/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:20:17,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:20:17,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 20:20:17,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:20:17,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:20:17,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:20:17,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:20:17,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:20:17,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:20:17,480 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:20:17,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:20:17,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:20:17,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:20:17,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:20:17,480 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:20:17,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:20:17,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:20:17,480 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:20:17,481 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:20:17,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:20:17,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:20:17,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:20:17,482 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 20:20:17,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:20:17,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:20:17,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:20:17,720 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:20:17,720 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:20:17,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2025-04-13 20:20:18,966 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ccc562e/0489e01aad0c4635952d467e0d056805/FLAG8492916e7 [2025-04-13 20:20:19,138 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:20:19,138 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2025-04-13 20:20:19,144 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ccc562e/0489e01aad0c4635952d467e0d056805/FLAG8492916e7 [2025-04-13 20:20:19,971 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ccc562e/0489e01aad0c4635952d467e0d056805 [2025-04-13 20:20:19,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:20:19,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:20:19,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:20:19,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:20:19,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:20:19,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:20:19" (1/1) ... [2025-04-13 20:20:19,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dffc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:19, skipping insertion in model container [2025-04-13 20:20:19,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:20:19" (1/1) ... [2025-04-13 20:20:19,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:20:20,139 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c[3446,3459] [2025-04-13 20:20:20,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:20:20,151 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:20:20,173 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c[3446,3459] [2025-04-13 20:20:20,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:20:20,187 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:20:20,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20 WrapperNode [2025-04-13 20:20:20,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:20:20,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:20:20,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:20:20,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:20:20,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,225 INFO L138 Inliner]: procedures = 24, calls = 24, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 300 [2025-04-13 20:20:20,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:20:20,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:20:20,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:20:20,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:20:20,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,254 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]. [2025-04-13 20:20:20,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,266 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,269 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:20:20,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:20:20,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:20:20,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:20:20,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (1/1) ... [2025-04-13 20:20:20,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:20:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:20:20,304 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) [2025-04-13 20:20:20,309 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 [2025-04-13 20:20:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:20:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:20:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2025-04-13 20:20:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:20:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:20:20,329 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 20:20:20,427 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:20:20,430 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:20:20,771 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:20:20,771 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:20:20,771 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:20:21,034 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 20:20:21,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:20:21 BoogieIcfgContainer [2025-04-13 20:20:21,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:20:21,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:20:21,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:20:21,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:20:21,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:20:19" (1/3) ... [2025-04-13 20:20:21,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0ef275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:20:21, skipping insertion in model container [2025-04-13 20:20:21,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:20:20" (2/3) ... [2025-04-13 20:20:21,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0ef275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:20:21, skipping insertion in model container [2025-04-13 20:20:21,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:20:21" (3/3) ... [2025-04-13 20:20:21,042 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2025-04-13 20:20:21,052 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:20:21,054 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-8.wvr.c that has 9 procedures, 93 locations, 91 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 20:20:21,055 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:20:21,126 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 20:20:21,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 99 transitions, 254 flow [2025-04-13 20:20:21,200 INFO L116 PetriNetUnfolderBase]: 7/91 cut-off events. [2025-04-13 20:20:21,202 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-13 20:20:21,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 91 events. 7/91 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2025-04-13 20:20:21,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 99 transitions, 254 flow [2025-04-13 20:20:21,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 90 transitions, 228 flow [2025-04-13 20:20:21,217 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:20:21,224 INFO L340 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;@3358d20e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:20:21,224 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-04-13 20:20:21,258 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:20:21,258 INFO L116 PetriNetUnfolderBase]: 7/89 cut-off events. [2025-04-13 20:20:21,258 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-13 20:20:21,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:20:21,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:20:21,259 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-04-13 20:20:21,264 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:20:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash -406897156, now seen corresponding path program 1 times [2025-04-13 20:20:21,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:20:21,269 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898079805] [2025-04-13 20:20:21,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:20:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:20:21,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-04-13 20:20:21,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-04-13 20:20:21,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:20:21,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:20:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:20:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:20:21,701 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898079805] [2025-04-13 20:20:21,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898079805] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:20:21,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:20:21,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 20:20:21,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717964055] [2025-04-13 20:20:21,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:20:21,708 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:20:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:20:21,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:20:21,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:20:21,748 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 99 [2025-04-13 20:20:21,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2025-04-13 20:20:21,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:20:21,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 99 [2025-04-13 20:20:21,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand