./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8389c73a3873efed3be614e3a02a2457c4db9f1b1dfabf64c87229b49920fe65 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:58:39,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:58:39,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:58:39,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:58:39,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:58:39,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:58:39,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:58:39,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:58:39,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:58:39,666 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:58:39,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:58:39,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:58:39,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:58:39,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:58:39,667 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:58:39,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:58:39,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:58:39,669 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:58:39,669 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:58:39,669 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:58:39,669 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:58:39,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:58:39,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:58:39,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:58:39,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:58:39,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:58:39,670 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8389c73a3873efed3be614e3a02a2457c4db9f1b1dfabf64c87229b49920fe65 [2025-03-09 00:58:39,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:58:39,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:58:39,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:58:39,912 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:58:39,913 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:58:39,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2025-03-09 00:58:41,095 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478952300/0d13067482cd475fa31ad013d7d063c9/FLAG9568deeba [2025-03-09 00:58:41,378 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:58:41,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2025-03-09 00:58:41,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478952300/0d13067482cd475fa31ad013d7d063c9/FLAG9568deeba [2025-03-09 00:58:41,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478952300/0d13067482cd475fa31ad013d7d063c9 [2025-03-09 00:58:41,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:58:41,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:58:41,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:58:41,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:58:41,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:58:41,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eef1065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41, skipping insertion in model container [2025-03-09 00:58:41,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:58:41,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:58:41,664 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:58:41,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:58:41,750 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:58:41,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41 WrapperNode [2025-03-09 00:58:41,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:58:41,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:58:41,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:58:41,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:58:41,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,794 INFO L138 Inliner]: procedures = 173, calls = 62, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 468 [2025-03-09 00:58:41,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:58:41,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:58:41,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:58:41,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:58:41,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,832 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-03-09 00:58:41,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,846 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:58:41,852 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:58:41,852 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:58:41,852 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:58:41,853 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (1/1) ... [2025-03-09 00:58:41,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:58:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:58:41,875 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) [2025-03-09 00:58:41,877 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 [2025-03-09 00:58:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-09 00:58:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-09 00:58:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 00:58:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:58:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 00:58:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 00:58:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 00:58:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:58:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:58:41,894 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 00:58:41,999 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:58:42,001 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:58:42,297 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L726: havoc sysmon_power_daemon_task_#t~nondet17#1; [2025-03-09 00:58:42,398 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 00:58:42,398 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:58:42,777 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:58:42,777 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:58:42,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:58:42 BoogieIcfgContainer [2025-03-09 00:58:42,777 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:58:42,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:58:42,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:58:42,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:58:42,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:58:41" (1/3) ... [2025-03-09 00:58:42,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a0ab8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:58:42, skipping insertion in model container [2025-03-09 00:58:42,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:41" (2/3) ... [2025-03-09 00:58:42,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a0ab8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:58:42, skipping insertion in model container [2025-03-09 00:58:42,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:58:42" (3/3) ... [2025-03-09 00:58:42,788 INFO L128 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced-pthread.i [2025-03-09 00:58:42,800 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:58:42,801 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 43_NetBSD_sysmon_power_sliced-pthread.i that has 2 procedures, 153 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-03-09 00:58:42,802 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 00:58:42,885 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:58:42,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 201 transitions, 406 flow [2025-03-09 00:58:42,971 INFO L124 PetriNetUnfolderBase]: 48/205 cut-off events. [2025-03-09 00:58:42,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:42,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 205 events. 48/205 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 930 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 198. Up to 10 conditions per place. [2025-03-09 00:58:42,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 201 transitions, 406 flow [2025-03-09 00:58:42,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 201 transitions, 406 flow [2025-03-09 00:58:42,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:58:43,002 INFO L333 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=None, 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;@60bd0c06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:58:43,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2025-03-09 00:58:43,010 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:58:43,011 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:58:43,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:43,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:43,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:58:43,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err4ASSERT_VIOLATIONMEMORY_LEAK, thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (and 20 more)] === [2025-03-09 00:58:43,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:43,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1127776, now seen corresponding path program 1 times [2025-03-09 00:58:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:43,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563842843] [2025-03-09 00:58:43,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:43,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:43,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:58:43,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:58:43,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:43,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:58:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:58:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:58:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563842843] [2025-03-09 00:58:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563842843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:58:43,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:58:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:58:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617536917] [2025-03-09 00:58:43,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:58:43,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:58:43,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:58:43,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:58:43,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:58:43,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 201 [2025-03-09 00:58:43,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 201 transitions, 406 flow. Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 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) [2025-03-09 00:58:43,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:58:43,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 201 [2025-03-09 00:58:43,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:58:43,593 INFO L124 PetriNetUnfolderBase]: 131/345 cut-off events. [2025-03-09 00:58:43,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:43,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 345 events. 131/345 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1516 event pairs, 83 based on Foata normal form. 26/324 useless extension candidates. Maximal degree in co-relation 617. Up to 281 conditions per place. [2025-03-09 00:58:43,598 INFO L140 encePairwiseOnDemand]: 185/201 looper letters, 99 selfloop transitions, 0 changer transitions 0/132 dead transitions. [2025-03-09 00:58:43,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 132 transitions, 466 flow [2025-03-09 00:58:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:58:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 00:58:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 223 transitions. [2025-03-09 00:58:43,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.554726368159204 [2025-03-09 00:58:43,612 INFO L175 Difference]: Start difference. First operand has 156 places, 201 transitions, 406 flow. Second operand 2 states and 223 transitions. [2025-03-09 00:58:43,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 132 transitions, 466 flow [2025-03-09 00:58:43,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:58:43,619 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 268 flow [2025-03-09 00:58:43,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2025-03-09 00:58:43,624 INFO L279 CegarLoopForPetriNet]: 156 programPoint places, -44 predicate places. [2025-03-09 00:58:43,625 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 268 flow [2025-03-09 00:58:43,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 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) [2025-03-09 00:58:43,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:43,625 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-03-09 00:58:43,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 00:58:43,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err4ASSERT_VIOLATIONMEMORY_LEAK, thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (and 20 more)] === [2025-03-09 00:58:43,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1084172255, now seen corresponding path program 1 times [2025-03-09 00:58:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84397683] [2025-03-09 00:58:43,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:43,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:43,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:58:43,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:58:43,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:43,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:43,747 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 00:58:43,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:58:43,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:58:43,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:43,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:43,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 00:58:43,789 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 00:58:43,790 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (22 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (21 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (20 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (19 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (18 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (17 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (16 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (15 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (12 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (11 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (10 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (9 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (8 of 24 remaining) [2025-03-09 00:58:43,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (7 of 24 remaining) [2025-03-09 00:58:43,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (6 of 24 remaining) [2025-03-09 00:58:43,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2025-03-09 00:58:43,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (4 of 24 remaining) [2025-03-09 00:58:43,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (3 of 24 remaining) [2025-03-09 00:58:43,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 24 remaining) [2025-03-09 00:58:43,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 24 remaining) [2025-03-09 00:58:43,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2025-03-09 00:58:43,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 00:58:43,793 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 00:58:43,795 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 00:58:43,795 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 00:58:43,881 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:58:43,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 396 transitions, 802 flow [2025-03-09 00:58:43,957 INFO L124 PetriNetUnfolderBase]: 96/404 cut-off events. [2025-03-09 00:58:43,957 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 00:58:43,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 404 events. 96/404 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2418 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 392. Up to 10 conditions per place. [2025-03-09 00:58:43,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 396 transitions, 802 flow [2025-03-09 00:58:43,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 396 transitions, 802 flow [2025-03-09 00:58:43,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:58:43,977 INFO L333 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=None, 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;@60bd0c06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:58:43,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-03-09 00:58:43,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:58:43,983 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:58:43,983 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:43,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:43,983 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:58:43,983 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err4ASSERT_VIOLATIONMEMORY_LEAK, thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (and 31 more)] === [2025-03-09 00:58:43,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1521004, now seen corresponding path program 1 times [2025-03-09 00:58:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888127024] [2025-03-09 00:58:43,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:43,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:44,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:58:44,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:58:44,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:44,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:58:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:58:44,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:58:44,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888127024] [2025-03-09 00:58:44,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888127024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:58:44,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:58:44,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:58:44,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030478396] [2025-03-09 00:58:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:58:44,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:58:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:58:44,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:58:44,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:58:44,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 396 [2025-03-09 00:58:44,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 396 transitions, 802 flow. Second operand has 2 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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) [2025-03-09 00:58:44,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:58:44,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 396 [2025-03-09 00:58:44,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:58:46,891 INFO L124 PetriNetUnfolderBase]: 28394/47784 cut-off events. [2025-03-09 00:58:46,892 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2025-03-09 00:58:46,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88878 conditions, 47784 events. 28394/47784 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 395163 event pairs, 21626 based on Foata normal form. 4400/44502 useless extension candidates. Maximal degree in co-relation 86865. Up to 40834 conditions per place. [2025-03-09 00:58:47,144 INFO L140 encePairwiseOnDemand]: 365/396 looper letters, 196 selfloop transitions, 0 changer transitions 0/261 dead transitions. [2025-03-09 00:58:47,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 261 transitions, 924 flow [2025-03-09 00:58:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:58:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 00:58:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 439 transitions. [2025-03-09 00:58:47,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5542929292929293 [2025-03-09 00:58:47,148 INFO L175 Difference]: Start difference. First operand has 305 places, 396 transitions, 802 flow. Second operand 2 states and 439 transitions. [2025-03-09 00:58:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 261 transitions, 924 flow [2025-03-09 00:58:47,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 261 transitions, 924 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:58:47,152 INFO L231 Difference]: Finished difference. Result has 219 places, 261 transitions, 532 flow [2025-03-09 00:58:47,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=532, PETRI_PLACES=219, PETRI_TRANSITIONS=261} [2025-03-09 00:58:47,153 INFO L279 CegarLoopForPetriNet]: 305 programPoint places, -86 predicate places. [2025-03-09 00:58:47,153 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 261 transitions, 532 flow [2025-03-09 00:58:47,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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) [2025-03-09 00:58:47,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:47,153 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2025-03-09 00:58:47,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 00:58:47,153 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err4ASSERT_VIOLATIONMEMORY_LEAK, thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (and 31 more)] === [2025-03-09 00:58:47,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash 781119815, now seen corresponding path program 1 times [2025-03-09 00:58:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:47,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146752484] [2025-03-09 00:58:47,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:47,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:47,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:58:47,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:58:47,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:47,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:47,239 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 00:58:47,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:58:47,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:58:47,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:47,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:47,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 00:58:47,273 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (33 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (32 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (31 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (30 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (29 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (28 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (27 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (26 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (25 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (23 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (21 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (20 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (19 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (18 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (17 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (16 of 35 remaining) [2025-03-09 00:58:47,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (15 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (14 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (13 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (11 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (10 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (9 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (8 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (7 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (6 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (5 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (4 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (3 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 35 remaining) [2025-03-09 00:58:47,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (0 of 35 remaining) [2025-03-09 00:58:47,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 00:58:47,275 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 00:58:47,276 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 00:58:47,276 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 00:58:47,358 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:58:47,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 591 transitions, 1200 flow [2025-03-09 00:58:47,434 INFO L124 PetriNetUnfolderBase]: 144/603 cut-off events. [2025-03-09 00:58:47,434 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 00:58:47,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 603 events. 144/603 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4046 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 586. Up to 10 conditions per place. [2025-03-09 00:58:47,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 454 places, 591 transitions, 1200 flow [2025-03-09 00:58:47,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 591 transitions, 1200 flow [2025-03-09 00:58:47,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:58:47,464 INFO L333 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=None, 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;@60bd0c06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:58:47,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2025-03-09 00:58:47,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:58:47,467 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:58:47,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:47,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:47,467 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:58:47,467 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err4ASSERT_VIOLATIONMEMORY_LEAK, thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-09 00:58:47,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2107867, now seen corresponding path program 1 times [2025-03-09 00:58:47,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:47,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019638040] [2025-03-09 00:58:47,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:47,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:47,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:58:47,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:58:47,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:47,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:58:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:58:47,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:58:47,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019638040] [2025-03-09 00:58:47,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019638040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:58:47,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:58:47,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:58:47,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883249037] [2025-03-09 00:58:47,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:58:47,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:58:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:58:47,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:58:47,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:58:47,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 591 [2025-03-09 00:58:47,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 591 transitions, 1200 flow. Second operand has 2 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 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) [2025-03-09 00:58:47,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:58:47,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 591 [2025-03-09 00:58:47,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand