/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-6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:19:33,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:19:33,716 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 20:19:33,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:19:33,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:19:33,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:19:33,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:19:33,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:19:33,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:19:33,748 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:19:33,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:19:33,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:19:33,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:19:33,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:19:33,748 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:19:33,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:19:33,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:19:33,749 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:19:33,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:19:33,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:19:33,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:19:33,750 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:19:33,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:19:33,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:19:33,750 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:19:33,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:19:33,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:19:33,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:19:33,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:19:33,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:19:33,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:19:33,751 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 20:19:33,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:19:33,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:19:33,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:19:33,974 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:19:33,975 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:19:33,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2025-04-13 20:19:35,297 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/444a7f0e2/02f8c9132d984d83832e0a8ef143dbe6/FLAG60473c76f [2025-04-13 20:19:35,497 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:19:35,498 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2025-04-13 20:19:35,505 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/444a7f0e2/02f8c9132d984d83832e0a8ef143dbe6/FLAG60473c76f [2025-04-13 20:19:36,296 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/444a7f0e2/02f8c9132d984d83832e0a8ef143dbe6 [2025-04-13 20:19:36,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:19:36,299 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:19:36,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:19:36,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:19:36,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:19:36,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a07bb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36, skipping insertion in model container [2025-04-13 20:19:36,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,316 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:19:36,487 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-6.wvr.c[3000,3013] [2025-04-13 20:19:36,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:19:36,506 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:19:36,548 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-6.wvr.c[3000,3013] [2025-04-13 20:19:36,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:19:36,561 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:19:36,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36 WrapperNode [2025-04-13 20:19:36,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:19:36,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:19:36,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:19:36,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:19:36,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,599 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 236 [2025-04-13 20:19:36,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:19:36,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:19:36,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:19:36,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:19:36,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,618 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,637 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 20:19:36,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,640 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:19:36,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:19:36,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:19:36,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:19:36,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (1/1) ... [2025-04-13 20:19:36,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:19:36,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:19:36,671 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 20:19:36,673 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 20:19:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:19:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:19:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:19:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:19:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:19:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 20:19:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 20:19:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 20:19:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 20:19:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:19:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-13 20:19:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-13 20:19:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-13 20:19:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-13 20:19:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:19:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:19:36,689 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 20:19:36,755 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:19:36,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:19:36,970 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:19:36,971 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:19:36,971 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:19:37,161 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 20:19:37,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:19:37 BoogieIcfgContainer [2025-04-13 20:19:37,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:19:37,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:19:37,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:19:37,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:19:37,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:19:36" (1/3) ... [2025-04-13 20:19:37,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567c0af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:19:37, skipping insertion in model container [2025-04-13 20:19:37,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:36" (2/3) ... [2025-04-13 20:19:37,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567c0af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:19:37, skipping insertion in model container [2025-04-13 20:19:37,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:19:37" (3/3) ... [2025-04-13 20:19:37,169 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2025-04-13 20:19:37,179 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:19:37,180 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-6.wvr.c that has 7 procedures, 73 locations, 71 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 20:19:37,180 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:19:37,233 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-13 20:19:37,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 77 transitions, 196 flow [2025-04-13 20:19:37,305 INFO L116 PetriNetUnfolderBase]: 5/71 cut-off events. [2025-04-13 20:19:37,308 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-13 20:19:37,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 71 events. 5/71 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2025-04-13 20:19:37,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 77 transitions, 196 flow [2025-04-13 20:19:37,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 70 transitions, 176 flow [2025-04-13 20:19:37,322 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:19:37,334 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;@4362672a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:19:37,335 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 20:19:37,359 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:19:37,359 INFO L116 PetriNetUnfolderBase]: 5/69 cut-off events. [2025-04-13 20:19:37,359 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-13 20:19:37,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:37,360 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] [2025-04-13 20:19:37,360 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 4 more)] === [2025-04-13 20:19:37,366 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash -183377109, now seen corresponding path program 1 times [2025-04-13 20:19:37,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:37,371 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342957590] [2025-04-13 20:19:37,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:37,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-04-13 20:19:37,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-04-13 20:19:37,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:37,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:37,728 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 20:19:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:37,730 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342957590] [2025-04-13 20:19:37,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342957590] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:37,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 20:19:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910478102] [2025-04-13 20:19:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:37,737 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:19:37,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:37,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:19:37,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:19:37,770 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2025-04-13 20:19:37,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 20:19:37,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:37,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2025-04-13 20:19:37,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand