/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-sorted.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:10:18,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:10:18,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:10:18,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:10:18,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:10:18,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:10:18,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:10:18,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:10:18,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:10:18,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:10:18,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:10:18,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:10:18,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:10:18,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:10:18,724 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:10:18,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:10:18,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:10:18,725 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:10:18,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:10:18,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:10:18,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:10:18,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:10:18,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:10:18,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:10:18,727 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:10:18,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:10:18,727 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:10:18,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:10:18,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:10:18,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:10:18,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:10:18,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:10:18,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:10:18,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:10:18,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:10:18,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:10:18,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:10:18,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:10:18,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:10:18,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:10:18,730 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:10:18,731 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 03:10:18,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:10:18,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:10:18,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:10:18,955 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:10:18,955 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:10:18,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-sorted.wvr_bound2.c [2023-08-04 03:10:20,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:10:20,337 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:10:20,337 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-sorted.wvr_bound2.c [2023-08-04 03:10:20,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e04888f1/049d7d1426da403d91eab53010f745bc/FLAG65ddf8e33 [2023-08-04 03:10:20,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e04888f1/049d7d1426da403d91eab53010f745bc [2023-08-04 03:10:20,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:10:20,372 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:10:20,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:10:20,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:10:20,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:10:20,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adef512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20, skipping insertion in model container [2023-08-04 03:10:20,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,410 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:10:20,606 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-sorted.wvr_bound2.c[2677,2690] [2023-08-04 03:10:20,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:10:20,630 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:10:20,675 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-sorted.wvr_bound2.c[2677,2690] [2023-08-04 03:10:20,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:10:20,695 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:10:20,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20 WrapperNode [2023-08-04 03:10:20,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:10:20,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:10:20,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:10:20,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:10:20,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,737 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 156 [2023-08-04 03:10:20,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:10:20,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:10:20,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:10:20,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:10:20,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:10:20,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:10:20,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:10:20,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:10:20,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (1/1) ... [2023-08-04 03:10:20,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:10:20,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:10:21,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 03:10:21,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 03:10:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:10:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 03:10:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 03:10:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 03:10:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 03:10:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 03:10:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 03:10:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:10:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:10:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:10:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 03:10:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:10:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:10:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:10:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:10:21,409 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 03:10:21,498 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:10:21,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:10:21,986 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:10:21,994 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:10:21,995 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-04 03:10:21,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:10:21 BoogieIcfgContainer [2023-08-04 03:10:21,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:10:22,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:10:22,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:10:22,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:10:22,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:10:20" (1/3) ... [2023-08-04 03:10:22,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea3a16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:10:22, skipping insertion in model container [2023-08-04 03:10:22,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:10:20" (2/3) ... [2023-08-04 03:10:22,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea3a16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:10:22, skipping insertion in model container [2023-08-04 03:10:22,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:10:21" (3/3) ... [2023-08-04 03:10:22,008 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-more-sorted.wvr_bound2.c [2023-08-04 03:10:22,038 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:10:22,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:10:22,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:10:22,047 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:10:22,119 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 03:10:22,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 223 transitions, 488 flow [2023-08-04 03:10:22,340 INFO L124 PetriNetUnfolderBase]: 108/727 cut-off events. [2023-08-04 03:10:22,340 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:10:22,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 727 events. 108/727 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3783 event pairs, 0 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 404. Up to 16 conditions per place. [2023-08-04 03:10:22,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 223 transitions, 488 flow [2023-08-04 03:10:22,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 223 transitions, 488 flow [2023-08-04 03:10:22,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:10:22,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 223 transitions, 488 flow [2023-08-04 03:10:22,378 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 223 transitions, 488 flow [2023-08-04 03:10:22,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 223 transitions, 488 flow [2023-08-04 03:10:22,477 INFO L124 PetriNetUnfolderBase]: 108/727 cut-off events. [2023-08-04 03:10:22,477 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:10:22,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 727 events. 108/727 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3783 event pairs, 0 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 404. Up to 16 conditions per place. [2023-08-04 03:10:22,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 10944 [2023-08-04 03:10:28,047 INFO L134 LiptonReduction]: Checked pairs total: 20409 [2023-08-04 03:10:28,047 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-08-04 03:10:28,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:10:28,065 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2693c9cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:10:28,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:10:28,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:10:28,071 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-08-04 03:10:28,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:10:28,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:10:28,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-04 03:10:28,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:10:28,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:10:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1368045438, now seen corresponding path program 1 times [2023-08-04 03:10:28,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:10:28,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174045439] [2023-08-04 03:10:28,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:10:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:10:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:10:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:10:28,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:10:28,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174045439] [2023-08-04 03:10:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174045439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:10:28,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:10:28,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:10:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377423441] [2023-08-04 03:10:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:10:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:10:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:10:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:10:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:10:28,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 429 [2023-08-04 03:10:28,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 58 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:10:28,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:10:28,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 429 [2023-08-04 03:10:28,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:10:29,356 INFO L124 PetriNetUnfolderBase]: 8228/10673 cut-off events. [2023-08-04 03:10:29,357 INFO L125 PetriNetUnfolderBase]: For 470/470 co-relation queries the response was YES. [2023-08-04 03:10:29,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21445 conditions, 10673 events. 8228/10673 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 49788 event pairs, 3698 based on Foata normal form. 0/5665 useless extension candidates. Maximal degree in co-relation 17443. Up to 10314 conditions per place. [2023-08-04 03:10:29,400 INFO L140 encePairwiseOnDemand]: 425/429 looper letters, 27 selfloop transitions, 2 changer transitions 22/58 dead transitions. [2023-08-04 03:10:29,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 254 flow [2023-08-04 03:10:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:10:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:10:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-04 03:10:29,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840714840714841 [2023-08-04 03:10:29,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-04 03:10:29,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-04 03:10:29,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:10:29,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-04 03:10:29,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:10:29,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:10:29,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:10:29,439 INFO L175 Difference]: Start difference. First operand has 49 places, 58 transitions, 158 flow. Second operand 3 states and 623 transitions. [2023-08-04 03:10:29,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 254 flow [2023-08-04 03:10:29,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:10:29,447 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 97 flow [2023-08-04 03:10:29,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-04 03:10:29,452 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-04 03:10:29,452 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 97 flow [2023-08-04 03:10:29,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:10:29,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:10:29,453 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-04 03:10:29,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:10:29,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:10:29,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:10:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 901099209, now seen corresponding path program 1 times [2023-08-04 03:10:29,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:10:29,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254115816] [2023-08-04 03:10:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:10:29,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:10:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:10:29,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:10:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:10:29,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:10:29,577 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:10:29,579 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 03:10:29,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 03:10:29,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 03:10:29,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 03:10:29,581 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 03:10:29,583 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 03:10:29,584 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:10:29,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:10:29,632 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 03:10:29,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 292 transitions, 674 flow [2023-08-04 03:10:30,300 INFO L124 PetriNetUnfolderBase]: 917/4387 cut-off events. [2023-08-04 03:10:30,300 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:10:30,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 4387 events. 917/4387 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 35739 event pairs, 11 based on Foata normal form. 0/3714 useless extension candidates. Maximal degree in co-relation 2620. Up to 192 conditions per place. [2023-08-04 03:10:30,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 292 transitions, 674 flow [2023-08-04 03:10:30,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 292 transitions, 674 flow [2023-08-04 03:10:30,398 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:10:30,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 292 transitions, 674 flow [2023-08-04 03:10:30,399 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 292 transitions, 674 flow [2023-08-04 03:10:30,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 292 transitions, 674 flow [2023-08-04 03:10:30,990 INFO L124 PetriNetUnfolderBase]: 917/4387 cut-off events. [2023-08-04 03:10:30,990 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:10:31,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 4387 events. 917/4387 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 35739 event pairs, 11 based on Foata normal form. 0/3714 useless extension candidates. Maximal degree in co-relation 2620. Up to 192 conditions per place. [2023-08-04 03:10:31,146 INFO L119 LiptonReduction]: Number of co-enabled transitions 30780 [2023-08-04 03:10:36,955 INFO L134 LiptonReduction]: Checked pairs total: 84508 [2023-08-04 03:10:36,955 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-08-04 03:10:36,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:10:36,958 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2693c9cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:10:36,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:10:36,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:10:36,967 INFO L124 PetriNetUnfolderBase]: 20/142 cut-off events. [2023-08-04 03:10:36,968 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 03:10:36,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:10:36,968 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 03:10:36,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:10:36,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:10:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1289586838, now seen corresponding path program 1 times [2023-08-04 03:10:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:10:36,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213665224] [2023-08-04 03:10:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:10:36,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:10:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:10:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:10:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:10:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213665224] [2023-08-04 03:10:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213665224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:10:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31280132] [2023-08-04 03:10:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:10:37,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:10:37,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:10:37,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:10:37,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 03:10:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:10:37,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:10:37,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:10:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:10:37,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:10:37,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31280132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:10:37,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:10:37,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:10:37,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501369451] [2023-08-04 03:10:37,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:10:37,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:10:37,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:10:37,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:10:37,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:10:37,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 531 [2023-08-04 03:10:37,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:10:37,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:10:37,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 531 [2023-08-04 03:10:37,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand