./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:10:12,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:10:12,530 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:10:12,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:10:12,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:10:12,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:10:12,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:10:12,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:10:12,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:10:12,563 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:10:12,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:10:12,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:10:12,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:10:12,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:10:12,564 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:10:12,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:10:12,564 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:10:12,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:10:12,565 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:10:12,566 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:10:12,566 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:10:12,566 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:10:12,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:10:12,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:10:12,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:10:12,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:10:12,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:10:12,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:10:12,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:10:12,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:10:12,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:10:12,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:10:12,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:10:12,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:10:12,567 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-jdk21/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 -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2025-02-06 13:10:12,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:10:12,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:10:12,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:10:12,865 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:10:12,865 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:10:12,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2025-02-06 13:10:14,163 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df29e50fc/6ac9213372a14cfeb4b0e4fb37e80ca2/FLAG355a1da7e [2025-02-06 13:10:14,406 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:10:14,407 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2025-02-06 13:10:14,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df29e50fc/6ac9213372a14cfeb4b0e4fb37e80ca2/FLAG355a1da7e [2025-02-06 13:10:14,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df29e50fc/6ac9213372a14cfeb4b0e4fb37e80ca2 [2025-02-06 13:10:14,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:10:14,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:10:14,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:10:14,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:10:14,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:10:14,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:14,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b5fcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14, skipping insertion in model container [2025-02-06 13:10:14,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:14,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:10:14,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:10:14,930 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:10:14,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:10:14,972 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:10:14,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14 WrapperNode [2025-02-06 13:10:14,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:10:14,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:10:14,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:10:14,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:10:14,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:14,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,009 INFO L138 Inliner]: procedures = 22, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 94 [2025-02-06 13:10:15,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:10:15,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:10:15,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:10:15,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:10:15,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,041 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]. [2025-02-06 13:10:15,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,048 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:10:15,057 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:10:15,057 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:10:15,057 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:10:15,058 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (1/1) ... [2025-02-06 13:10:15,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:10:15,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:15,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:10:15,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:10:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:10:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:10:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:10:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:10:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:10:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 13:10:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 13:10:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 13:10:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 13:10:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:10:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 13:10:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 13:10:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:10:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:10:15,110 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:10:15,201 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:10:15,203 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:10:15,412 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:10:15,413 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:10:15,542 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:10:15,542 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:10:15,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:10:15 BoogieIcfgContainer [2025-02-06 13:10:15,543 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:10:15,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:10:15,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:10:15,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:10:15,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:10:14" (1/3) ... [2025-02-06 13:10:15,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a80751d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:10:15, skipping insertion in model container [2025-02-06 13:10:15,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:14" (2/3) ... [2025-02-06 13:10:15,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a80751d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:10:15, skipping insertion in model container [2025-02-06 13:10:15,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:10:15" (3/3) ... [2025-02-06 13:10:15,554 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2025-02-06 13:10:15,567 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:10:15,569 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-mult-4.wvr.c that has 5 procedures, 39 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-02-06 13:10:15,569 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:10:15,649 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 13:10:15,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2025-02-06 13:10:15,722 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2025-02-06 13:10:15,724 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:10:15,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-06 13:10:15,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2025-02-06 13:10:15,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2025-02-06 13:10:15,737 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:10:15,751 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;@4ee359d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:10:15,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 13:10:15,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:10:15,765 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-06 13:10:15,765 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:10:15,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:15,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:15,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:15,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -161517360, now seen corresponding path program 1 times [2025-02-06 13:10:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:15,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58381909] [2025-02-06 13:10:15,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:15,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:15,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 13:10:15,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:10:15,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:15,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:16,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58381909] [2025-02-06 13:10:16,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58381909] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:16,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:16,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:10:16,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725046846] [2025-02-06 13:10:16,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:16,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:10:16,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:16,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:10:16,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:10:16,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2025-02-06 13:10:16,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2025-02-06 13:10:16,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:16,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2025-02-06 13:10:16,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:16,769 INFO L124 PetriNetUnfolderBase]: 3042/4231 cut-off events. [2025-02-06 13:10:16,770 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2025-02-06 13:10:16,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8631 conditions, 4231 events. 3042/4231 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18767 event pairs, 763 based on Foata normal form. 153/4374 useless extension candidates. Maximal degree in co-relation 7625. Up to 3203 conditions per place. [2025-02-06 13:10:16,814 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2025-02-06 13:10:16,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2025-02-06 13:10:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:10:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:10:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2025-02-06 13:10:16,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2025-02-06 13:10:16,832 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2025-02-06 13:10:16,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2025-02-06 13:10:16,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 13:10:16,849 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2025-02-06 13:10:16,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2025-02-06 13:10:16,857 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2025-02-06 13:10:16,857 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2025-02-06 13:10:16,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2025-02-06 13:10:16,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:16,858 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:16,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:10:16,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:16,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:16,860 INFO L85 PathProgramCache]: Analyzing trace with hash 271092807, now seen corresponding path program 1 times [2025-02-06 13:10:16,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:16,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170539157] [2025-02-06 13:10:16,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:16,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:16,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:10:16,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:16,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:16,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170539157] [2025-02-06 13:10:17,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170539157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:17,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:17,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:10:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091385330] [2025-02-06 13:10:17,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:17,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:10:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:17,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:10:17,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:10:17,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:17,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:17,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:17,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:17,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:18,472 INFO L124 PetriNetUnfolderBase]: 13495/17583 cut-off events. [2025-02-06 13:10:18,472 INFO L125 PetriNetUnfolderBase]: For 1786/1786 co-relation queries the response was YES. [2025-02-06 13:10:18,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39169 conditions, 17583 events. 13495/17583 cut-off events. For 1786/1786 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 83188 event pairs, 4626 based on Foata normal form. 0/14230 useless extension candidates. Maximal degree in co-relation 7257. Up to 9386 conditions per place. [2025-02-06 13:10:18,575 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 96 selfloop transitions, 10 changer transitions 0/107 dead transitions. [2025-02-06 13:10:18,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 107 transitions, 497 flow [2025-02-06 13:10:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:10:18,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:10:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-02-06 13:10:18,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-06 13:10:18,579 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 132 transitions. [2025-02-06 13:10:18,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 107 transitions, 497 flow [2025-02-06 13:10:18,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 107 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:10:18,583 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2025-02-06 13:10:18,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2025-02-06 13:10:18,586 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2025-02-06 13:10:18,586 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2025-02-06 13:10:18,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:18,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:18,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:18,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:10:18,587 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:18,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -897201155, now seen corresponding path program 2 times [2025-02-06 13:10:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:18,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283296733] [2025-02-06 13:10:18,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:18,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:18,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:10:18,618 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:18,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:18,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:18,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283296733] [2025-02-06 13:10:18,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283296733] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:18,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:18,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 13:10:18,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548806125] [2025-02-06 13:10:18,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:18,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:10:18,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:18,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:10:18,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:10:18,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:18,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-06 13:10:18,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:18,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:18,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:20,336 INFO L124 PetriNetUnfolderBase]: 20850/27089 cut-off events. [2025-02-06 13:10:20,337 INFO L125 PetriNetUnfolderBase]: For 12295/12295 co-relation queries the response was YES. [2025-02-06 13:10:20,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72903 conditions, 27089 events. 20850/27089 cut-off events. For 12295/12295 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 133690 event pairs, 3494 based on Foata normal form. 760/27849 useless extension candidates. Maximal degree in co-relation 42442. Up to 16632 conditions per place. [2025-02-06 13:10:20,509 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 93 selfloop transitions, 8 changer transitions 2/104 dead transitions. [2025-02-06 13:10:20,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 104 transitions, 570 flow [2025-02-06 13:10:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:10:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:10:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-02-06 13:10:20,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2025-02-06 13:10:20,512 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 106 transitions. [2025-02-06 13:10:20,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 104 transitions, 570 flow [2025-02-06 13:10:20,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 104 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:10:20,523 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 251 flow [2025-02-06 13:10:20,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2025-02-06 13:10:20,526 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-02-06 13:10:20,526 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 251 flow [2025-02-06 13:10:20,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-06 13:10:20,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:20,526 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:20,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:10:20,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:20,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1429514405, now seen corresponding path program 3 times [2025-02-06 13:10:20,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:20,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113776182] [2025-02-06 13:10:20,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:20,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:20,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:10:20,565 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:20,567 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:20,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113776182] [2025-02-06 13:10:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113776182] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:20,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:20,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 13:10:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321624762] [2025-02-06 13:10:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:20,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:10:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:20,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:10:20,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:10:20,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:20,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-06 13:10:20,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:20,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:20,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:22,357 INFO L124 PetriNetUnfolderBase]: 27113/35301 cut-off events. [2025-02-06 13:10:22,358 INFO L125 PetriNetUnfolderBase]: For 34240/34240 co-relation queries the response was YES. [2025-02-06 13:10:22,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106392 conditions, 35301 events. 27113/35301 cut-off events. For 34240/34240 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 177868 event pairs, 7966 based on Foata normal form. 432/35733 useless extension candidates. Maximal degree in co-relation 39884. Up to 19571 conditions per place. [2025-02-06 13:10:22,559 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 101 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2025-02-06 13:10:22,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 112 transitions, 688 flow [2025-02-06 13:10:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:10:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:10:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2025-02-06 13:10:22,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-02-06 13:10:22,561 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 251 flow. Second operand 4 states and 108 transitions. [2025-02-06 13:10:22,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 112 transitions, 688 flow [2025-02-06 13:10:22,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 112 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:10:22,579 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 311 flow [2025-02-06 13:10:22,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2025-02-06 13:10:22,581 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2025-02-06 13:10:22,582 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 311 flow [2025-02-06 13:10:22,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-06 13:10:22,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:22,582 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:22,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:10:22,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:22,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 334284347, now seen corresponding path program 1 times [2025-02-06 13:10:22,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743489238] [2025-02-06 13:10:22,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:22,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:10:22,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:22,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:22,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743489238] [2025-02-06 13:10:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743489238] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:22,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:22,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:10:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035733065] [2025-02-06 13:10:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:22,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:10:22,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:22,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:10:22,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:10:22,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:22,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:22,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:22,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:22,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:24,714 INFO L124 PetriNetUnfolderBase]: 28674/37800 cut-off events. [2025-02-06 13:10:24,714 INFO L125 PetriNetUnfolderBase]: For 69371/69371 co-relation queries the response was YES. [2025-02-06 13:10:24,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123754 conditions, 37800 events. 28674/37800 cut-off events. For 69371/69371 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 202784 event pairs, 8683 based on Foata normal form. 778/38578 useless extension candidates. Maximal degree in co-relation 52637. Up to 17888 conditions per place. [2025-02-06 13:10:25,069 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 100 selfloop transitions, 7 changer transitions 18/126 dead transitions. [2025-02-06 13:10:25,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 126 transitions, 886 flow [2025-02-06 13:10:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:10:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:10:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-02-06 13:10:25,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 13:10:25,071 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 311 flow. Second operand 5 states and 130 transitions. [2025-02-06 13:10:25,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 126 transitions, 886 flow [2025-02-06 13:10:25,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 126 transitions, 821 flow, removed 23 selfloop flow, removed 2 redundant places. [2025-02-06 13:10:25,113 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 325 flow [2025-02-06 13:10:25,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2025-02-06 13:10:25,115 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-06 13:10:25,117 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 325 flow [2025-02-06 13:10:25,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:25,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:25,117 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:25,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:10:25,118 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:25,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1400062229, now seen corresponding path program 2 times [2025-02-06 13:10:25,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:25,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357397192] [2025-02-06 13:10:25,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:25,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:25,130 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:10:25,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:25,142 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:10:25,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357397192] [2025-02-06 13:10:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357397192] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:25,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:25,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:10:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701474960] [2025-02-06 13:10:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:25,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:10:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:25,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:10:25,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:10:25,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:25,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:25,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:25,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:25,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:27,721 INFO L124 PetriNetUnfolderBase]: 37844/49557 cut-off events. [2025-02-06 13:10:27,721 INFO L125 PetriNetUnfolderBase]: For 102395/102395 co-relation queries the response was YES. [2025-02-06 13:10:27,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174254 conditions, 49557 events. 37844/49557 cut-off events. For 102395/102395 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 264183 event pairs, 10706 based on Foata normal form. 965/50522 useless extension candidates. Maximal degree in co-relation 65094. Up to 21361 conditions per place. [2025-02-06 13:10:27,936 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 114 selfloop transitions, 31 changer transitions 2/148 dead transitions. [2025-02-06 13:10:27,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 148 transitions, 1149 flow [2025-02-06 13:10:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:10:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:10:27,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-06 13:10:27,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2025-02-06 13:10:27,937 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 325 flow. Second operand 5 states and 131 transitions. [2025-02-06 13:10:27,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 148 transitions, 1149 flow [2025-02-06 13:10:28,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 1117 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:10:28,021 INFO L231 Difference]: Finished difference. Result has 64 places, 77 transitions, 629 flow [2025-02-06 13:10:28,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=629, PETRI_PLACES=64, PETRI_TRANSITIONS=77} [2025-02-06 13:10:28,022 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-02-06 13:10:28,022 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 77 transitions, 629 flow [2025-02-06 13:10:28,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:28,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:28,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:28,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:10:28,023 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:28,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2049507927, now seen corresponding path program 3 times [2025-02-06 13:10:28,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:28,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093223871] [2025-02-06 13:10:28,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:28,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:28,031 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:10:28,039 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:28,039 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 13:10:28,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:28,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093223871] [2025-02-06 13:10:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093223871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:28,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:10:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751651785] [2025-02-06 13:10:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:28,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:10:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:28,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:10:28,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:10:28,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:28,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 77 transitions, 629 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:28,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:28,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:28,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:31,540 INFO L124 PetriNetUnfolderBase]: 49386/64469 cut-off events. [2025-02-06 13:10:31,540 INFO L125 PetriNetUnfolderBase]: For 201210/201210 co-relation queries the response was YES. [2025-02-06 13:10:31,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256034 conditions, 64469 events. 49386/64469 cut-off events. For 201210/201210 co-relation queries the response was YES. Maximal size of possible extension queue 1832. Compared 343921 event pairs, 18703 based on Foata normal form. 965/65434 useless extension candidates. Maximal degree in co-relation 119194. Up to 37650 conditions per place. [2025-02-06 13:10:31,828 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 141 selfloop transitions, 25 changer transitions 5/172 dead transitions. [2025-02-06 13:10:31,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 172 transitions, 1569 flow [2025-02-06 13:10:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:10:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:10:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-02-06 13:10:31,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 13:10:31,829 INFO L175 Difference]: Start difference. First operand has 64 places, 77 transitions, 629 flow. Second operand 5 states and 130 transitions. [2025-02-06 13:10:31,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 172 transitions, 1569 flow [2025-02-06 13:10:32,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 172 transitions, 1439 flow, removed 35 selfloop flow, removed 3 redundant places. [2025-02-06 13:10:32,336 INFO L231 Difference]: Finished difference. Result has 68 places, 98 transitions, 876 flow [2025-02-06 13:10:32,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=68, PETRI_TRANSITIONS=98} [2025-02-06 13:10:32,337 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2025-02-06 13:10:32,337 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 98 transitions, 876 flow [2025-02-06 13:10:32,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2025-02-06 13:10:32,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:32,337 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:32,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 13:10:32,337 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:32,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:32,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1584342727, now seen corresponding path program 4 times [2025-02-06 13:10:32,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:32,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512930878] [2025-02-06 13:10:32,338 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:10:32,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:32,345 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:10:32,356 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:32,356 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:10:32,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:32,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512930878] [2025-02-06 13:10:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512930878] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:32,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843095521] [2025-02-06 13:10:32,562 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:10:32,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:32,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:32,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:32,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:10:32,617 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:10:32,642 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:10:32,642 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:10:32,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:32,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 13:10:32,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:32,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843095521] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:32,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:32,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2025-02-06 13:10:32,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977818941] [2025-02-06 13:10:32,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:32,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 13:10:32,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:32,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 13:10:32,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-02-06 13:10:32,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:32,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 98 transitions, 876 flow. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 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) [2025-02-06 13:10:32,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:32,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:32,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:41,047 INFO L124 PetriNetUnfolderBase]: 75608/97681 cut-off events. [2025-02-06 13:10:41,048 INFO L125 PetriNetUnfolderBase]: For 336498/336498 co-relation queries the response was YES. [2025-02-06 13:10:41,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399914 conditions, 97681 events. 75608/97681 cut-off events. For 336498/336498 co-relation queries the response was YES. Maximal size of possible extension queue 2548. Compared 528293 event pairs, 3522 based on Foata normal form. 3433/101114 useless extension candidates. Maximal degree in co-relation 205592. Up to 25345 conditions per place. [2025-02-06 13:10:41,495 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 529 selfloop transitions, 196 changer transitions 11/737 dead transitions. [2025-02-06 13:10:41,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 737 transitions, 6067 flow [2025-02-06 13:10:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 13:10:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-02-06 13:10:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 761 transitions. [2025-02-06 13:10:41,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5844854070660522 [2025-02-06 13:10:41,498 INFO L175 Difference]: Start difference. First operand has 68 places, 98 transitions, 876 flow. Second operand 31 states and 761 transitions. [2025-02-06 13:10:41,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 737 transitions, 6067 flow [2025-02-06 13:10:42,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 737 transitions, 5805 flow, removed 131 selfloop flow, removed 0 redundant places. [2025-02-06 13:10:42,986 INFO L231 Difference]: Finished difference. Result has 121 places, 256 transitions, 2866 flow [2025-02-06 13:10:42,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2866, PETRI_PLACES=121, PETRI_TRANSITIONS=256} [2025-02-06 13:10:42,987 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2025-02-06 13:10:42,987 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 256 transitions, 2866 flow [2025-02-06 13:10:42,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 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) [2025-02-06 13:10:42,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:42,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:42,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 13:10:43,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:43,189 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:10:43,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash 718964767, now seen corresponding path program 1 times [2025-02-06 13:10:43,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:43,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001638856] [2025-02-06 13:10:43,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:43,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 13:10:43,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 13:10:43,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:43,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 13:10:43,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001638856] [2025-02-06 13:10:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001638856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:10:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267086235] [2025-02-06 13:10:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:43,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:10:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:43,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:10:43,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:10:43,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:10:43,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 256 transitions, 2866 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-02-06 13:10:43,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:43,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:10:43,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:53,356 INFO L124 PetriNetUnfolderBase]: 92317/119204 cut-off events. [2025-02-06 13:10:53,357 INFO L125 PetriNetUnfolderBase]: For 1558738/1558738 co-relation queries the response was YES. [2025-02-06 13:10:54,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690177 conditions, 119204 events. 92317/119204 cut-off events. For 1558738/1558738 co-relation queries the response was YES. Maximal size of possible extension queue 3174. Compared 662898 event pairs, 19878 based on Foata normal form. 1814/121018 useless extension candidates. Maximal degree in co-relation 626798. Up to 53560 conditions per place. [2025-02-06 13:10:54,634 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 394 selfloop transitions, 122 changer transitions 5/522 dead transitions. [2025-02-06 13:10:54,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 522 transitions, 6542 flow [2025-02-06 13:10:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:10:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:10:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2025-02-06 13:10:54,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2025-02-06 13:10:54,635 INFO L175 Difference]: Start difference. First operand has 121 places, 256 transitions, 2866 flow. Second operand 7 states and 180 transitions. [2025-02-06 13:10:54,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 522 transitions, 6542 flow [2025-02-06 13:11:16,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 522 transitions, 5783 flow, removed 181 selfloop flow, removed 8 redundant places. [2025-02-06 13:11:16,273 INFO L231 Difference]: Finished difference. Result has 121 places, 298 transitions, 3434 flow [2025-02-06 13:11:16,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3434, PETRI_PLACES=121, PETRI_TRANSITIONS=298} [2025-02-06 13:11:16,274 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2025-02-06 13:11:16,274 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 298 transitions, 3434 flow [2025-02-06 13:11:16,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-02-06 13:11:16,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:16,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:16,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 13:11:16,275 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:11:16,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1761442263, now seen corresponding path program 1 times [2025-02-06 13:11:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:16,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958656738] [2025-02-06 13:11:16,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:11:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:16,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 13:11:16,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 13:11:16,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:11:16,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 13:11:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:16,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958656738] [2025-02-06 13:11:16,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958656738] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:11:16,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:11:16,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:11:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804061885] [2025-02-06 13:11:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:11:16,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:11:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:16,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:11:16,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:11:16,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:11:16,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 298 transitions, 3434 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-06 13:11:16,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:16,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:11:16,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand