/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/safe018_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 19:36:46,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:36:46,881 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 19:36:46,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:36:46,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:36:46,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:36:46,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:36:46,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:36:46,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:36:46,907 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:36:46,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:36:46,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:36:46,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:36:46,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:36:46,907 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:36:46,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:36:46,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:36:46,909 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:36:46,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:36:46,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:36:46,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:36:46,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:36:46,910 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:36:46,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:46,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:46,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:36:46,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:36:46,911 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 19:36:47,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:36:47,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:36:47,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:36:47,121 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:36:47,122 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:36:47,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:48,436 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/318b9b1e7/fccc04fc1d4a43c2a0181e9bc2669781/FLAG6993a6aab [2025-04-13 19:36:48,696 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:36:48,696 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:48,713 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/318b9b1e7/fccc04fc1d4a43c2a0181e9bc2669781/FLAG6993a6aab [2025-04-13 19:36:49,638 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/318b9b1e7/fccc04fc1d4a43c2a0181e9bc2669781 [2025-04-13 19:36:49,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:36:49,641 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:36:49,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:36:49,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:36:49,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:36:49,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:36:49" (1/1) ... [2025-04-13 19:36:49,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d0ee1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:49, skipping insertion in model container [2025-04-13 19:36:49,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:36:49" (1/1) ... [2025-04-13 19:36:49,674 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:36:49,834 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:36:49,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:36:49,947 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:36:49,965 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:36:50,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:36:50,032 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:36:50,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50 WrapperNode [2025-04-13 19:36:50,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:36:50,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:36:50,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:36:50,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:36:50,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,060 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-04-13 19:36:50,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:36:50,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:36:50,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:36:50,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:36:50,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,079 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 19:36:50,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,087 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:36:50,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:36:50,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:36:50,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:36:50,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (1/1) ... [2025-04-13 19:36:50,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:36:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:36:50,122 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 19:36:50,126 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 19:36:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:36:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:36:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 19:36:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 19:36:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 19:36:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 19:36:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-13 19:36:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-13 19:36:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:36:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:36:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:36:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:36:50,147 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 19:36:50,246 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:36:50,248 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:36:50,381 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:36:50,382 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:36:50,382 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:36:50,462 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:36:50,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:36:50 BoogieIcfgContainer [2025-04-13 19:36:50,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:36:50,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:36:50,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:36:50,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:36:50,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:36:49" (1/3) ... [2025-04-13 19:36:50,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530a34f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:36:50, skipping insertion in model container [2025-04-13 19:36:50,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:36:50" (2/3) ... [2025-04-13 19:36:50,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530a34f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:36:50, skipping insertion in model container [2025-04-13 19:36:50,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:36:50" (3/3) ... [2025-04-13 19:36:50,468 INFO L128 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:36:50,481 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:36:50,482 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 34 locations, 30 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:36:50,482 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:36:50,524 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:36:50,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 33 transitions, 78 flow [2025-04-13 19:36:50,570 INFO L116 PetriNetUnfolderBase]: 0/30 cut-off events. [2025-04-13 19:36:50,574 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:36:50,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-13 19:36:50,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 33 transitions, 78 flow [2025-04-13 19:36:50,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 29 transitions, 67 flow [2025-04-13 19:36:50,591 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:36:50,602 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;@22a5090e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:36:50,602 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:36:50,615 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:36:50,615 INFO L116 PetriNetUnfolderBase]: 0/27 cut-off events. [2025-04-13 19:36:50,615 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:36:50,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:50,620 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:36:50,620 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 19:36:50,626 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash -119621059, now seen corresponding path program 1 times [2025-04-13 19:36:50,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:50,632 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217509861] [2025-04-13 19:36:50,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:50,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 19:36:50,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 19:36:50,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:50,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:50,964 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 19:36:50,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:50,966 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217509861] [2025-04-13 19:36:50,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217509861] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:50,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:50,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:36:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305650732] [2025-04-13 19:36:50,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:50,972 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:36:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:50,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:36:50,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:36:51,008 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2025-04-13 19:36:51,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:36:51,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:51,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2025-04-13 19:36:51,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:51,177 INFO L116 PetriNetUnfolderBase]: 291/538 cut-off events. [2025-04-13 19:36:51,177 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 19:36:51,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 538 events. 291/538 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2752 event pairs, 58 based on Foata normal form. 27/557 useless extension candidates. Maximal degree in co-relation 1033. Up to 236 conditions per place. [2025-04-13 19:36:51,186 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 25 selfloop transitions, 5 changer transitions 1/44 dead transitions. [2025-04-13 19:36:51,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 165 flow [2025-04-13 19:36:51,189 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:36:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:36:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2025-04-13 19:36:51,197 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-04-13 19:36:51,198 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 67 flow. Second operand 4 states and 97 transitions. [2025-04-13 19:36:51,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 165 flow [2025-04-13 19:36:51,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 19:36:51,204 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 98 flow [2025-04-13 19:36:51,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2025-04-13 19:36:51,210 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2025-04-13 19:36:51,210 INFO L485 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 98 flow [2025-04-13 19:36:51,211 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:36:51,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:51,211 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:36:51,211 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:36:51,211 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 19:36:51,212 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1798412293, now seen corresponding path program 1 times [2025-04-13 19:36:51,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:51,212 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957785078] [2025-04-13 19:36:51,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:51,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:51,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 19:36:51,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:36:51,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:51,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:51,365 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 19:36:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:51,366 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957785078] [2025-04-13 19:36:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957785078] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:51,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:51,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:36:51,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582272077] [2025-04-13 19:36:51,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:51,367 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:36:51,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:51,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:36:51,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:36:51,373 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2025-04-13 19:36:51,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:36:51,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:51,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2025-04-13 19:36:51,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:51,515 INFO L116 PetriNetUnfolderBase]: 249/465 cut-off events. [2025-04-13 19:36:51,515 INFO L117 PetriNetUnfolderBase]: For 173/176 co-relation queries the response was YES. [2025-04-13 19:36:51,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 465 events. 249/465 cut-off events. For 173/176 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2152 event pairs, 15 based on Foata normal form. 28/486 useless extension candidates. Maximal degree in co-relation 1131. Up to 188 conditions per place. [2025-04-13 19:36:51,518 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 31 selfloop transitions, 8 changer transitions 1/53 dead transitions. [2025-04-13 19:36:51,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 241 flow [2025-04-13 19:36:51,519 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:36:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:36:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2025-04-13 19:36:51,520 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2025-04-13 19:36:51,520 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 98 flow. Second operand 5 states and 122 transitions. [2025-04-13 19:36:51,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 241 flow [2025-04-13 19:36:51,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 231 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:36:51,521 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 138 flow [2025-04-13 19:36:51,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2025-04-13 19:36:51,522 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2025-04-13 19:36:51,522 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 138 flow [2025-04-13 19:36:51,522 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:36:51,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:51,522 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] [2025-04-13 19:36:51,522 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:36:51,522 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 19:36:51,523 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1918971521, now seen corresponding path program 1 times [2025-04-13 19:36:51,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:51,523 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128277623] [2025-04-13 19:36:51,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:51,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:51,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 19:36:51,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 19:36:51,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:51,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:51,619 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 19:36:51,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:51,619 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128277623] [2025-04-13 19:36:51,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128277623] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:51,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:51,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:36:51,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550484628] [2025-04-13 19:36:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:51,619 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:36:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:51,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:36:51,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:36:51,628 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2025-04-13 19:36:51,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 19:36:51,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:51,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2025-04-13 19:36:51,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:51,731 INFO L116 PetriNetUnfolderBase]: 174/324 cut-off events. [2025-04-13 19:36:51,731 INFO L117 PetriNetUnfolderBase]: For 358/364 co-relation queries the response was YES. [2025-04-13 19:36:51,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 324 events. 174/324 cut-off events. For 358/364 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1185 event pairs, 6 based on Foata normal form. 24/341 useless extension candidates. Maximal degree in co-relation 909. Up to 108 conditions per place. [2025-04-13 19:36:51,735 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 29 selfloop transitions, 11 changer transitions 1/54 dead transitions. [2025-04-13 19:36:51,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 268 flow [2025-04-13 19:36:51,736 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:36:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:36:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2025-04-13 19:36:51,737 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.702020202020202 [2025-04-13 19:36:51,737 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 138 flow. Second operand 6 states and 139 transitions. [2025-04-13 19:36:51,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 268 flow [2025-04-13 19:36:51,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 243 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-13 19:36:51,739 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 152 flow [2025-04-13 19:36:51,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2025-04-13 19:36:51,741 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2025-04-13 19:36:51,741 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 152 flow [2025-04-13 19:36:51,741 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 19:36:51,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:51,742 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] [2025-04-13 19:36:51,742 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:36:51,742 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 19:36:51,742 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1888793492, now seen corresponding path program 1 times [2025-04-13 19:36:51,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:51,742 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584381061] [2025-04-13 19:36:51,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:36:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:51,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 19:36:51,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 19:36:51,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:36:51,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:51,863 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 19:36:51,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:51,863 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584381061] [2025-04-13 19:36:51,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584381061] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:51,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:51,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:36:51,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481299997] [2025-04-13 19:36:51,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:51,864 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:36:51,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:51,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:36:51,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:36:51,874 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-04-13 19:36:51,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 19:36:51,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:51,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-04-13 19:36:51,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:51,970 INFO L116 PetriNetUnfolderBase]: 289/588 cut-off events. [2025-04-13 19:36:51,971 INFO L117 PetriNetUnfolderBase]: For 385/396 co-relation queries the response was YES. [2025-04-13 19:36:51,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 588 events. 289/588 cut-off events. For 385/396 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3049 event pairs, 131 based on Foata normal form. 8/544 useless extension candidates. Maximal degree in co-relation 1418. Up to 157 conditions per place. [2025-04-13 19:36:51,973 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 19 selfloop transitions, 3 changer transitions 10/50 dead transitions. [2025-04-13 19:36:51,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 254 flow [2025-04-13 19:36:51,973 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:36:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:36:51,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-04-13 19:36:51,974 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2025-04-13 19:36:51,974 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 152 flow. Second operand 5 states and 108 transitions. [2025-04-13 19:36:51,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 254 flow [2025-04-13 19:36:51,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 190 flow, removed 14 selfloop flow, removed 8 redundant places. [2025-04-13 19:36:51,976 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 108 flow [2025-04-13 19:36:51,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2025-04-13 19:36:51,977 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2025-04-13 19:36:51,977 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 108 flow [2025-04-13 19:36:51,977 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 19:36:51,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:51,977 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] [2025-04-13 19:36:51,977 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:36:51,977 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 19:36:51,978 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:51,978 INFO L85 PathProgramCache]: Analyzing trace with hash -492063540, now seen corresponding path program 2 times [2025-04-13 19:36:51,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:51,978 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295480323] [2025-04-13 19:36:51,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:36:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:51,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-04-13 19:36:51,992 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 19:36:51,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:36:51,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:52,089 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 19:36:52,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:52,089 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295480323] [2025-04-13 19:36:52,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295480323] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:52,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:52,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:36:52,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105631913] [2025-04-13 19:36:52,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:52,090 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:36:52,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:52,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:36:52,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:36:52,102 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-04-13 19:36:52,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 19:36:52,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:52,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-04-13 19:36:52,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:52,197 INFO L116 PetriNetUnfolderBase]: 260/544 cut-off events. [2025-04-13 19:36:52,198 INFO L117 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-04-13 19:36:52,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 544 events. 260/544 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2745 event pairs, 85 based on Foata normal form. 8/506 useless extension candidates. Maximal degree in co-relation 1109. Up to 169 conditions per place. [2025-04-13 19:36:52,201 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 19 selfloop transitions, 3 changer transitions 14/54 dead transitions. [2025-04-13 19:36:52,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 228 flow [2025-04-13 19:36:52,202 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:36:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:36:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2025-04-13 19:36:52,203 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2025-04-13 19:36:52,203 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 108 flow. Second operand 5 states and 112 transitions. [2025-04-13 19:36:52,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 228 flow [2025-04-13 19:36:52,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 212 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-04-13 19:36:52,204 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 110 flow [2025-04-13 19:36:52,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2025-04-13 19:36:52,204 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2025-04-13 19:36:52,205 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 110 flow [2025-04-13 19:36:52,205 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 19:36:52,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:36:52,205 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] [2025-04-13 19:36:52,205 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:36:52,205 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 19:36:52,207 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:36:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1612815930, now seen corresponding path program 3 times [2025-04-13 19:36:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:36:52,207 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658906078] [2025-04-13 19:36:52,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:36:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:36:52,216 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-04-13 19:36:52,229 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 19:36:52,229 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:36:52,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:36:52,323 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 19:36:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:36:52,323 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658906078] [2025-04-13 19:36:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658906078] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:36:52,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:36:52,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:36:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11982019] [2025-04-13 19:36:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:36:52,325 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:36:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:36:52,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:36:52,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:36:52,330 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2025-04-13 19:36:52,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 19:36:52,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:36:52,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2025-04-13 19:36:52,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:36:52,388 INFO L116 PetriNetUnfolderBase]: 85/209 cut-off events. [2025-04-13 19:36:52,388 INFO L117 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-04-13 19:36:52,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 209 events. 85/209 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 743 event pairs, 6 based on Foata normal form. 8/203 useless extension candidates. Maximal degree in co-relation 415. Up to 84 conditions per place. [2025-04-13 19:36:52,389 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2025-04-13 19:36:52,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 172 flow [2025-04-13 19:36:52,389 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:36:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:36:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-04-13 19:36:52,390 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6606060606060606 [2025-04-13 19:36:52,390 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 110 flow. Second operand 5 states and 109 transitions. [2025-04-13 19:36:52,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 172 flow [2025-04-13 19:36:52,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 164 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-13 19:36:52,391 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2025-04-13 19:36:52,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2025-04-13 19:36:52,391 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2025-04-13 19:36:52,391 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2025-04-13 19:36:52,392 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 19:36:52,393 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 19:36:52,394 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 19:36:52,394 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 19:36:52,394 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 19:36:52,394 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:36:52,394 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-04-13 19:36:52,396 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:36:52,396 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:36:52,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:36:52 BasicIcfg [2025-04-13 19:36:52,400 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:36:52,400 INFO L158 Benchmark]: Toolchain (without parser) took 2759.45ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 80.3MB in the end (delta: 19.4MB). Peak memory consumption was 19.8MB. Max. memory is 8.0GB. [2025-04-13 19:36:52,400 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:36:52,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.91ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 76.5MB in the end (delta: 23.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 19:36:52,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.62ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 74.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:36:52,401 INFO L158 Benchmark]: Boogie Preprocessor took 33.73ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:36:52,401 INFO L158 Benchmark]: RCFGBuilder took 367.81ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 50.4MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 19:36:52,401 INFO L158 Benchmark]: TraceAbstraction took 1936.36ms. Allocated memory is still 142.6MB. Free memory was 50.4MB in the beginning and 80.3MB in the end (delta: -29.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:36:52,402 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 390.91ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 76.5MB in the end (delta: 23.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.62ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 74.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.73ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 367.81ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 50.4MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 1936.36ms. Allocated memory is still 142.6MB. Free memory was 50.4MB in the beginning and 80.3MB in the end (delta: -29.8MB). 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, 57 locations, 53 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: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 231 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 351 IncrementalHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 12 mSDtfsCounter, 351 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 0.8s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 551 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 19:36:52,414 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...