./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.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.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 0cc2344d8bedffb786f66d288e651407abc416f1e22d065ca4595f05e214f2a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:58:40,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:58:40,292 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:58:40,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:58:40,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:58:40,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:58:40,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:58:40,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:58:40,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:58:40,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:58:40,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:58:40,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:58:40,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:58:40,312 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:58:40,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:58:40,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:58:40,313 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:58:40,313 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:58:40,313 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:58:40,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:58:40,313 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 -> 0cc2344d8bedffb786f66d288e651407abc416f1e22d065ca4595f05e214f2a3 [2025-03-09 00:58:40,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:58:40,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:58:40,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:58:40,573 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:58:40,574 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:58:40,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i [2025-03-09 00:58:41,753 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e119df55/1e56426e6cd54239b1e6925f58567761/FLAGbefeb31bc [2025-03-09 00:58:42,044 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:58:42,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i [2025-03-09 00:58:42,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e119df55/1e56426e6cd54239b1e6925f58567761/FLAGbefeb31bc [2025-03-09 00:58:42,330 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e119df55/1e56426e6cd54239b1e6925f58567761 [2025-03-09 00:58:42,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:58:42,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:58:42,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:58:42,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:58:42,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:58:42,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e40e56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42, skipping insertion in model container [2025-03-09 00:58:42,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:58:42,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:58:42,593 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:58:42,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:58:42,693 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:58:42,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42 WrapperNode [2025-03-09 00:58:42,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:58:42,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:58:42,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:58:42,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:58:42,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,746 INFO L138 Inliner]: procedures = 180, calls = 59, calls flagged for inlining = 54, calls inlined = 79, statements flattened = 472 [2025-03-09 00:58:42,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:58:42,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:58:42,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:58:42,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:58:42,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,772 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]. [2025-03-09 00:58:42,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,780 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:58:42,799 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:58:42,799 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:58:42,799 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:58:42,803 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (1/1) ... [2025-03-09 00:58:42,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:58:42,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:58:42,841 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 00:58:42,843 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 00:58:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-09 00:58:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-09 00:58:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:58:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 00:58:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:58:42,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:58:42,865 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 00:58:42,975 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:58:42,977 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:58:43,520 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L741: havoc sysmon_power_daemon_task_#t~nondet13#1; [2025-03-09 00:58:43,546 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 00:58:43,546 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:58:43,751 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:58:43,752 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:58:43,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:58:43 BoogieIcfgContainer [2025-03-09 00:58:43,752 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:58:43,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:58:43,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:58:43,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:58:43,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:58:42" (1/3) ... [2025-03-09 00:58:43,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186f83c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:58:43, skipping insertion in model container [2025-03-09 00:58:43,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:58:42" (2/3) ... [2025-03-09 00:58:43,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186f83c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:58:43, skipping insertion in model container [2025-03-09 00:58:43,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:58:43" (3/3) ... [2025-03-09 00:58:43,777 INFO L128 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced.i [2025-03-09 00:58:43,793 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:58:43,794 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 43_NetBSD_sysmon_power_sliced.i that has 2 procedures, 159 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-09 00:58:43,794 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 00:58:43,851 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:58:43,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 223 transitions, 450 flow [2025-03-09 00:58:43,921 INFO L124 PetriNetUnfolderBase]: 64/227 cut-off events. [2025-03-09 00:58:43,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:43,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 227 events. 64/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1007 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 220. Up to 10 conditions per place. [2025-03-09 00:58:43,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 223 transitions, 450 flow [2025-03-09 00:58:43,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 223 transitions, 450 flow [2025-03-09 00:58:43,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:58:43,948 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;@6e60a776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:58:43,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2025-03-09 00:58:43,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:58:43,951 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:58:43,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:43,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:43,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:58:43,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err9ASSERT_VIOLATIONMEMORY_LEAK, thr1Err7ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (and 20 more)] === [2025-03-09 00:58:43,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1302306, now seen corresponding path program 1 times [2025-03-09 00:58:43,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:43,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519872180] [2025-03-09 00:58:43,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:44,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:58:44,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:58:44,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:44,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:58:44,057 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 00:58:44,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:58:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519872180] [2025-03-09 00:58:44,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519872180] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:58:44,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:58:44,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:58:44,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98949935] [2025-03-09 00:58:44,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:58:44,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:58:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:58:44,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:58:44,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:58:44,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2025-03-09 00:58:44,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 223 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 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 00:58:44,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:58:44,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2025-03-09 00:58:44,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:58:44,246 INFO L124 PetriNetUnfolderBase]: 125/411 cut-off events. [2025-03-09 00:58:44,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:44,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 411 events. 125/411 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2286 event pairs, 65 based on Foata normal form. 66/420 useless extension candidates. Maximal degree in co-relation 627. Up to 225 conditions per place. [2025-03-09 00:58:44,252 INFO L140 encePairwiseOnDemand]: 187/223 looper letters, 80 selfloop transitions, 0 changer transitions 0/174 dead transitions. [2025-03-09 00:58:44,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 174 transitions, 512 flow [2025-03-09 00:58:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:58:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 00:58:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 306 transitions. [2025-03-09 00:58:44,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6860986547085202 [2025-03-09 00:58:44,264 INFO L175 Difference]: Start difference. First operand has 162 places, 223 transitions, 450 flow. Second operand 2 states and 306 transitions. [2025-03-09 00:58:44,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 174 transitions, 512 flow [2025-03-09 00:58:44,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 174 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:58:44,278 INFO L231 Difference]: Finished difference. Result has 148 places, 174 transitions, 352 flow [2025-03-09 00:58:44,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=352, PETRI_PLACES=148, PETRI_TRANSITIONS=174} [2025-03-09 00:58:44,283 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -14 predicate places. [2025-03-09 00:58:44,285 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 174 transitions, 352 flow [2025-03-09 00:58:44,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 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 00:58:44,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:44,285 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-03-09 00:58:44,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 00:58:44,286 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err9ASSERT_VIOLATIONMEMORY_LEAK, thr1Err7ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (and 20 more)] === [2025-03-09 00:58:44,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:44,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1251861534, now seen corresponding path program 1 times [2025-03-09 00:58:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136864466] [2025-03-09 00:58:44,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:44,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:58:44,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:58:44,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:44,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:44,314 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 00:58:44,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:58:44,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:58:44,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:44,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:44,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 00:58:44,338 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 00:58:44,339 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (22 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (21 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (20 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (19 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (18 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (17 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (16 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (15 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (14 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (13 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (11 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (10 of 24 remaining) [2025-03-09 00:58:44,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (9 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (8 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (7 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (6 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (4 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (3 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (2 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 24 remaining) [2025-03-09 00:58:44,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2025-03-09 00:58:44,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 00:58:44,343 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 00:58:44,345 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 00:58:44,345 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 00:58:44,407 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:58:44,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 440 transitions, 890 flow [2025-03-09 00:58:44,493 INFO L124 PetriNetUnfolderBase]: 128/448 cut-off events. [2025-03-09 00:58:44,493 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 00:58:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 448 events. 128/448 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2573 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 436. Up to 10 conditions per place. [2025-03-09 00:58:44,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 440 transitions, 890 flow [2025-03-09 00:58:44,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 440 transitions, 890 flow [2025-03-09 00:58:44,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:58:44,511 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;@6e60a776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:58:44,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-03-09 00:58:44,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:58:44,513 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:58:44,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:44,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:44,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:58:44,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err9ASSERT_VIOLATIONMEMORY_LEAK, thr1Err7ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (and 31 more)] === [2025-03-09 00:58:44,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1739226, now seen corresponding path program 1 times [2025-03-09 00:58:44,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:44,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872351758] [2025-03-09 00:58:44,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:44,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:44,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:58:44,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:58:44,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:44,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:58:44,531 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 00:58:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:58:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872351758] [2025-03-09 00:58:44,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872351758] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:58:44,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:58:44,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:58:44,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493396689] [2025-03-09 00:58:44,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:58:44,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:58:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:58:44,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:58:44,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:58:44,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 440 [2025-03-09 00:58:44,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 440 transitions, 890 flow. Second operand has 2 states, 2 states have (on average 189.0) internal successors, (378), 2 states have internal predecessors, (378), 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 00:58:44,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:58:44,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 440 [2025-03-09 00:58:44,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:58:47,080 INFO L124 PetriNetUnfolderBase]: 18959/39069 cut-off events. [2025-03-09 00:58:47,080 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2025-03-09 00:58:47,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65274 conditions, 39069 events. 