/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/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:36:36,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:36:36,613 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 19:36:36,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:36:36,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:36:36,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:36:36,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:36:36,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:36:36,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:36:36,640 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:36:36,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:36:36,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:36:36,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:36:36,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:36:36,641 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:36:36,642 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:36,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:36,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:36:36,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:36:36,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:36:36,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:36:36,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:36:36,643 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 19:36:36,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:36:36,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:36:36,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:36:36,869 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:36:36,871 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:36:36,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:38,215 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffad6940/971b955d1c014bc79e58641a88a866b8/FLAG3a0d8eadd [2025-04-13 19:36:38,443 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:36:38,443 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:38,456 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffad6940/971b955d1c014bc79e58641a88a866b8/FLAG3a0d8eadd [2025-04-13 19:36:39,369 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffad6940/971b955d1c014bc79e58641a88a866b8 [2025-04-13 19:36:39,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:36:39,372 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:36:39,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:36:39,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:36:39,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:36:39,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683fca54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39, skipping insertion in model container [2025-04-13 19:36:39,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:36:39,560 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:36:39,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:36:39,721 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:36:39,736 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:36:39,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:36:39,811 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:36:39,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39 WrapperNode [2025-04-13 19:36:39,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:36:39,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:36:39,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:36:39,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:36:39,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,846 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-04-13 19:36:39,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:36:39,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:36:39,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:36:39,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:36:39,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,865 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 19:36:39,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,868 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:36:39,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:36:39,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:36:39,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:36:39,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (1/1) ... [2025-04-13 19:36:39,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:39,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:36:39,907 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 19:36:39,908 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 19:36:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:36:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:36:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 19:36:39,924 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 19:36:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 19:36:39,924 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 19:36:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-13 19:36:39,925 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-13 19:36:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:36:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:36:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:36:39,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:36:39,926 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 19:36:40,007 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:36:40,008 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:36:40,089 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:36:40,090 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:36:40,090 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:36:40,171 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:36:40,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:36:40 BoogieIcfgContainer [2025-04-13 19:36:40,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:36:40,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:36:40,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:36:40,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:36:40,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:36:39" (1/3) ... [2025-04-13 19:36:40,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42928dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:36:40, skipping insertion in model container [2025-04-13 19:36:40,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:39" (2/3) ... [2025-04-13 19:36:40,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42928dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:36:40, skipping insertion in model container [2025-04-13 19:36:40,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:36:40" (3/3) ... [2025-04-13 19:36:40,179 INFO L128 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:40,188 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:36:40,189 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 36 locations, 32 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:36:40,190 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:36:40,220 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:36:40,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 35 transitions, 82 flow [2025-04-13 19:36:40,267 INFO L116 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-04-13 19:36:40,268 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:36:40,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-13 19:36:40,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 35 transitions, 82 flow [2025-04-13 19:36:40,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2025-04-13 19:36:40,278 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:36:40,289 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;@28d83cdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:36:40,289 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:36:40,296 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:36:40,296 INFO L116 PetriNetUnfolderBase]: 0/29 cut-off events. [2025-04-13 19:36:40,296 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:36:40,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:40,297 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:36:40,297 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 1 more)] === [2025-04-13 19:36:40,301 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1828719578, now seen corresponding path program 1 times [2025-04-13 19:36:40,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:40,305 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467027836] [2025-04-13 19:36:40,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:40,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:40,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 19:36:40,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 19:36:40,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:40,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:40,627 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 19:36:40,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:40,628 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467027836] [2025-04-13 19:36:40,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467027836] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:40,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:40,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:36:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445524651] [2025-04-13 19:36:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:40,635 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:36:40,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:40,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:36:40,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:36:40,669 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2025-04-13 19:36:40,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 19:36:40,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:40,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2025-04-13 19:36:40,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:40,803 INFO L116 PetriNetUnfolderBase]: 291/540 cut-off events. [2025-04-13 19:36:40,803 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 19:36:40,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 540 events. 291/540 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2785 event pairs, 58 based on Foata normal form. 27/557 useless extension candidates. Maximal degree in co-relation 1035. Up to 236 conditions per place. [2025-04-13 19:36:40,812 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2025-04-13 19:36:40,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2025-04-13 19:36:40,814 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:36:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:36:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-04-13 19:36:40,822 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-04-13 19:36:40,824 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 105 transitions. [2025-04-13 19:36:40,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2025-04-13 19:36:40,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 19:36:40,830 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2025-04-13 19:36:40,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2025-04-13 19:36:40,835 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2025-04-13 19:36:40,835 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2025-04-13 19:36:40,836 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 19:36:40,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:40,836 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:36:40,836 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:36:40,836 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:36:40,837 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1820843353, now seen corresponding path program 1 times [2025-04-13 19:36:40,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:40,838 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047093754] [2025-04-13 19:36:40,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:40,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 19:36:40,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 19:36:40,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:40,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:40,987 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 19:36:40,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:40,987 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047093754] [2025-04-13 19:36:40,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047093754] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:40,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:40,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:36:40,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643093876] [2025-04-13 19:36:40,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:40,988 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:36:40,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:40,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:36:40,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:36:41,000 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2025-04-13 19:36:41,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 19:36:41,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:41,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2025-04-13 19:36:41,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:41,142 INFO L116 PetriNetUnfolderBase]: 249/467 cut-off events. [2025-04-13 19:36:41,142 INFO L117 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-04-13 19:36:41,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 467 events. 249/467 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2136 event pairs, 15 based on Foata normal form. 26/484 useless extension candidates. Maximal degree in co-relation 1133. Up to 188 conditions per place. [2025-04-13 19:36:41,147 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 31 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2025-04-13 19:36:41,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 245 flow [2025-04-13 19:36:41,148 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:36:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:36:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-04-13 19:36:41,149 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7542857142857143 [2025-04-13 19:36:41,149 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 132 transitions. [2025-04-13 19:36:41,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 245 flow [2025-04-13 19:36:41,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:36:41,151 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2025-04-13 19:36:41,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2025-04-13 19:36:41,151 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2025-04-13 19:36:41,151 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2025-04-13 19:36:41,152 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 19:36:41,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:41,152 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] [2025-04-13 19:36:41,152 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:36:41,152 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:36:41,154 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1968436940, now seen corresponding path program 1 times [2025-04-13 19:36:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:41,154 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377971890] [2025-04-13 19:36:41,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:41,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-13 19:36:41,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 19:36:41,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:41,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:41,299 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 19:36:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:41,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377971890] [2025-04-13 19:36:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377971890] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:36:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193320031] [2025-04-13 19:36:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:41,299 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:36:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:41,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:36:41,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:36:41,303 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2025-04-13 19:36:41,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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 19:36:41,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:41,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2025-04-13 19:36:41,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:41,410 INFO L116 PetriNetUnfolderBase]: 174/326 cut-off events. [2025-04-13 19:36:41,411 INFO L117 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2025-04-13 19:36:41,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 326 events. 174/326 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1195 event pairs, 6 based on Foata normal form. 20/337 useless extension candidates. Maximal degree in co-relation 911. Up to 108 conditions per place. [2025-04-13 19:36:41,413 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 29 selfloop transitions, 11 changer transitions 1/56 dead transitions. [2025-04-13 19:36:41,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 272 flow [2025-04-13 19:36:41,414 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:36:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:36:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2025-04-13 19:36:41,415 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2025-04-13 19:36:41,415 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 151 transitions. [2025-04-13 19:36:41,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 272 flow [2025-04-13 19:36:41,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 247 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-13 19:36:41,419 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2025-04-13 19:36:41,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2025-04-13 19:36:41,420 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2025-04-13 19:36:41,420 INFO L485 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2025-04-13 19:36:41,420 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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 19:36:41,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:41,420 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] [2025-04-13 19:36:41,421 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:36:41,421 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:36:41,421 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1294905515, now seen corresponding path program 1 times [2025-04-13 19:36:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:41,421 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740550784] [2025-04-13 19:36:41,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:41,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 19:36:41,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 19:36:41,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:41,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:41,575 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 19:36:41,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:41,576 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740550784] [2025-04-13 19:36:41,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740550784] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:41,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:41,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:36:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134980012] [2025-04-13 19:36:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:41,576 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:36:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:41,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:36:41,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:36:41,588 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2025-04-13 19:36:41,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:36:41,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:41,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2025-04-13 19:36:41,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:41,809 INFO L116 PetriNetUnfolderBase]: 643/1278 cut-off events. [2025-04-13 19:36:41,809 INFO L117 PetriNetUnfolderBase]: For 719/729 co-relation queries the response was YES. [2025-04-13 19:36:41,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3026 conditions, 1278 events. 643/1278 cut-off events. For 719/729 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7647 event pairs, 146 based on Foata normal form. 16/1217 useless extension candidates. Maximal degree in co-relation 3011. Up to 326 conditions per place. [2025-04-13 19:36:41,815 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 27 selfloop transitions, 7 changer transitions 31/83 dead transitions. [2025-04-13 19:36:41,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 402 flow [2025-04-13 19:36:41,816 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 19:36:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 19:36:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2025-04-13 19:36:41,817 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2025-04-13 19:36:41,817 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 8 states and 187 transitions. [2025-04-13 19:36:41,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 402 flow [2025-04-13 19:36:41,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 330 flow, removed 18 selfloop flow, removed 8 redundant places. [2025-04-13 19:36:41,823 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 164 flow [2025-04-13 19:36:41,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2025-04-13 19:36:41,824 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2025-04-13 19:36:41,824 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 164 flow [2025-04-13 19:36:41,824 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:36:41,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:41,824 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] [2025-04-13 19:36:41,824 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:36:41,824 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:36:41,825 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash 408125013, now seen corresponding path program 2 times [2025-04-13 19:36:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:41,826 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30282231] [2025-04-13 19:36:41,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:36:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:41,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-04-13 19:36:41,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 19:36:41,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:36:41,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:41,958 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 19:36:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:41,958 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30282231] [2025-04-13 19:36:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30282231] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:41,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:41,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:36:41,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564861074] [2025-04-13 19:36:41,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:41,958 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:36:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:41,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:36:41,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:36:41,971 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2025-04-13 19:36:41,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:36:41,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:41,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2025-04-13 19:36:41,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:42,109 INFO L116 PetriNetUnfolderBase]: 514/1059 cut-off events. [2025-04-13 19:36:42,110 INFO L117 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2025-04-13 19:36:42,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 1059 events. 514/1059 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6337 event pairs, 83 based on Foata normal form. 8/1006 useless extension candidates. Maximal degree in co-relation 2633. Up to 336 conditions per place. [2025-04-13 19:36:42,114 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 31 selfloop transitions, 8 changer transitions 24/81 dead transitions. [2025-04-13 19:36:42,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 440 flow [2025-04-13 19:36:42,114 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 19:36:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 19:36:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2025-04-13 19:36:42,115 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6653061224489796 [2025-04-13 19:36:42,115 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 164 flow. Second operand 7 states and 163 transitions. [2025-04-13 19:36:42,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 440 flow [2025-04-13 19:36:42,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 416 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-04-13 19:36:42,118 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 214 flow [2025-04-13 19:36:42,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2025-04-13 19:36:42,119 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2025-04-13 19:36:42,119 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 214 flow [2025-04-13 19:36:42,119 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:36:42,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:42,119 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] [2025-04-13 19:36:42,119 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:36:42,120 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:36:42,120 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:42,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2101047053, now seen corresponding path program 3 times [2025-04-13 19:36:42,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:42,120 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76831431] [2025-04-13 19:36:42,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:36:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:42,125 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-04-13 19:36:42,130 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 19:36:42,131 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:36:42,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:42,267 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 19:36:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:42,268 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76831431] [2025-04-13 19:36:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76831431] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:42,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:36:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544074193] [2025-04-13 19:36:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:42,268 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:36:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:42,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:36:42,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:36:42,277 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2025-04-13 19:36:42,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:36:42,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:42,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2025-04-13 19:36:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:42,383 INFO L116 PetriNetUnfolderBase]: 352/741 cut-off events. [2025-04-13 19:36:42,383 INFO L117 PetriNetUnfolderBase]: For 899/899 co-relation queries the response was YES. [2025-04-13 19:36:42,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 741 events. 352/741 cut-off events. For 899/899 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4222 event pairs, 74 based on Foata normal form. 8/720 useless extension candidates. Maximal degree in co-relation 2125. Up to 389 conditions per place. [2025-04-13 19:36:42,386 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2025-04-13 19:36:42,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 344 flow [2025-04-13 19:36:42,387 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:36:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:36:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-04-13 19:36:42,387 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-04-13 19:36:42,387 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 214 flow. Second operand 5 states and 110 transitions. [2025-04-13 19:36:42,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 344 flow [2025-04-13 19:36:42,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 339 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:36:42,390 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2025-04-13 19:36:42,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2025-04-13 19:36:42,391 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2025-04-13 19:36:42,391 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2025-04-13 19:36:42,391 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:36:42,393 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 19:36:42,394 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 19:36:42,394 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 19:36:42,394 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 19:36:42,394 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:36:42,394 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-04-13 19:36:42,396 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:36:42,396 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:36:42,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:36:42 BasicIcfg [2025-04-13 19:36:42,402 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:36:42,402 INFO L158 Benchmark]: Toolchain (without parser) took 3030.56ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 92.0MB in the end (delta: 9.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2025-04-13 19:36:42,402 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:36:42,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.76ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 77.7MB in the end (delta: 23.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 19:36:42,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.66ms. Allocated memory is still 142.6MB. Free memory was 77.7MB in the beginning and 75.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:36:42,404 INFO L158 Benchmark]: Boogie Preprocessor took 34.58ms. Allocated memory is still 142.6MB. Free memory was 75.3MB in the beginning and 73.5MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:36:42,404 INFO L158 Benchmark]: RCFGBuilder took 290.26ms. Allocated memory is still 142.6MB. Free memory was 73.5MB in the beginning and 52.0MB in the end (delta: 21.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-13 19:36:42,404 INFO L158 Benchmark]: TraceAbstraction took 2227.80ms. Allocated memory is still 142.6MB. Free memory was 51.4MB in the beginning and 92.0MB in the end (delta: -40.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:36:42,405 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 439.76ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 77.7MB in the end (delta: 23.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.66ms. Allocated memory is still 142.6MB. Free memory was 77.7MB in the beginning and 75.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 34.58ms. Allocated memory is still 142.6MB. Free memory was 75.3MB in the beginning and 73.5MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 290.26ms. Allocated memory is still 142.6MB. Free memory was 73.5MB in the beginning and 52.0MB in the end (delta: 21.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2227.80ms. Allocated memory is still 142.6MB. Free memory was 51.4MB in the beginning and 92.0MB in the end (delta: -40.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 61 locations, 57 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 208 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 452 IncrementalHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 23 mSDtfsCounter, 452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=5, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:36:42,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...