/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/safe019_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 19:36:55,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:36:55,599 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 19:36:55,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:36:55,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:36:55,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:36:55,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:36:55,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:36:55,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:36:55,630 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:36:55,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:36:55,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:36:55,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:36:55,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:36:55,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:36:55,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:36:55,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:36:55,632 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:36:55,633 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:55,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:55,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:36:55,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:36:55,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:36:55,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:36:55,634 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 19:36:55,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:36:55,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:36:55,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:36:55,867 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:36:55,867 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:36:55,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:57,142 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed6d076/9a102774c0954d4a8b44b9f3d59d1095/FLAG1ecb0c5b3 [2025-04-13 19:36:57,437 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:36:57,438 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:57,452 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed6d076/9a102774c0954d4a8b44b9f3d59d1095/FLAG1ecb0c5b3 [2025-04-13 19:36:58,144 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed6d076/9a102774c0954d4a8b44b9f3d59d1095 [2025-04-13 19:36:58,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:36:58,147 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:36:58,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:36:58,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:36:58,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:36:58,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e41ffc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58, skipping insertion in model container [2025-04-13 19:36:58,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:36:58,308 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:36:58,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:36:58,410 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:36:58,428 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:36:58,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:36:58,489 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:36:58,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58 WrapperNode [2025-04-13 19:36:58,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:36:58,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:36:58,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:36:58,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:36:58,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,531 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2025-04-13 19:36:58,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:36:58,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:36:58,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:36:58,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:36:58,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,554 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 19:36:58,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:36:58,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:36:58,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:36:58,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:36:58,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (1/1) ... [2025-04-13 19:36:58,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:58,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:36:58,597 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 19:36:58,602 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 19:36:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 19:36:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 19:36:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-13 19:36:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-04-13 19:36:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:36:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:36:58,618 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 19:36:58,721 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:36:58,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:36:58,859 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:36:58,860 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:36:58,860 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:36:58,951 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:36:58,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:36:58 BoogieIcfgContainer [2025-04-13 19:36:58,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:36:58,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:36:58,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:36:58,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:36:58,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:36:58" (1/3) ... [2025-04-13 19:36:58,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7987b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:36:58, skipping insertion in model container [2025-04-13 19:36:58,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:58" (2/3) ... [2025-04-13 19:36:58,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7987b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:36:58, skipping insertion in model container [2025-04-13 19:36:58,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:36:58" (3/3) ... [2025-04-13 19:36:58,959 INFO L128 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:58,970 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:36:58,971 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 5 procedures, 42 locations, 37 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:36:58,971 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:36:59,014 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:36:59,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 41 transitions, 98 flow [2025-04-13 19:36:59,065 INFO L116 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-04-13 19:36:59,066 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:36:59,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-13 19:36:59,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 41 transitions, 98 flow [2025-04-13 19:36:59,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 36 transitions, 84 flow [2025-04-13 19:36:59,074 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:36:59,081 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;@4eb558b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:36:59,081 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:36:59,092 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:36:59,092 INFO L116 PetriNetUnfolderBase]: 0/35 cut-off events. [2025-04-13 19:36:59,092 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:36:59,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:59,092 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:36:59,093 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 2 more)] === [2025-04-13 19:36:59,096 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1133098476, now seen corresponding path program 1 times [2025-04-13 19:36:59,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:59,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360863936] [2025-04-13 19:36:59,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:59,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:59,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:36:59,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:36:59,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:59,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:59,507 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 19:36:59,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:59,509 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360863936] [2025-04-13 19:36:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360863936] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:59,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:59,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:36:59,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378952747] [2025-04-13 19:36:59,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:59,516 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:36:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:59,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:36:59,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:36:59,561 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2025-04-13 19:36:59,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 19:36:59,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:59,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2025-04-13 19:36:59,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:59,870 INFO L116 PetriNetUnfolderBase]: 1260/1996 cut-off events. [2025-04-13 19:36:59,870 INFO L117 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-04-13 19:36:59,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 1996 events. 1260/1996 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 11442 event pairs, 340 based on Foata normal form. 81/2064 useless extension candidates. Maximal degree in co-relation 3892. Up to 936 conditions per place. [2025-04-13 19:36:59,886 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 33 selfloop transitions, 6 changer transitions 1/56 dead transitions. [2025-04-13 19:36:59,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 213 flow [2025-04-13 19:36:59,887 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:36:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:36:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-04-13 19:36:59,896 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7439024390243902 [2025-04-13 19:36:59,898 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 84 flow. Second operand 4 states and 122 transitions. [2025-04-13 19:36:59,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 213 flow [2025-04-13 19:36:59,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 206 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-13 19:36:59,907 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 122 flow [2025-04-13 19:36:59,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-04-13 19:36:59,912 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2025-04-13 19:36:59,913 INFO L485 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 122 flow [2025-04-13 19:36:59,913 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 19:36:59,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:59,913 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:36:59,913 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:36:59,913 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 2 more)] === [2025-04-13 19:36:59,914 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1137596758, now seen corresponding path program 1 times [2025-04-13 19:36:59,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:59,915 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121527560] [2025-04-13 19:36:59,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:59,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:59,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 19:36:59,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 19:36:59,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:59,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:00,058 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 19:37:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:00,058 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121527560] [2025-04-13 19:37:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121527560] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839614950] [2025-04-13 19:37:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:00,060 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:00,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:00,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:00,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:00,083 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2025-04-13 19:37:00,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 19:37:00,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:00,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2025-04-13 19:37:00,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:00,320 INFO L116 PetriNetUnfolderBase]: 1180/1875 cut-off events. [2025-04-13 19:37:00,320 INFO L117 PetriNetUnfolderBase]: For 638/643 co-relation queries the response was YES. [2025-04-13 19:37:00,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 1875 events. 1180/1875 cut-off events. For 638/643 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10377 event pairs, 132 based on Foata normal form. 82/1946 useless extension candidates. Maximal degree in co-relation 4618. Up to 856 conditions per place. [2025-04-13 19:37:00,329 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 42 selfloop transitions, 10 changer transitions 1/69 dead transitions. [2025-04-13 19:37:00,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 315 flow [2025-04-13 19:37:00,331 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2025-04-13 19:37:00,332 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7560975609756098 [2025-04-13 19:37:00,332 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 122 flow. Second operand 5 states and 155 transitions. [2025-04-13 19:37:00,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 315 flow [2025-04-13 19:37:00,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 304 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:00,334 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 174 flow [2025-04-13 19:37:00,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-04-13 19:37:00,335 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2025-04-13 19:37:00,335 INFO L485 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 174 flow [2025-04-13 19:37:00,336 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 19:37:00,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:00,336 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 19:37:00,336 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:37:00,336 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 2 more)] === [2025-04-13 19:37:00,337 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1620766700, now seen corresponding path program 1 times [2025-04-13 19:37:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:00,337 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892335635] [2025-04-13 19:37:00,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:00,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-13 19:37:00,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 19:37:00,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:00,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:00,490 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 19:37:00,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:00,491 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892335635] [2025-04-13 19:37:00,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892335635] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:00,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:00,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:37:00,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718311962] [2025-04-13 19:37:00,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:00,491 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:37:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:00,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:37:00,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:37:00,499 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2025-04-13 19:37:00,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 19:37:00,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:00,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2025-04-13 19:37:00,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:00,703 INFO L116 PetriNetUnfolderBase]: 960/1527 cut-off events. [2025-04-13 19:37:00,703 INFO L117 PetriNetUnfolderBase]: For 1498/1508 co-relation queries the response was YES. [2025-04-13 19:37:00,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 1527 events. 960/1527 cut-off events. For 1498/1508 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7674 event pairs, 36 based on Foata normal form. 76/1592 useless extension candidates. Maximal degree in co-relation 4326. Up to 592 conditions per place. [2025-04-13 19:37:00,712 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 49 selfloop transitions, 14 changer transitions 1/80 dead transitions. [2025-04-13 19:37:00,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 422 flow [2025-04-13 19:37:00,713 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:37:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:37:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2025-04-13 19:37:00,714 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7560975609756098 [2025-04-13 19:37:00,714 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 174 flow. Second operand 6 states and 186 transitions. [2025-04-13 19:37:00,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 422 flow [2025-04-13 19:37:00,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 80 transitions, 392 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-04-13 19:37:00,718 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 224 flow [2025-04-13 19:37:00,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-04-13 19:37:00,719 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2025-04-13 19:37:00,719 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 224 flow [2025-04-13 19:37:00,719 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 19:37:00,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:00,719 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] [2025-04-13 19:37:00,719 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:37:00,719 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 2 more)] === [2025-04-13 19:37:00,720 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2138528676, now seen corresponding path program 1 times [2025-04-13 19:37:00,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:00,720 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845695942] [2025-04-13 19:37:00,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:00,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:00,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 19:37:00,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 19:37:00,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:00,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:00,873 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 19:37:00,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:00,873 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845695942] [2025-04-13 19:37:00,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845695942] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:00,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:00,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 19:37:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227634619] [2025-04-13 19:37:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:00,874 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 19:37:00,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:00,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 19:37:00,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 19:37:00,890 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2025-04-13 19:37:00,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 19:37:00,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:00,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2025-04-13 19:37:00,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:01,094 INFO L116 PetriNetUnfolderBase]: 680/1063 cut-off events. [2025-04-13 19:37:01,095 INFO L117 PetriNetUnfolderBase]: For 1916/1926 co-relation queries the response was YES. [2025-04-13 19:37:01,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 1063 events. 680/1063 cut-off events. For 1916/1926 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4516 event pairs, 16 based on Foata normal form. 52/1104 useless extension candidates. Maximal degree in co-relation 3382. Up to 368 conditions per place. [2025-04-13 19:37:01,101 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 46 selfloop transitions, 18 changer transitions 1/81 dead transitions. [2025-04-13 19:37:01,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 436 flow [2025-04-13 19:37:01,102 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 19:37:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 19:37:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2025-04-13 19:37:01,103 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7212543554006968 [2025-04-13 19:37:01,103 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 224 flow. Second operand 7 states and 207 transitions. [2025-04-13 19:37:01,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 436 flow [2025-04-13 19:37:01,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 390 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-04-13 19:37:01,109 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 234 flow [2025-04-13 19:37:01,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=234, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2025-04-13 19:37:01,110 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2025-04-13 19:37:01,110 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 234 flow [2025-04-13 19:37:01,110 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 19:37:01,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:01,110 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] [2025-04-13 19:37:01,110 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:37:01,110 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 2 more)] === [2025-04-13 19:37:01,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash 42657619, now seen corresponding path program 1 times [2025-04-13 19:37:01,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:01,111 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979981778] [2025-04-13 19:37:01,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:01,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:01,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-04-13 19:37:01,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 19:37:01,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:01,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:01,290 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 19:37:01,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:01,290 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979981778] [2025-04-13 19:37:01,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979981778] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:01,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:01,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:01,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138955177] [2025-04-13 19:37:01,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:01,291 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:37:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:01,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:37:01,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:37:01,298 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2025-04-13 19:37:01,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 19:37:01,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:01,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2025-04-13 19:37:01,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:01,621 INFO L116 PetriNetUnfolderBase]: 2041/3612 cut-off events. [2025-04-13 19:37:01,622 INFO L117 PetriNetUnfolderBase]: For 2622/2723 co-relation queries the response was YES. [2025-04-13 19:37:01,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8962 conditions, 3612 events. 2041/3612 cut-off events. For 2622/2723 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24725 event pairs, 433 based on Foata normal form. 32/3349 useless extension candidates. Maximal degree in co-relation 8946. Up to 989 conditions per place. [2025-04-13 19:37:01,641 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 37 selfloop transitions, 6 changer transitions 17/87 dead transitions. [2025-04-13 19:37:01,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 456 flow [2025-04-13 19:37:01,641 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 19:37:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 19:37:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2025-04-13 19:37:01,642 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6794425087108014 [2025-04-13 19:37:01,642 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 234 flow. Second operand 7 states and 195 transitions. [2025-04-13 19:37:01,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 456 flow [2025-04-13 19:37:01,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 340 flow, removed 27 selfloop flow, removed 10 redundant places. [2025-04-13 19:37:01,664 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 180 flow [2025-04-13 19:37:01,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2025-04-13 19:37:01,665 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2025-04-13 19:37:01,665 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 180 flow [2025-04-13 19:37:01,665 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 19:37:01,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:01,665 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] [2025-04-13 19:37:01,665 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:37:01,665 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 2 more)] === [2025-04-13 19:37:01,666 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1214762689, now seen corresponding path program 2 times [2025-04-13 19:37:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:01,666 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206840121] [2025-04-13 19:37:01,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:37:01,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:01,672 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 1 equivalence classes. [2025-04-13 19:37:01,679 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 19:37:01,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:37:01,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:01,807 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 19:37:01,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:01,808 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206840121] [2025-04-13 19:37:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206840121] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:01,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:01,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316079830] [2025-04-13 19:37:01,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:01,808 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:01,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:01,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:01,820 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 41 [2025-04-13 19:37:01,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 19:37:01,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:01,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 41 [2025-04-13 19:37:01,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:02,007 INFO L116 PetriNetUnfolderBase]: 1508/2740 cut-off events. [2025-04-13 19:37:02,007 INFO L117 PetriNetUnfolderBase]: For 197/202 co-relation queries the response was YES. [2025-04-13 19:37:02,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 2740 events. 1508/2740 cut-off events. For 197/202 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 18650 event pairs, 480 based on Foata normal form. 16/2328 useless extension candidates. Maximal degree in co-relation 5495. Up to 871 conditions per place. [2025-04-13 19:37:02,059 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 29 selfloop transitions, 3 changer transitions 8/74 dead transitions. [2025-04-13 19:37:02,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 314 flow [2025-04-13 19:37:02,060 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2025-04-13 19:37:02,061 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7365853658536585 [2025-04-13 19:37:02,061 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 180 flow. Second operand 5 states and 151 transitions. [2025-04-13 19:37:02,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 314 flow [2025-04-13 19:37:02,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 303 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-04-13 19:37:02,063 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 187 flow [2025-04-13 19:37:02,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2025-04-13 19:37:02,064 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2025-04-13 19:37:02,065 INFO L485 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 187 flow [2025-04-13 19:37:02,065 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 19:37:02,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:02,065 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] [2025-04-13 19:37:02,065 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:37:02,065 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:37:02,066 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash 824442459, now seen corresponding path program 3 times [2025-04-13 19:37:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:02,066 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053835557] [2025-04-13 19:37:02,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:37:02,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:02,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 1 equivalence classes. [2025-04-13 19:37:02,082 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 19:37:02,082 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:37:02,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:02,192 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 19:37:02,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:02,192 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053835557] [2025-04-13 19:37:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053835557] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:02,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:02,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:37:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763508141] [2025-04-13 19:37:02,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:02,193 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:37:02,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:02,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:37:02,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:37:02,202 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2025-04-13 19:37:02,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 19:37:02,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:02,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2025-04-13 19:37:02,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:02,679 INFO L116 PetriNetUnfolderBase]: 3745/6811 cut-off events. [2025-04-13 19:37:02,680 INFO L117 PetriNetUnfolderBase]: For 785/785 co-relation queries the response was YES. [2025-04-13 19:37:02,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14238 conditions, 6811 events. 3745/6811 cut-off events. For 785/785 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 54594 event pairs, 681 based on Foata normal form. 48/6334 useless extension candidates. Maximal degree in co-relation 14221. Up to 1412 conditions per place. [2025-04-13 19:37:02,706 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 39 selfloop transitions, 6 changer transitions 29/101 dead transitions. [2025-04-13 19:37:02,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 465 flow [2025-04-13 19:37:02,707 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 19:37:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 19:37:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2025-04-13 19:37:02,707 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6612466124661247 [2025-04-13 19:37:02,707 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 187 flow. Second operand 9 states and 244 transitions. [2025-04-13 19:37:02,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 465 flow [2025-04-13 19:37:02,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 458 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-13 19:37:02,709 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 198 flow [2025-04-13 19:37:02,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-04-13 19:37:02,710 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2025-04-13 19:37:02,710 INFO L485 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 198 flow [2025-04-13 19:37:02,710 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 19:37:02,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:02,713 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] [2025-04-13 19:37:02,713 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 19:37:02,713 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:37:02,714 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash -394290995, now seen corresponding path program 4 times [2025-04-13 19:37:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:02,714 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820271775] [2025-04-13 19:37:02,714 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 19:37:02,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:02,723 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-04-13 19:37:02,729 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 19:37:02,730 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 19:37:02,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:02,808 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 19:37:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:02,808 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820271775] [2025-04-13 19:37:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820271775] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:02,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307450667] [2025-04-13 19:37:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:02,809 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:02,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:02,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:02,819 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 41 [2025-04-13 19:37:02,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 19:37:02,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:02,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 41 [2025-04-13 19:37:02,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:02,922 INFO L116 PetriNetUnfolderBase]: 637/1182 cut-off events. [2025-04-13 19:37:02,922 INFO L117 PetriNetUnfolderBase]: For 380/380 co-relation queries the response was YES. [2025-04-13 19:37:02,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2512 conditions, 1182 events. 637/1182 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6636 event pairs, 98 based on Foata normal form. 16/1059 useless extension candidates. Maximal degree in co-relation 2499. Up to 616 conditions per place. [2025-04-13 19:37:02,929 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2025-04-13 19:37:02,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 290 flow [2025-04-13 19:37:02,930 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2025-04-13 19:37:02,931 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2025-04-13 19:37:02,931 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 198 flow. Second operand 5 states and 143 transitions. [2025-04-13 19:37:02,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 290 flow [2025-04-13 19:37:02,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 259 flow, removed 7 selfloop flow, removed 8 redundant places. [2025-04-13 19:37:02,933 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2025-04-13 19:37:02,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2025-04-13 19:37:02,933 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2025-04-13 19:37:02,933 INFO L485 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2025-04-13 19:37:02,933 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 19:37:02,935 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-13 19:37:02,935 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-04-13 19:37:02,935 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 19:37:02,935 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-13 19:37:02,935 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-04-13 19:37:02,936 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-13 19:37:02,936 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2025-04-13 19:37:02,938 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:37:02,938 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:37:02,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:37:02 BasicIcfg [2025-04-13 19:37:02,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:37:02,941 INFO L158 Benchmark]: Toolchain (without parser) took 4794.93ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 97.7MB in the beginning and 138.3MB in the end (delta: -40.6MB). Peak memory consumption was 143.3MB. Max. memory is 8.0GB. [2025-04-13 19:37:02,942 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:02,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.66ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 74.3MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:02,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.55ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:02,942 INFO L158 Benchmark]: Boogie Preprocessor took 36.37ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 70.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:02,942 INFO L158 Benchmark]: RCFGBuilder took 379.14ms. Allocated memory is still 142.6MB. Free memory was 70.1MB in the beginning and 47.5MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 19:37:02,942 INFO L158 Benchmark]: TraceAbstraction took 3987.63ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 46.7MB in the beginning and 138.3MB in the end (delta: -91.6MB). Peak memory consumption was 92.9MB. Max. memory is 8.0GB. [2025-04-13 19:37:02,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 343.66ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 74.3MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.55ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 36.37ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 70.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 379.14ms. Allocated memory is still 142.6MB. Free memory was 70.1MB in the beginning and 47.5MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3987.63ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 46.7MB in the beginning and 138.3MB in the end (delta: -91.6MB). Peak memory consumption was 92.9MB. 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 9 procedures, 72 locations, 67 edges, 5 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: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 413 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 378 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 715 IncrementalHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 15 mSDtfsCounter, 715 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=4, InterpolantAutomatonStates: 48, 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, 1.2s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 19:37:02,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...