18959/39069 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 1785. Compared 404955 event pairs, 13409 based on Foata normal form. 9124/41949 useless extension candidates. Maximal degree in co-relation 63403. Up to 25999 conditions per place. [2025-03-09 00:58:47,346 INFO L140 encePairwiseOnDemand]: 369/440 looper letters, 158 selfloop transitions, 0 changer transitions 0/345 dead transitions. [2025-03-09 00:58:47,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 345 transitions, 1016 flow [2025-03-09 00:58:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:58:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 00:58:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 605 transitions. [2025-03-09 00:58:47,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-03-09 00:58:47,354 INFO L175 Difference]: Start difference. First operand has 317 places, 440 transitions, 890 flow. Second operand 2 states and 605 transitions. [2025-03-09 00:58:47,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 345 transitions, 1016 flow [2025-03-09 00:58:47,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 345 transitions, 1016 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:58:47,363 INFO L231 Difference]: Finished difference. Result has 291 places, 345 transitions, 700 flow [2025-03-09 00:58:47,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=700, PETRI_PLACES=291, PETRI_TRANSITIONS=345} [2025-03-09 00:58:47,364 INFO L279 CegarLoopForPetriNet]: 317 programPoint places, -26 predicate places. [2025-03-09 00:58:47,364 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 345 transitions, 700 flow [2025-03-09 00:58:47,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 189.0) internal successors, (378), 2 states have internal predecessors, (378), 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 00:58:47,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:47,365 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2025-03-09 00:58:47,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 00:58:47,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err9ASSERT_VIOLATIONMEMORY_LEAK, thr1Err7ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (and 31 more)] === [2025-03-09 00:58:47,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash 439234909, now seen corresponding path program 1 times [2025-03-09 00:58:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:47,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892035950] [2025-03-09 00:58:47,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:47,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:58:47,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:58:47,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:47,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:47,390 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 00:58:47,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:58:47,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:58:47,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:47,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:58:47,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 00:58:47,414 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 00:58:47,414 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2025-03-09 00:58:47,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (33 of 35 remaining) [2025-03-09 00:58:47,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (32 of 35 remaining) [2025-03-09 00:58:47,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (31 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (30 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (29 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (28 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (27 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (26 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (25 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (24 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (23 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (21 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (20 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (19 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (18 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (17 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (16 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (15 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (14 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (13 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (12 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (10 of 35 remaining) [2025-03-09 00:58:47,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (9 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (8 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (7 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (6 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (5 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (4 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (3 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (2 of 35 remaining) [2025-03-09 00:58:47,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 35 remaining) [2025-03-09 00:58:47,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 35 remaining) [2025-03-09 00:58:47,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 00:58:47,420 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 00:58:47,420 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 00:58:47,420 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 00:58:47,506 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:58:47,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 657 transitions, 1332 flow [2025-03-09 00:58:47,626 INFO L124 PetriNetUnfolderBase]: 192/669 cut-off events. [2025-03-09 00:58:47,627 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 00:58:47,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 669 events. 192/669 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4347 event pairs, 0 based on Foata normal form. 0/436 useless extension candidates. Maximal degree in co-relation 652. Up to 10 conditions per place. [2025-03-09 00:58:47,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 657 transitions, 1332 flow [2025-03-09 00:58:47,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 472 places, 657 transitions, 1332 flow [2025-03-09 00:58:47,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:58:47,666 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;@6e60a776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:58:47,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2025-03-09 00:58:47,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:58:47,667 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:58:47,667 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:58:47,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:58:47,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:58:47,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err8ASSERT_VIOLATIONMEMORY_LEAK, thr1Err9ASSERT_VIOLATIONMEMORY_LEAK, thr1Err7ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-09 00:58:47,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:58:47,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2391627, now seen corresponding path program 1 times [2025-03-09 00:58:47,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:58:47,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344901990] [2025-03-09 00:58:47,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:58:47,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:58:47,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:58:47,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:58:47,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:58:47,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:58:47,696 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 00:58:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:58:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344901990] [2025-03-09 00:58:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344901990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:58:47,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:58:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:58:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747278644] [2025-03-09 00:58:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:58:47,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:58:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:58:47,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:58:47,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:58:47,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 657 [2025-03-09 00:58:47,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 657 transitions, 1332 flow. Second operand has 2 states, 2 states have (on average 282.0) internal successors, (564), 2 states have internal predecessors, (564), 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 00:58:47,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:58:47,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 657 [2025-03-09 00:58:47,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand