,690 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2024-11-12 08:21:21,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 475 events. 249/475 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2158 event pairs, 18 based on Foata normal form. 3/478 useless extension candidates. Maximal degree in co-relation 1839. Up to 229 conditions per place. [2024-11-12 08:21:21,694 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 87 selfloop transitions, 50 changer transitions 30/168 dead transitions. [2024-11-12 08:21:21,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 168 transitions, 1267 flow [2024-11-12 08:21:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 08:21:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 08:21:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 199 transitions. [2024-11-12 08:21:21,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-11-12 08:21:21,695 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 439 flow. Second operand 24 states and 199 transitions. [2024-11-12 08:21:21,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 168 transitions, 1267 flow [2024-11-12 08:21:21,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 168 transitions, 1148 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-11-12 08:21:21,702 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 656 flow [2024-11-12 08:21:21,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=656, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-11-12 08:21:21,702 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 74 predicate places. [2024-11-12 08:21:21,702 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 656 flow [2024-11-12 08:21:21,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:21,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:21,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:21,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 08:21:21,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:21,905 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:21,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1194820757, now seen corresponding path program 2 times [2024-11-12 08:21:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575988903] [2024-11-12 08:21:21,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:22,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:22,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575988903] [2024-11-12 08:21:22,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575988903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:22,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688331192] [2024-11-12 08:21:22,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:21:22,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:22,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:22,263 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) [2024-11-12 08:21:22,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:21:22,432 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:22,432 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:22,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:22,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:22,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:22,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688331192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:22,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:22,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 08:21:22,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030759464] [2024-11-12 08:21:22,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:22,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 08:21:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 08:21:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:21:22,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:22,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 656 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:22,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:22,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:22,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:24,157 INFO L124 PetriNetUnfolderBase]: 284/571 cut-off events. [2024-11-12 08:21:24,158 INFO L125 PetriNetUnfolderBase]: For 3884/3884 co-relation queries the response was YES. [2024-11-12 08:21:24,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2776 conditions, 571 events. 284/571 cut-off events. For 3884/3884 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2841 event pairs, 15 based on Foata normal form. 3/570 useless extension candidates. Maximal degree in co-relation 2626. Up to 241 conditions per place. [2024-11-12 08:21:24,162 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 99 selfloop transitions, 78 changer transitions 18/196 dead transitions. [2024-11-12 08:21:24,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 196 transitions, 1845 flow [2024-11-12 08:21:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 08:21:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 08:21:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 240 transitions. [2024-11-12 08:21:24,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-12 08:21:24,165 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 656 flow. Second operand 30 states and 240 transitions. [2024-11-12 08:21:24,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 196 transitions, 1845 flow [2024-11-12 08:21:24,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 196 transitions, 1623 flow, removed 93 selfloop flow, removed 12 redundant places. [2024-11-12 08:21:24,175 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 1125 flow [2024-11-12 08:21:24,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1125, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2024-11-12 08:21:24,176 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 103 predicate places. [2024-11-12 08:21:24,176 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 1125 flow [2024-11-12 08:21:24,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:24,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:24,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:24,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 08:21:24,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-12 08:21:24,378 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:24,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1111703867, now seen corresponding path program 3 times [2024-11-12 08:21:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:24,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507819948] [2024-11-12 08:21:24,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:24,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507819948] [2024-11-12 08:21:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507819948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149907341] [2024-11-12 08:21:24,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:21:24,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:24,672 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) [2024-11-12 08:21:24,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 08:21:24,731 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:21:24,731 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:24,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:24,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:24,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:25,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149907341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:25,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:25,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 08:21:25,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738959256] [2024-11-12 08:21:25,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:25,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 08:21:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 08:21:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:21:25,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:25,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 1125 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:25,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:25,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:25,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:26,212 INFO L124 PetriNetUnfolderBase]: 275/539 cut-off events. [2024-11-12 08:21:26,213 INFO L125 PetriNetUnfolderBase]: For 5639/5639 co-relation queries the response was YES. [2024-11-12 08:21:26,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 539 events. 275/539 cut-off events. For 5639/5639 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2594 event pairs, 15 based on Foata normal form. 3/538 useless extension candidates. Maximal degree in co-relation 2837. Up to 244 conditions per place. [2024-11-12 08:21:26,217 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 87 selfloop transitions, 78 changer transitions 14/180 dead transitions. [2024-11-12 08:21:26,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 180 transitions, 1798 flow [2024-11-12 08:21:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 08:21:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 08:21:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 201 transitions. [2024-11-12 08:21:26,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-11-12 08:21:26,219 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 1125 flow. Second operand 25 states and 201 transitions. [2024-11-12 08:21:26,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 180 transitions, 1798 flow [2024-11-12 08:21:26,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 180 transitions, 1487 flow, removed 136 selfloop flow, removed 13 redundant places. [2024-11-12 08:21:26,237 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 1130 flow [2024-11-12 08:21:26,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1130, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-11-12 08:21:26,238 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 114 predicate places. [2024-11-12 08:21:26,238 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 1130 flow [2024-11-12 08:21:26,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:26,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:26,238 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:26,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:26,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-12 08:21:26,443 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:26,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1058154967, now seen corresponding path program 4 times [2024-11-12 08:21:26,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:26,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690724987] [2024-11-12 08:21:26,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:26,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:26,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:26,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690724987] [2024-11-12 08:21:26,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690724987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:26,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268786077] [2024-11-12 08:21:26,721 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:21:26,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:26,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:26,722 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) [2024-11-12 08:21:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 08:21:26,770 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:21:26,770 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:26,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:26,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:26,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268786077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:27,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:27,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:27,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590025492] [2024-11-12 08:21:27,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:27,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:27,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:27,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 1130 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:27,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:27,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:27,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:28,376 INFO L124 PetriNetUnfolderBase]: 340/653 cut-off events. [2024-11-12 08:21:28,376 INFO L125 PetriNetUnfolderBase]: For 8006/8006 co-relation queries the response was YES. [2024-11-12 08:21:28,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 653 events. 340/653 cut-off events. For 8006/8006 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3225 event pairs, 33 based on Foata normal form. 3/650 useless extension candidates. Maximal degree in co-relation 3581. Up to 508 conditions per place. [2024-11-12 08:21:28,384 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 139 selfloop transitions, 45 changer transitions 15/200 dead transitions. [2024-11-12 08:21:28,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 200 transitions, 2178 flow [2024-11-12 08:21:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 08:21:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 08:21:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 146 transitions. [2024-11-12 08:21:28,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-11-12 08:21:28,388 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 1130 flow. Second operand 18 states and 146 transitions. [2024-11-12 08:21:28,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 200 transitions, 2178 flow [2024-11-12 08:21:28,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 200 transitions, 1766 flow, removed 130 selfloop flow, removed 26 redundant places. [2024-11-12 08:21:28,415 INFO L231 Difference]: Finished difference. Result has 129 places, 157 transitions, 1366 flow [2024-11-12 08:21:28,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1366, PETRI_PLACES=129, PETRI_TRANSITIONS=157} [2024-11-12 08:21:28,415 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 109 predicate places. [2024-11-12 08:21:28,416 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 157 transitions, 1366 flow [2024-11-12 08:21:28,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:28,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:28,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:28,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:28,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-12 08:21:28,621 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:28,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1150688206, now seen corresponding path program 4 times [2024-11-12 08:21:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:28,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013006254] [2024-11-12 08:21:28,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:28,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:28,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:28,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013006254] [2024-11-12 08:21:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013006254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:28,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990827256] [2024-11-12 08:21:28,769 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:21:28,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:28,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:28,771 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) [2024-11-12 08:21:28,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 08:21:28,816 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:21:28,817 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:28,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 08:21:28,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:28,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990827256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:29,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:29,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-11-12 08:21:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139234037] [2024-11-12 08:21:29,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:29,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 08:21:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 08:21:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:21:29,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:29,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 157 transitions, 1366 flow. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2024-11-12 08:21:29,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:29,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:29,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:29,387 INFO L124 PetriNetUnfolderBase]: 332/641 cut-off events. [2024-11-12 08:21:29,387 INFO L125 PetriNetUnfolderBase]: For 2338/2338 co-relation queries the response was YES. [2024-11-12 08:21:29,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3216 conditions, 641 events. 332/641 cut-off events. For 2338/2338 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3189 event pairs, 32 based on Foata normal form. 4/635 useless extension candidates. Maximal degree in co-relation 3151. Up to 510 conditions per place. [2024-11-12 08:21:29,392 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 138 selfloop transitions, 30 changer transitions 25/194 dead transitions. [2024-11-12 08:21:29,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 194 transitions, 1946 flow [2024-11-12 08:21:29,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 08:21:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 08:21:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 109 transitions. [2024-11-12 08:21:29,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2024-11-12 08:21:29,394 INFO L175 Difference]: Start difference. First operand has 129 places, 157 transitions, 1366 flow. Second operand 13 states and 109 transitions. [2024-11-12 08:21:29,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 194 transitions, 1946 flow [2024-11-12 08:21:29,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 1844 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-11-12 08:21:29,409 INFO L231 Difference]: Finished difference. Result has 139 places, 154 transitions, 1310 flow [2024-11-12 08:21:29,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1310, PETRI_PLACES=139, PETRI_TRANSITIONS=154} [2024-11-12 08:21:29,410 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 119 predicate places. [2024-11-12 08:21:29,410 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 154 transitions, 1310 flow [2024-11-12 08:21:29,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2024-11-12 08:21:29,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:29,410 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:29,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 08:21:29,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-12 08:21:29,611 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:29,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 294584239, now seen corresponding path program 5 times [2024-11-12 08:21:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:29,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989642471] [2024-11-12 08:21:29,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:29,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:29,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989642471] [2024-11-12 08:21:29,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989642471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:29,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166277011] [2024-11-12 08:21:29,866 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:21:29,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:29,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:29,868 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) [2024-11-12 08:21:29,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 08:21:29,909 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:29,910 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:29,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:29,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:30,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166277011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:30,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362298160] [2024-11-12 08:21:30,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:30,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:30,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:30,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 154 transitions, 1310 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:30,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:30,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:30,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:31,435 INFO L124 PetriNetUnfolderBase]: 356/685 cut-off events. [2024-11-12 08:21:31,436 INFO L125 PetriNetUnfolderBase]: For 3234/3234 co-relation queries the response was YES. [2024-11-12 08:21:31,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 685 events. 356/685 cut-off events. For 3234/3234 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3417 event pairs, 31 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 3484. Up to 500 conditions per place. [2024-11-12 08:21:31,442 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 146 selfloop transitions, 56 changer transitions 9/212 dead transitions. [2024-11-12 08:21:31,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 212 transitions, 2238 flow [2024-11-12 08:21:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 08:21:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 08:21:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 149 transitions. [2024-11-12 08:21:31,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-11-12 08:21:31,445 INFO L175 Difference]: Start difference. First operand has 139 places, 154 transitions, 1310 flow. Second operand 19 states and 149 transitions. [2024-11-12 08:21:31,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 212 transitions, 2238 flow [2024-11-12 08:21:31,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 212 transitions, 2145 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-11-12 08:21:31,463 INFO L231 Difference]: Finished difference. Result has 152 places, 172 transitions, 1677 flow [2024-11-12 08:21:31,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1677, PETRI_PLACES=152, PETRI_TRANSITIONS=172} [2024-11-12 08:21:31,464 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 132 predicate places. [2024-11-12 08:21:31,464 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 172 transitions, 1677 flow [2024-11-12 08:21:31,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:31,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:31,465 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:31,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:31,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-12 08:21:31,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:31,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:31,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1434463095, now seen corresponding path program 6 times [2024-11-12 08:21:31,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:31,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003915870] [2024-11-12 08:21:31,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:31,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:31,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:31,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003915870] [2024-11-12 08:21:31,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003915870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:31,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724647598] [2024-11-12 08:21:31,908 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:21:31,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:31,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:31,909 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:31,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 08:21:31,952 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:21:31,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:31,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:31,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:32,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:32,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724647598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:32,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805442453] [2024-11-12 08:21:32,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:32,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:32,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:32,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 172 transitions, 1677 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:32,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:32,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:32,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:33,271 INFO L124 PetriNetUnfolderBase]: 393/757 cut-off events. [2024-11-12 08:21:33,271 INFO L125 PetriNetUnfolderBase]: For 5545/5545 co-relation queries the response was YES. [2024-11-12 08:21:33,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 757 events. 393/757 cut-off events. For 5545/5545 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3900 event pairs, 32 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4263. Up to 610 conditions per place. [2024-11-12 08:21:33,279 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 165 selfloop transitions, 52 changer transitions 9/227 dead transitions. [2024-11-12 08:21:33,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 227 transitions, 2647 flow [2024-11-12 08:21:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 08:21:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-12 08:21:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 146 transitions. [2024-11-12 08:21:33,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-11-12 08:21:33,280 INFO L175 Difference]: Start difference. First operand has 152 places, 172 transitions, 1677 flow. Second operand 20 states and 146 transitions. [2024-11-12 08:21:33,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 227 transitions, 2647 flow [2024-11-12 08:21:33,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 227 transitions, 2387 flow, removed 106 selfloop flow, removed 10 redundant places. [2024-11-12 08:21:33,303 INFO L231 Difference]: Finished difference. Result has 167 places, 192 transitions, 1905 flow [2024-11-12 08:21:33,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1905, PETRI_PLACES=167, PETRI_TRANSITIONS=192} [2024-11-12 08:21:33,304 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 147 predicate places. [2024-11-12 08:21:33,304 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 192 transitions, 1905 flow [2024-11-12 08:21:33,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:33,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:33,305 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:33,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:33,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 08:21:33,509 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:33,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1423164821, now seen corresponding path program 7 times [2024-11-12 08:21:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:33,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828827384] [2024-11-12 08:21:33,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:33,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:33,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828827384] [2024-11-12 08:21:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828827384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:33,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199757886] [2024-11-12 08:21:33,779 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:21:33,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:33,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:33,781 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:33,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 08:21:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:33,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:33,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:33,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:34,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199757886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:34,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:34,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:34,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187588793] [2024-11-12 08:21:34,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:34,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:34,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:34,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:34,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:34,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:34,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 192 transitions, 1905 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:34,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:34,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:34,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:34,963 INFO L124 PetriNetUnfolderBase]: 399/770 cut-off events. [2024-11-12 08:21:34,963 INFO L125 PetriNetUnfolderBase]: For 6873/6873 co-relation queries the response was YES. [2024-11-12 08:21:34,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 770 events. 399/770 cut-off events. For 6873/6873 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4003 event pairs, 30 based on Foata normal form. 4/758 useless extension candidates. Maximal degree in co-relation 4443. Up to 644 conditions per place. [2024-11-12 08:21:34,970 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 171 selfloop transitions, 42 changer transitions 9/223 dead transitions. [2024-11-12 08:21:34,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 223 transitions, 2538 flow [2024-11-12 08:21:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 08:21:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 08:21:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 115 transitions. [2024-11-12 08:21:34,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-11-12 08:21:34,973 INFO L175 Difference]: Start difference. First operand has 167 places, 192 transitions, 1905 flow. Second operand 15 states and 115 transitions. [2024-11-12 08:21:34,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 223 transitions, 2538 flow [2024-11-12 08:21:34,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 223 transitions, 2345 flow, removed 75 selfloop flow, removed 11 redundant places. [2024-11-12 08:21:34,996 INFO L231 Difference]: Finished difference. Result has 172 places, 194 transitions, 1854 flow [2024-11-12 08:21:34,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1854, PETRI_PLACES=172, PETRI_TRANSITIONS=194} [2024-11-12 08:21:34,997 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 152 predicate places. [2024-11-12 08:21:34,997 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 194 transitions, 1854 flow [2024-11-12 08:21:34,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:34,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:34,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:35,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-12 08:21:35,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:35,202 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:35,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash 377701129, now seen corresponding path program 8 times [2024-11-12 08:21:35,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:35,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564487653] [2024-11-12 08:21:35,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:35,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564487653] [2024-11-12 08:21:35,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564487653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:35,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379702451] [2024-11-12 08:21:35,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:21:35,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:35,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:35,479 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:35,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 08:21:35,541 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:35,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:35,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:35,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:35,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379702451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:36,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:36,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:36,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660063399] [2024-11-12 08:21:36,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:36,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:36,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:36,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:36,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:36,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 194 transitions, 1854 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:36,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:36,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:36,686 INFO L124 PetriNetUnfolderBase]: 390/737 cut-off events. [2024-11-12 08:21:36,687 INFO L125 PetriNetUnfolderBase]: For 6623/6623 co-relation queries the response was YES. [2024-11-12 08:21:36,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4277 conditions, 737 events. 390/737 cut-off events. For 6623/6623 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3698 event pairs, 28 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4179. Up to 573 conditions per place. [2024-11-12 08:21:36,694 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 152 selfloop transitions, 62 changer transitions 8/223 dead transitions. [2024-11-12 08:21:36,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 223 transitions, 2442 flow [2024-11-12 08:21:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 08:21:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 08:21:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 128 transitions. [2024-11-12 08:21:36,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41830065359477125 [2024-11-12 08:21:36,695 INFO L175 Difference]: Start difference. First operand has 172 places, 194 transitions, 1854 flow. Second operand 17 states and 128 transitions. [2024-11-12 08:21:36,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 223 transitions, 2442 flow [2024-11-12 08:21:36,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 223 transitions, 2319 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-11-12 08:21:36,717 INFO L231 Difference]: Finished difference. Result has 178 places, 195 transitions, 1955 flow [2024-11-12 08:21:36,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1955, PETRI_PLACES=178, PETRI_TRANSITIONS=195} [2024-11-12 08:21:36,718 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 158 predicate places. [2024-11-12 08:21:36,718 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 195 transitions, 1955 flow [2024-11-12 08:21:36,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:36,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:36,718 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:36,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:36,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 08:21:36,919 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:36,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:36,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2084151915, now seen corresponding path program 9 times [2024-11-12 08:21:36,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:36,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082323003] [2024-11-12 08:21:36,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:36,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:37,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082323003] [2024-11-12 08:21:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082323003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611837362] [2024-11-12 08:21:37,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:21:37,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:37,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:37,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:37,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 08:21:37,178 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:21:37,178 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:37,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:37,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:37,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:37,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611837362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:37,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:37,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:37,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627074867] [2024-11-12 08:21:37,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:37,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:37,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:37,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:37,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 195 transitions, 1955 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:37,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:37,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:37,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:38,286 INFO L124 PetriNetUnfolderBase]: 397/756 cut-off events. [2024-11-12 08:21:38,286 INFO L125 PetriNetUnfolderBase]: For 6820/6820 co-relation queries the response was YES. [2024-11-12 08:21:38,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 756 events. 397/756 cut-off events. For 6820/6820 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3873 event pairs, 32 based on Foata normal form. 3/745 useless extension candidates. Maximal degree in co-relation 4452. Up to 657 conditions per place. [2024-11-12 08:21:38,292 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 178 selfloop transitions, 43 changer transitions 7/229 dead transitions. [2024-11-12 08:21:38,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 229 transitions, 2617 flow [2024-11-12 08:21:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 08:21:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 08:21:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 132 transitions. [2024-11-12 08:21:38,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-12 08:21:38,294 INFO L175 Difference]: Start difference. First operand has 178 places, 195 transitions, 1955 flow. Second operand 18 states and 132 transitions. [2024-11-12 08:21:38,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 229 transitions, 2617 flow [2024-11-12 08:21:38,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 229 transitions, 2454 flow, removed 35 selfloop flow, removed 13 redundant places. [2024-11-12 08:21:38,316 INFO L231 Difference]: Finished difference. Result has 185 places, 201 transitions, 2020 flow [2024-11-12 08:21:38,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2020, PETRI_PLACES=185, PETRI_TRANSITIONS=201} [2024-11-12 08:21:38,316 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 165 predicate places. [2024-11-12 08:21:38,317 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 201 transitions, 2020 flow [2024-11-12 08:21:38,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:38,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:38,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:38,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 08:21:38,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 08:21:38,518 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:38,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1351346205, now seen corresponding path program 10 times [2024-11-12 08:21:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:38,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912641284] [2024-11-12 08:21:38,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912641284] [2024-11-12 08:21:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912641284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709441393] [2024-11-12 08:21:38,761 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:21:38,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:38,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:38,763 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:38,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 08:21:38,825 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:21:38,825 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:38,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:38,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:38,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:39,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709441393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:39,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:39,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:39,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247755809] [2024-11-12 08:21:39,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:39,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:39,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:39,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:39,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 201 transitions, 2020 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:39,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:39,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:39,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:40,133 INFO L124 PetriNetUnfolderBase]: 395/752 cut-off events. [2024-11-12 08:21:40,134 INFO L125 PetriNetUnfolderBase]: For 5937/5937 co-relation queries the response was YES. [2024-11-12 08:21:40,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 752 events. 395/752 cut-off events. For 5937/5937 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3824 event pairs, 30 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4370. Up to 615 conditions per place. [2024-11-12 08:21:40,140 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 175 selfloop transitions, 57 changer transitions 7/240 dead transitions. [2024-11-12 08:21:40,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 240 transitions, 2725 flow [2024-11-12 08:21:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 08:21:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-12 08:21:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 167 transitions. [2024-11-12 08:21:40,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4033816425120773 [2024-11-12 08:21:40,141 INFO L175 Difference]: Start difference. First operand has 185 places, 201 transitions, 2020 flow. Second operand 23 states and 167 transitions. [2024-11-12 08:21:40,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 240 transitions, 2725 flow [2024-11-12 08:21:40,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 240 transitions, 2611 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-11-12 08:21:40,164 INFO L231 Difference]: Finished difference. Result has 200 places, 204 transitions, 2132 flow [2024-11-12 08:21:40,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2132, PETRI_PLACES=200, PETRI_TRANSITIONS=204} [2024-11-12 08:21:40,164 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 180 predicate places. [2024-11-12 08:21:40,164 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 204 transitions, 2132 flow [2024-11-12 08:21:40,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:40,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:40,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:40,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:40,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 08:21:40,365 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:40,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1287416163, now seen corresponding path program 11 times [2024-11-12 08:21:40,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:40,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675659781] [2024-11-12 08:21:40,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:40,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:40,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:40,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675659781] [2024-11-12 08:21:40,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675659781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404714730] [2024-11-12 08:21:40,557 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:21:40,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:40,558 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:40,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 08:21:40,624 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:40,625 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:40,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:40,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:40,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:41,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404714730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:41,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:41,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:41,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532404574] [2024-11-12 08:21:41,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:41,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:41,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:41,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:41,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:41,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 204 transitions, 2132 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:41,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:41,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:41,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:45,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:21:49,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:21:50,025 INFO L124 PetriNetUnfolderBase]: 442/850 cut-off events. [2024-11-12 08:21:50,026 INFO L125 PetriNetUnfolderBase]: For 9237/9237 co-relation queries the response was YES. [2024-11-12 08:21:50,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 850 events. 442/850 cut-off events. For 9237/9237 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4565 event pairs, 35 based on Foata normal form. 3/839 useless extension candidates. Maximal degree in co-relation 5101. Up to 636 conditions per place. [2024-11-12 08:21:50,034 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 184 selfloop transitions, 70 changer transitions 21/276 dead transitions. [2024-11-12 08:21:50,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 276 transitions, 3278 flow [2024-11-12 08:21:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 08:21:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-12 08:21:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 174 transitions. [2024-11-12 08:21:50,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2024-11-12 08:21:50,036 INFO L175 Difference]: Start difference. First operand has 200 places, 204 transitions, 2132 flow. Second operand 23 states and 174 transitions. [2024-11-12 08:21:50,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 276 transitions, 3278 flow [2024-11-12 08:21:50,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 276 transitions, 3032 flow, removed 76 selfloop flow, removed 23 redundant places. [2024-11-12 08:21:50,070 INFO L231 Difference]: Finished difference. Result has 210 places, 224 transitions, 2398 flow [2024-11-12 08:21:50,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2398, PETRI_PLACES=210, PETRI_TRANSITIONS=224} [2024-11-12 08:21:50,071 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 190 predicate places. [2024-11-12 08:21:50,071 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 224 transitions, 2398 flow [2024-11-12 08:21:50,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:50,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:50,072 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:50,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-12 08:21:50,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:50,272 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:50,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2086671125, now seen corresponding path program 12 times [2024-11-12 08:21:50,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:50,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469004595] [2024-11-12 08:21:50,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:50,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:50,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469004595] [2024-11-12 08:21:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469004595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:50,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957788384] [2024-11-12 08:21:50,563 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:21:50,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:50,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:50,564 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:50,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 08:21:50,604 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:21:50,605 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:50,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:50,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:50,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957788384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:51,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:51,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 08:21:51,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945830297] [2024-11-12 08:21:51,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:51,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 08:21:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 08:21:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:21:51,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:51,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 224 transitions, 2398 flow. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 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) [2024-11-12 08:21:51,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:51,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:51,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:51,965 INFO L124 PetriNetUnfolderBase]: 480/919 cut-off events. [2024-11-12 08:21:51,965 INFO L125 PetriNetUnfolderBase]: For 13663/13663 co-relation queries the response was YES. [2024-11-12 08:21:51,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6250 conditions, 919 events. 480/919 cut-off events. For 13663/13663 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5002 event pairs, 33 based on Foata normal form. 3/910 useless extension candidates. Maximal degree in co-relation 6109. Up to 640 conditions per place. [2024-11-12 08:21:51,975 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 182 selfloop transitions, 96 changer transitions 18/297 dead transitions. [2024-11-12 08:21:51,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 297 transitions, 3941 flow [2024-11-12 08:21:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 08:21:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 08:21:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 194 transitions. [2024-11-12 08:21:51,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-11-12 08:21:51,976 INFO L175 Difference]: Start difference. First operand has 210 places, 224 transitions, 2398 flow. Second operand 25 states and 194 transitions. [2024-11-12 08:21:51,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 297 transitions, 3941 flow [2024-11-12 08:21:52,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 297 transitions, 3656 flow, removed 119 selfloop flow, removed 11 redundant places. [2024-11-12 08:21:52,019 INFO L231 Difference]: Finished difference. Result has 229 places, 245 transitions, 2929 flow [2024-11-12 08:21:52,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2929, PETRI_PLACES=229, PETRI_TRANSITIONS=245} [2024-11-12 08:21:52,019 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 209 predicate places. [2024-11-12 08:21:52,019 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 245 transitions, 2929 flow [2024-11-12 08:21:52,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 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) [2024-11-12 08:21:52,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:52,020 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:52,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:52,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:52,220 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:52,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash 915556707, now seen corresponding path program 13 times [2024-11-12 08:21:52,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185462909] [2024-11-12 08:21:52,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:52,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:52,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185462909] [2024-11-12 08:21:52,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185462909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:52,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294337254] [2024-11-12 08:21:52,485 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:21:52,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:52,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:52,487 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:52,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-12 08:21:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:52,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:52,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:52,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294337254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:53,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366963606] [2024-11-12 08:21:53,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:53,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:53,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:53,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 245 transitions, 2929 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:53,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:53,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:53,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:53,887 INFO L124 PetriNetUnfolderBase]: 500/950 cut-off events. [2024-11-12 08:21:53,887 INFO L125 PetriNetUnfolderBase]: For 16411/16411 co-relation queries the response was YES. [2024-11-12 08:21:53,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 950 events. 500/950 cut-off events. For 16411/16411 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5196 event pairs, 39 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 6651. Up to 797 conditions per place. [2024-11-12 08:21:53,897 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 224 selfloop transitions, 56 changer transitions 8/289 dead transitions. [2024-11-12 08:21:53,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 289 transitions, 3978 flow [2024-11-12 08:21:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 08:21:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 08:21:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 151 transitions. [2024-11-12 08:21:53,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-11-12 08:21:53,897 INFO L175 Difference]: Start difference. First operand has 229 places, 245 transitions, 2929 flow. Second operand 21 states and 151 transitions. [2024-11-12 08:21:53,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 289 transitions, 3978 flow [2024-11-12 08:21:53,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 289 transitions, 3508 flow, removed 200 selfloop flow, removed 12 redundant places. [2024-11-12 08:21:53,956 INFO L231 Difference]: Finished difference. Result has 238 places, 255 transitions, 2924 flow [2024-11-12 08:21:53,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2924, PETRI_PLACES=238, PETRI_TRANSITIONS=255} [2024-11-12 08:21:53,956 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 218 predicate places. [2024-11-12 08:21:53,957 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 255 transitions, 2924 flow [2024-11-12 08:21:53,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:21:53,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:53,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:53,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:54,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-12 08:21:54,161 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:54,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash -892138867, now seen corresponding path program 14 times [2024-11-12 08:21:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035123586] [2024-11-12 08:21:54,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:54,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:54,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035123586] [2024-11-12 08:21:54,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035123586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:54,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7367483] [2024-11-12 08:21:54,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:21:54,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:54,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:54,409 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:54,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-12 08:21:54,451 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:54,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:54,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:54,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:54,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7367483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:55,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:55,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:55,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809153581] [2024-11-12 08:21:55,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:55,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:55,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:55,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:55,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:55,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 255 transitions, 2924 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:55,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:55,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:55,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:55,717 INFO L124 PetriNetUnfolderBase]: 532/1004 cut-off events. [2024-11-12 08:21:55,717 INFO L125 PetriNetUnfolderBase]: For 20195/20195 co-relation queries the response was YES. [2024-11-12 08:21:55,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 1004 events. 532/1004 cut-off events. For 20195/20195 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5492 event pairs, 40 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 7151. Up to 860 conditions per place. [2024-11-12 08:21:55,725 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 234 selfloop transitions, 54 changer transitions 8/297 dead transitions. [2024-11-12 08:21:55,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 297 transitions, 4174 flow [2024-11-12 08:21:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 08:21:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 08:21:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 126 transitions. [2024-11-12 08:21:55,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-12 08:21:55,726 INFO L175 Difference]: Start difference. First operand has 238 places, 255 transitions, 2924 flow. Second operand 17 states and 126 transitions. [2024-11-12 08:21:55,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 297 transitions, 4174 flow [2024-11-12 08:21:55,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 297 transitions, 3920 flow, removed 96 selfloop flow, removed 17 redundant places. [2024-11-12 08:21:55,786 INFO L231 Difference]: Finished difference. Result has 240 places, 268 transitions, 3201 flow [2024-11-12 08:21:55,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3201, PETRI_PLACES=240, PETRI_TRANSITIONS=268} [2024-11-12 08:21:55,786 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 220 predicate places. [2024-11-12 08:21:55,786 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 268 transitions, 3201 flow [2024-11-12 08:21:55,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:55,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:55,787 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:55,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:55,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-12 08:21:55,987 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:55,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2129647931, now seen corresponding path program 15 times [2024-11-12 08:21:55,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:55,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966064341] [2024-11-12 08:21:55,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:55,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:56,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966064341] [2024-11-12 08:21:56,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966064341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300884061] [2024-11-12 08:21:56,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:21:56,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:56,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:56,207 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:56,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-12 08:21:56,281 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:21:56,281 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:56,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:56,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:56,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300884061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:56,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:56,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 08:21:56,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915792226] [2024-11-12 08:21:56,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:56,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 08:21:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 08:21:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:21:56,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:56,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 268 transitions, 3201 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:56,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:56,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:57,653 INFO L124 PetriNetUnfolderBase]: 533/1017 cut-off events. [2024-11-12 08:21:57,653 INFO L125 PetriNetUnfolderBase]: For 16296/16296 co-relation queries the response was YES. [2024-11-12 08:21:57,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 1017 events. 533/1017 cut-off events. For 16296/16296 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5649 event pairs, 35 based on Foata normal form. 3/1008 useless extension candidates. Maximal degree in co-relation 6958. Up to 744 conditions per place. [2024-11-12 08:21:57,663 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 211 selfloop transitions, 101 changer transitions 12/325 dead transitions. [2024-11-12 08:21:57,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 325 transitions, 4221 flow [2024-11-12 08:21:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 08:21:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 08:21:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 202 transitions. [2024-11-12 08:21:57,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43162393162393164 [2024-11-12 08:21:57,666 INFO L175 Difference]: Start difference. First operand has 240 places, 268 transitions, 3201 flow. Second operand 26 states and 202 transitions. [2024-11-12 08:21:57,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 325 transitions, 4221 flow [2024-11-12 08:21:57,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 325 transitions, 3925 flow, removed 123 selfloop flow, removed 10 redundant places. [2024-11-12 08:21:57,725 INFO L231 Difference]: Finished difference. Result has 256 places, 275 transitions, 3319 flow [2024-11-12 08:21:57,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3319, PETRI_PLACES=256, PETRI_TRANSITIONS=275} [2024-11-12 08:21:57,726 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 236 predicate places. [2024-11-12 08:21:57,726 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 275 transitions, 3319 flow [2024-11-12 08:21:57,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2024-11-12 08:21:57,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:57,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:57,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:57,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:57,927 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:57,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash 836908467, now seen corresponding path program 16 times [2024-11-12 08:21:57,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:57,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701413137] [2024-11-12 08:21:57,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:57,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701413137] [2024-11-12 08:21:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701413137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87145241] [2024-11-12 08:21:58,139 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:21:58,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:58,141 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:58,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-12 08:21:58,186 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:21:58,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:58,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:21:58,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:58,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87145241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:58,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:21:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145078752] [2024-11-12 08:21:58,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:58,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:21:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:58,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:21:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:21:58,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:21:58,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 275 transitions, 3319 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:58,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:58,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:21:58,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:59,574 INFO L124 PetriNetUnfolderBase]: 531/1014 cut-off events. [2024-11-12 08:21:59,575 INFO L125 PetriNetUnfolderBase]: For 16311/16311 co-relation queries the response was YES. [2024-11-12 08:21:59,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7032 conditions, 1014 events. 531/1014 cut-off events. For 16311/16311 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5639 event pairs, 37 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 6933. Up to 858 conditions per place. [2024-11-12 08:21:59,584 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 249 selfloop transitions, 57 changer transitions 8/315 dead transitions. [2024-11-12 08:21:59,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 315 transitions, 4172 flow [2024-11-12 08:21:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 08:21:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 08:21:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 164 transitions. [2024-11-12 08:21:59,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-11-12 08:21:59,585 INFO L175 Difference]: Start difference. First operand has 256 places, 275 transitions, 3319 flow. Second operand 22 states and 164 transitions. [2024-11-12 08:21:59,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 315 transitions, 4172 flow [2024-11-12 08:21:59,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 315 transitions, 3804 flow, removed 112 selfloop flow, removed 24 redundant places. [2024-11-12 08:21:59,652 INFO L231 Difference]: Finished difference. Result has 254 places, 278 transitions, 3178 flow [2024-11-12 08:21:59,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3178, PETRI_PLACES=254, PETRI_TRANSITIONS=278} [2024-11-12 08:21:59,652 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 234 predicate places. [2024-11-12 08:21:59,652 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 278 transitions, 3178 flow [2024-11-12 08:21:59,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-12 08:21:59,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:59,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:59,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-12 08:21:59,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:59,853 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:59,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:59,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1672959803, now seen corresponding path program 17 times [2024-11-12 08:21:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:59,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966273775] [2024-11-12 08:21:59,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:00,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:00,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966273775] [2024-11-12 08:22:00,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966273775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:22:00,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777434738] [2024-11-12 08:22:00,042 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:22:00,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:22:00,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:22:00,043 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:22:00,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-12 08:22:00,111 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:22:00,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:22:00,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:22:00,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:22:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:00,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:22:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:02,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777434738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:22:02,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:22:02,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:22:02,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621529237] [2024-11-12 08:22:02,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:22:02,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:22:02,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:22:02,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:22:02,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:22:02,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 278 transitions, 3178 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:22:02,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:02,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:22:02,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:02,540 INFO L124 PetriNetUnfolderBase]: 533/1028 cut-off events. [2024-11-12 08:22:02,540 INFO L125 PetriNetUnfolderBase]: For 11087/11087 co-relation queries the response was YES. [2024-11-12 08:22:02,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 1028 events. 533/1028 cut-off events. For 11087/11087 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5766 event pairs, 44 based on Foata normal form. 3/1017 useless extension candidates. Maximal degree in co-relation 6751. Up to 931 conditions per place. [2024-11-12 08:22:02,550 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 260 selfloop transitions, 40 changer transitions 7/308 dead transitions. [2024-11-12 08:22:02,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 308 transitions, 4018 flow [2024-11-12 08:22:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 08:22:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 08:22:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 117 transitions. [2024-11-12 08:22:02,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-11-12 08:22:02,551 INFO L175 Difference]: Start difference. First operand has 254 places, 278 transitions, 3178 flow. Second operand 16 states and 117 transitions. [2024-11-12 08:22:02,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 308 transitions, 4018 flow [2024-11-12 08:22:02,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 308 transitions, 3783 flow, removed 81 selfloop flow, removed 19 redundant places. [2024-11-12 08:22:02,611 INFO L231 Difference]: Finished difference. Result has 254 places, 283 transitions, 3166 flow [2024-11-12 08:22:02,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3166, PETRI_PLACES=254, PETRI_TRANSITIONS=283} [2024-11-12 08:22:02,612 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 234 predicate places. [2024-11-12 08:22:02,612 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 283 transitions, 3166 flow [2024-11-12 08:22:02,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:22:02,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:02,612 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:02,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-12 08:22:02,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-12 08:22:02,813 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:22:02,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash -813490627, now seen corresponding path program 18 times [2024-11-12 08:22:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301929097] [2024-11-12 08:22:02,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:03,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301929097] [2024-11-12 08:22:03,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301929097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:22:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557676720] [2024-11-12 08:22:03,033 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:22:03,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:22:03,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:22:03,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:22:03,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-12 08:22:03,107 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:22:03,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:22:03,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:22:03,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:22:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:03,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:22:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:03,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557676720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:22:03,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:22:03,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 08:22:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552668357] [2024-11-12 08:22:03,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:22:03,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:22:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:22:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:22:03,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:22:03,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 283 transitions, 3166 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:22:03,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:03,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:22:03,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:04,400 INFO L124 PetriNetUnfolderBase]: 531/1024 cut-off events. [2024-11-12 08:22:04,401 INFO L125 PetriNetUnfolderBase]: For 10519/10519 co-relation queries the response was YES. [2024-11-12 08:22:04,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6709 conditions, 1024 events. 531/1024 cut-off events. For 10519/10519 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5722 event pairs, 41 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 6616. Up to 875 conditions per place. [2024-11-12 08:22:04,410 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 248 selfloop transitions, 59 changer transitions 7/315 dead transitions. [2024-11-12 08:22:04,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 315 transitions, 4035 flow [2024-11-12 08:22:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 08:22:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 08:22:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 136 transitions. [2024-11-12 08:22:04,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-11-12 08:22:04,411 INFO L175 Difference]: Start difference. First operand has 254 places, 283 transitions, 3166 flow. Second operand 18 states and 136 transitions. [2024-11-12 08:22:04,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 315 transitions, 4035 flow [2024-11-12 08:22:04,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 315 transitions, 3868 flow, removed 49 selfloop flow, removed 13 redundant places. [2024-11-12 08:22:04,463 INFO L231 Difference]: Finished difference. Result has 260 places, 286 transitions, 3253 flow [2024-11-12 08:22:04,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3253, PETRI_PLACES=260, PETRI_TRANSITIONS=286} [2024-11-12 08:22:04,464 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 240 predicate places. [2024-11-12 08:22:04,464 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 286 transitions, 3253 flow [2024-11-12 08:22:04,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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) [2024-11-12 08:22:04,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:04,464 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:04,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-12 08:22:04,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-12 08:22:04,665 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:22:04,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash 81618300, now seen corresponding path program 19 times [2024-11-12 08:22:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:04,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687051832] [2024-11-12 08:22:04,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:05,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:05,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687051832] [2024-11-12 08:22:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687051832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:22:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740257829] [2024-11-12 08:22:05,010 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:22:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:22:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:22:05,011 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:22:05,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-12 08:22:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:05,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 08:22:05,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:22:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:05,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:22:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:13,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740257829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:22:13,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:22:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-12 08:22:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733790538] [2024-11-12 08:22:13,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:22:13,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 08:22:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 08:22:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=336, Unknown=1, NotChecked=0, Total=420 [2024-11-12 08:22:13,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-12 08:22:13,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 286 transitions, 3253 flow. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 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) [2024-11-12 08:22:13,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:13,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-12 08:22:13,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:19,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:24,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:29,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:34,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:38,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:41,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:45,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:49,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:22:49,999 INFO L124 PetriNetUnfolderBase]: 637/1215 cut-off events. [2024-11-12 08:22:50,000 INFO L125 PetriNetUnfolderBase]: For 19136/19136 co-relation queries the response was YES.