./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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/test-easy10.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 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:44:13,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:44:13,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:44:13,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:44:13,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:44:13,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:44:13,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:44:13,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:44:13,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:44:13,418 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:44:13,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:44:13,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:44:13,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:44:13,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:44:13,419 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:44:13,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:44:13,419 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:44:13,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:44:13,420 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:44:13,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:44:13,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:44:13,421 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 -> 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 [2025-02-08 08:44:13,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:44:13,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:44:13,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:44:13,658 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:44:13,658 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:44:13,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-02-08 08:44:14,808 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f2406bb1/1438bda31f644a01bd5ea23e2f190060/FLAGf5452f63d [2025-02-08 08:44:15,022 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:44:15,022 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-02-08 08:44:15,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f2406bb1/1438bda31f644a01bd5ea23e2f190060/FLAGf5452f63d [2025-02-08 08:44:15,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f2406bb1/1438bda31f644a01bd5ea23e2f190060 [2025-02-08 08:44:15,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:44:15,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:44:15,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:44:15,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:44:15,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:44:15,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1c6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15, skipping insertion in model container [2025-02-08 08:44:15,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:44:15,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:44:15,507 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:44:15,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:44:15,530 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:44:15,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15 WrapperNode [2025-02-08 08:44:15,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:44:15,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:44:15,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:44:15,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:44:15,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,562 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 149 [2025-02-08 08:44:15,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:44:15,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:44:15,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:44:15,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:44:15,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,581 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]. [2025-02-08 08:44:15,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,585 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:44:15,588 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:44:15,589 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:44:15,589 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:44:15,589 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (1/1) ... [2025-02-08 08:44:15,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:44:15,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:44:15,610 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) [2025-02-08 08:44:15,612 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 [2025-02-08 08:44:15,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:44:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:44:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:44:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:44:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:44:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:44:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:44:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 08:44:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 08:44:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:44:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:44:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:44:15,631 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:44:15,691 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:44:15,692 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:44:15,871 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:44:15,871 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:44:16,002 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:44:16,003 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:44:16,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:44:16 BoogieIcfgContainer [2025-02-08 08:44:16,004 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:44:16,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:44:16,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:44:16,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:44:16,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:44:15" (1/3) ... [2025-02-08 08:44:16,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d21a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:44:16, skipping insertion in model container [2025-02-08 08:44:16,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:15" (2/3) ... [2025-02-08 08:44:16,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d21a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:44:16, skipping insertion in model container [2025-02-08 08:44:16,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:44:16" (3/3) ... [2025-02-08 08:44:16,012 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2025-02-08 08:44:16,023 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:44:16,025 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy10.wvr.c that has 5 procedures, 63 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 08:44:16,025 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:44:16,081 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 08:44:16,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 62 transitions, 152 flow [2025-02-08 08:44:16,146 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2025-02-08 08:44:16,148 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:44:16,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 0/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-08 08:44:16,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 62 transitions, 152 flow [2025-02-08 08:44:16,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 57 transitions, 138 flow [2025-02-08 08:44:16,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:44:16,166 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;@6f2fbdae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:44:16,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 08:44:16,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:44:16,183 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2025-02-08 08:44:16,183 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:44:16,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:16,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:44:16,187 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)] === [2025-02-08 08:44:16,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -917089841, now seen corresponding path program 1 times [2025-02-08 08:44:16,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:16,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993425652] [2025-02-08 08:44:16,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:44:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:16,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 08:44:16,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 08:44:16,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:44:16,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:16,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993425652] [2025-02-08 08:44:16,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993425652] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:16,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:16,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:44:16,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751651785] [2025-02-08 08:44:16,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:16,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:44:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:16,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:44:16,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:44:16,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-08 08:44:16,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-02-08 08:44:16,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-08 08:44:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:18,492 INFO L124 PetriNetUnfolderBase]: 22838/30875 cut-off events. [2025-02-08 08:44:18,493 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2025-02-08 08:44:18,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63061 conditions, 30875 events. 22838/30875 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 171244 event pairs, 7169 based on Foata normal form. 441/31275 useless extension candidates. Maximal degree in co-relation 59981. Up to 24496 conditions per place. [2025-02-08 08:44:18,668 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-02-08 08:44:18,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 328 flow [2025-02-08 08:44:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:44:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:44:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-02-08 08:44:18,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2025-02-08 08:44:18,680 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 138 flow. Second operand 3 states and 104 transitions. [2025-02-08 08:44:18,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 328 flow [2025-02-08 08:44:18,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 08:44:18,711 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 126 flow [2025-02-08 08:44:18,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2025-02-08 08:44:18,716 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2025-02-08 08:44:18,718 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 126 flow [2025-02-08 08:44:18,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-02-08 08:44:18,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:18,719 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 08:44:18,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:44:18,719 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)] === [2025-02-08 08:44:18,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1224781125, now seen corresponding path program 2 times [2025-02-08 08:44:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643643176] [2025-02-08 08:44:18,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:44:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:18,737 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-02-08 08:44:18,758 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 08:44:18,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:44:18,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:18,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:18,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643643176] [2025-02-08 08:44:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643643176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:44:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827814858] [2025-02-08 08:44:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:18,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:44:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:18,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:44:18,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:44:18,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-08 08:44:18,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-02-08 08:44:18,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:18,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-08 08:44:18,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:20,066 INFO L124 PetriNetUnfolderBase]: 17539/23837 cut-off events. [2025-02-08 08:44:20,067 INFO L125 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2025-02-08 08:44:20,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49392 conditions, 23837 events. 17539/23837 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 123942 event pairs, 6369 based on Foata normal form. 434/24222 useless extension candidates. Maximal degree in co-relation 17479. Up to 17342 conditions per place. [2025-02-08 08:44:20,151 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 68 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-02-08 08:44:20,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 313 flow [2025-02-08 08:44:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:44:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:44:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-02-08 08:44:20,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543010752688172 [2025-02-08 08:44:20,154 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 126 flow. Second operand 3 states and 101 transitions. [2025-02-08 08:44:20,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 313 flow [2025-02-08 08:44:20,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:44:20,158 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2025-02-08 08:44:20,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-02-08 08:44:20,159 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2025-02-08 08:44:20,159 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2025-02-08 08:44:20,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-02-08 08:44:20,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:20,160 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:44:20,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:44:20,160 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)] === [2025-02-08 08:44:20,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 540428055, now seen corresponding path program 3 times [2025-02-08 08:44:20,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:20,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473250238] [2025-02-08 08:44:20,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:44:20,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:20,174 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 1 equivalence classes. [2025-02-08 08:44:20,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 08:44:20,276 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:44:20,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:21,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:21,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473250238] [2025-02-08 08:44:21,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473250238] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:21,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-08 08:44:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400566477] [2025-02-08 08:44:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:21,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:44:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:21,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:44:21,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:44:21,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-08 08:44:21,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 130 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-08 08:44:21,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:21,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-08 08:44:21,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:25,802 INFO L124 PetriNetUnfolderBase]: 43818/60147 cut-off events. [2025-02-08 08:44:25,803 INFO L125 PetriNetUnfolderBase]: For 4618/4618 co-relation queries the response was YES. [2025-02-08 08:44:25,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127496 conditions, 60147 events. 43818/60147 cut-off events. For 4618/4618 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 364936 event pairs, 5303 based on Foata normal form. 1/60123 useless extension candidates. Maximal degree in co-relation 25744. Up to 14408 conditions per place. [2025-02-08 08:44:26,080 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 251 selfloop transitions, 16 changer transitions 19/291 dead transitions. [2025-02-08 08:44:26,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 291 transitions, 1271 flow [2025-02-08 08:44:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 08:44:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 08:44:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 437 transitions. [2025-02-08 08:44:26,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4698924731182796 [2025-02-08 08:44:26,085 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 130 flow. Second operand 15 states and 437 transitions. [2025-02-08 08:44:26,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 291 transitions, 1271 flow [2025-02-08 08:44:26,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 291 transitions, 1251 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:44:26,110 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 250 flow [2025-02-08 08:44:26,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2025-02-08 08:44:26,112 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2025-02-08 08:44:26,112 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 250 flow [2025-02-08 08:44:26,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-08 08:44:26,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:26,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:44:26,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:44:26,112 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)] === [2025-02-08 08:44:26,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1975266319, now seen corresponding path program 4 times [2025-02-08 08:44:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939638601] [2025-02-08 08:44:26,113 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:44:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:26,121 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-08 08:44:26,132 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 08:44:26,133 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:44:26,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:26,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939638601] [2025-02-08 08:44:26,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939638601] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:26,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:26,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:44:26,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961981539] [2025-02-08 08:44:26,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:26,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:44:26,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:26,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:44:26,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:44:26,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-08 08:44:26,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-02-08 08:44:26,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:26,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-08 08:44:26,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:28,565 INFO L124 PetriNetUnfolderBase]: 35366/48902 cut-off events. [2025-02-08 08:44:28,565 INFO L125 PetriNetUnfolderBase]: For 33407/33407 co-relation queries the response was YES. [2025-02-08 08:44:28,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131387 conditions, 48902 events. 35366/48902 cut-off events. For 33407/33407 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 290963 event pairs, 14368 based on Foata normal form. 540/49406 useless extension candidates. Maximal degree in co-relation 131342. Up to 42949 conditions per place. [2025-02-08 08:44:28,931 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 86 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2025-02-08 08:44:28,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 503 flow [2025-02-08 08:44:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:44:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:44:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-02-08 08:44:28,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2025-02-08 08:44:28,936 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 250 flow. Second operand 3 states and 105 transitions. [2025-02-08 08:44:28,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 503 flow [2025-02-08 08:44:29,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 487 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 08:44:29,415 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 234 flow [2025-02-08 08:44:29,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2025-02-08 08:44:29,416 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2025-02-08 08:44:29,416 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 234 flow [2025-02-08 08:44:29,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-02-08 08:44:29,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:29,416 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:44:29,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:44:29,416 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)] === [2025-02-08 08:44:29,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash 586248007, now seen corresponding path program 5 times [2025-02-08 08:44:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125041501] [2025-02-08 08:44:29,417 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:44:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:29,427 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-02-08 08:44:29,465 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 08:44:29,465 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:44:29,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:30,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125041501] [2025-02-08 08:44:30,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125041501] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:30,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:30,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-08 08:44:30,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720136698] [2025-02-08 08:44:30,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:30,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:44:30,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:30,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:44:30,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:44:30,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-08 08:44:30,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-08 08:44:30,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:30,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-08 08:44:30,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:36,494 INFO L124 PetriNetUnfolderBase]: 65121/91304 cut-off events. [2025-02-08 08:44:36,494 INFO L125 PetriNetUnfolderBase]: For 52985/52985 co-relation queries the response was YES. [2025-02-08 08:44:36,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239409 conditions, 91304 events. 65121/91304 cut-off events. For 52985/52985 co-relation queries the response was YES. Maximal size of possible extension queue 2106. Compared 601608 event pairs, 9909 based on Foata normal form. 1/91276 useless extension candidates. Maximal degree in co-relation 181201. Up to 28006 conditions per place. [2025-02-08 08:44:37,026 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 290 selfloop transitions, 27 changer transitions 10/332 dead transitions. [2025-02-08 08:44:37,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 332 transitions, 1834 flow [2025-02-08 08:44:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 08:44:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 08:44:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 431 transitions. [2025-02-08 08:44:37,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46344086021505376 [2025-02-08 08:44:37,028 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 234 flow. Second operand 15 states and 431 transitions. [2025-02-08 08:44:37,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 332 transitions, 1834 flow [2025-02-08 08:44:37,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 332 transitions, 1814 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:44:37,650 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 482 flow [2025-02-08 08:44:37,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=482, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2025-02-08 08:44:37,651 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 39 predicate places. [2025-02-08 08:44:37,651 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 482 flow [2025-02-08 08:44:37,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-08 08:44:37,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:37,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:44:37,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:44:37,651 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)] === [2025-02-08 08:44:37,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash 750717347, now seen corresponding path program 6 times [2025-02-08 08:44:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:37,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457437848] [2025-02-08 08:44:37,652 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:44:37,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:37,658 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 1 equivalence classes. [2025-02-08 08:44:37,682 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 08:44:37,683 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 08:44:37,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:38,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:38,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457437848] [2025-02-08 08:44:38,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457437848] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:38,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:38,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-08 08:44:38,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596250863] [2025-02-08 08:44:38,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:38,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:44:38,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:38,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:44:38,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:44:38,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-08 08:44:38,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 482 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-08 08:44:38,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:38,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-08 08:44:38,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:48,066 INFO L124 PetriNetUnfolderBase]: 95501/134922 cut-off events. [2025-02-08 08:44:48,066 INFO L125 PetriNetUnfolderBase]: For 206872/206872 co-relation queries the response was YES. [2025-02-08 08:44:48,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410357 conditions, 134922 events. 95501/134922 cut-off events. For 206872/206872 co-relation queries the response was YES. Maximal size of possible extension queue 3099. Compared 945245 event pairs, 15614 based on Foata normal form. 1/134898 useless extension candidates. Maximal degree in co-relation 410009. Up to 36303 conditions per place. [2025-02-08 08:44:49,126 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 310 selfloop transitions, 47 changer transitions 11/373 dead transitions. [2025-02-08 08:44:49,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 373 transitions, 2595 flow [2025-02-08 08:44:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 08:44:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 08:44:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 428 transitions. [2025-02-08 08:44:49,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46021505376344085 [2025-02-08 08:44:49,128 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 482 flow. Second operand 15 states and 428 transitions. [2025-02-08 08:44:49,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 373 transitions, 2595 flow [2025-02-08 08:44:53,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 373 transitions, 2557 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-02-08 08:44:53,767 INFO L231 Difference]: Finished difference. Result has 131 places, 120 transitions, 976 flow [2025-02-08 08:44:53,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=976, PETRI_PLACES=131, PETRI_TRANSITIONS=120} [2025-02-08 08:44:53,768 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 61 predicate places. [2025-02-08 08:44:53,768 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 120 transitions, 976 flow [2025-02-08 08:44:53,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-08 08:44:53,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:53,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:44:53,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:44:53,768 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)] === [2025-02-08 08:44:53,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:53,769 INFO L85 PathProgramCache]: Analyzing trace with hash -744688343, now seen corresponding path program 7 times [2025-02-08 08:44:53,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:53,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487505091] [2025-02-08 08:44:53,769 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:44:53,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:53,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 08:44:53,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 08:44:53,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:44:53,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:54,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:54,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487505091] [2025-02-08 08:44:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487505091] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:54,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:54,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-08 08:44:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542220646] [2025-02-08 08:44:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:54,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:44:54,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:54,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:44:54,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:44:54,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-08 08:44:54,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 120 transitions, 976 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-08 08:44:54,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:54,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-08 08:44:54,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand