./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:15:12,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:15:12,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:15:12,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:15:12,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:15:12,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:15:12,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:15:12,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:15:12,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:15:12,815 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:15:12,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:15:12,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:15:12,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:15:12,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:15:12,817 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:15:12,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:15:12,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:15:12,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:15:12,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:15:12,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:15:12,819 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:15:12,823 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:15:12,823 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:15:12,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:15:12,827 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:15:12,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:15:12,828 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:15:12,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:15:12,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:15:12,829 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:15:12,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:15:12,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:15:12,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:15:12,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:15:12,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:15:12,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:15:12,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:15:12,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:15:12,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:15:12,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:15:12,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:15:12,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:15:12,833 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2024-11-10 18:15:13,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:15:13,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:15:13,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:15:13,121 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:15:13,122 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:15:13,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-10 18:15:14,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:15:14,849 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:15:14,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-10 18:15:14,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d21b411/3336d9bb7f4c43248d2ba54db79f0c8d/FLAG54e0b61e6 [2024-11-10 18:15:15,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d21b411/3336d9bb7f4c43248d2ba54db79f0c8d [2024-11-10 18:15:15,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:15:15,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:15:15,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:15:15,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:15:15,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:15:15,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7941df5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15, skipping insertion in model container [2024-11-10 18:15:15,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:15:15,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:15:15,540 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:15:15,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:15:15,581 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:15:15,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15 WrapperNode [2024-11-10 18:15:15,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:15:15,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:15:15,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:15:15,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:15:15,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,622 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 212 [2024-11-10 18:15:15,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:15:15,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:15:15,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:15:15,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:15:15,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,663 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]. [2024-11-10 18:15:15,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,669 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:15:15,676 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:15:15,676 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:15:15,676 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:15:15,677 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (1/1) ... [2024-11-10 18:15:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:15:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:15,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:15:15,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:15:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:15:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:15:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:15:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:15:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:15:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 18:15:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 18:15:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 18:15:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 18:15:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:15:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-10 18:15:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-10 18:15:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-10 18:15:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-10 18:15:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:15:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:15:15,769 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:15:15,875 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:15:15,878 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:15:16,174 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:15:16,174 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:15:16,418 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:15:16,419 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:15:16,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:15:16 BoogieIcfgContainer [2024-11-10 18:15:16,419 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:15:16,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:15:16,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:15:16,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:15:16,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:15:15" (1/3) ... [2024-11-10 18:15:16,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d37eac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:15:16, skipping insertion in model container [2024-11-10 18:15:16,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:15" (2/3) ... [2024-11-10 18:15:16,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d37eac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:15:16, skipping insertion in model container [2024-11-10 18:15:16,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:15:16" (3/3) ... [2024-11-10 18:15:16,436 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-11-10 18:15:16,452 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:15:16,453 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:15:16,453 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:15:16,559 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-10 18:15:16,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 84 transitions, 234 flow [2024-11-10 18:15:16,668 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2024-11-10 18:15:16,668 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:15:16,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 72 events. 4/72 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2024-11-10 18:15:16,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 84 transitions, 234 flow [2024-11-10 18:15:16,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 71 transitions, 190 flow [2024-11-10 18:15:16,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:15:16,702 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;@2ae021d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:15:16,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-10 18:15:16,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:15:16,738 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2024-11-10 18:15:16,738 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:15:16,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:16,740 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:16,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-11-10 18:15:16,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash -769371696, now seen corresponding path program 1 times [2024-11-10 18:15:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208660982] [2024-11-10 18:15:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:17,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:17,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208660982] [2024-11-10 18:15:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208660982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:17,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:17,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:15:17,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294302019] [2024-11-10 18:15:17,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:17,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:15:17,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:15:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:15:17,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2024-11-10 18:15:17,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 18:15:17,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:17,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2024-11-10 18:15:17,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:26,925 INFO L124 PetriNetUnfolderBase]: 90013/113964 cut-off events. [2024-11-10 18:15:26,925 INFO L125 PetriNetUnfolderBase]: For 7771/7771 co-relation queries the response was YES. [2024-11-10 18:15:27,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239389 conditions, 113964 events. 90013/113964 cut-off events. For 7771/7771 co-relation queries the response was YES. Maximal size of possible extension queue 1723. Compared 564222 event pairs, 53048 based on Foata normal form. 1985/113165 useless extension candidates. Maximal degree in co-relation 238400. Up to 76768 conditions per place. [2024-11-10 18:15:27,748 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 93 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2024-11-10 18:15:27,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 459 flow [2024-11-10 18:15:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:15:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:15:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-10 18:15:27,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-11-10 18:15:27,770 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 190 flow. Second operand 3 states and 123 transitions. [2024-11-10 18:15:27,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 459 flow [2024-11-10 18:15:28,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 413 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-10 18:15:28,065 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2024-11-10 18:15:28,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-10 18:15:28,081 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -11 predicate places. [2024-11-10 18:15:28,081 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2024-11-10 18:15:28,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 18:15:28,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:28,082 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:28,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:15:28,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-11-10 18:15:28,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:28,083 INFO L85 PathProgramCache]: Analyzing trace with hash 255924498, now seen corresponding path program 2 times [2024-11-10 18:15:28,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:28,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097931827] [2024-11-10 18:15:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:28,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097931827] [2024-11-10 18:15:28,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097931827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:28,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:28,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:15:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635574558] [2024-11-10 18:15:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:28,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:15:28,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:15:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:15:28,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2024-11-10 18:15:28,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 18:15:28,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:28,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2024-11-10 18:15:28,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:33,615 INFO L124 PetriNetUnfolderBase]: 68959/87699 cut-off events. [2024-11-10 18:15:33,619 INFO L125 PetriNetUnfolderBase]: For 4094/4094 co-relation queries the response was YES. [2024-11-10 18:15:33,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182286 conditions, 87699 events. 68959/87699 cut-off events. For 4094/4094 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 420896 event pairs, 40785 based on Foata normal form. 1544/87308 useless extension candidates. Maximal degree in co-relation 80231. Up to 59185 conditions per place. [2024-11-10 18:15:33,971 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 92 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-11-10 18:15:33,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 431 flow [2024-11-10 18:15:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:15:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:15:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-10 18:15:33,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-10 18:15:33,973 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 121 transitions. [2024-11-10 18:15:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 431 flow [2024-11-10 18:15:34,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:34,018 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2024-11-10 18:15:34,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-11-10 18:15:34,019 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2024-11-10 18:15:34,019 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2024-11-10 18:15:34,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 18:15:34,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:34,019 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:34,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:15:34,020 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-11-10 18:15:34,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash -41784712, now seen corresponding path program 3 times [2024-11-10 18:15:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363973822] [2024-11-10 18:15:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363973822] [2024-11-10 18:15:35,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363973822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:35,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:35,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-10 18:15:35,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611114563] [2024-11-10 18:15:35,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:35,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 18:15:35,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 18:15:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-10 18:15:35,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2024-11-10 18:15:35,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 20 states, 20 states have (on average 11.2) internal successors, (224), 20 states have internal predecessors, (224), 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) [2024-11-10 18:15:35,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:35,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2024-11-10 18:15:35,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:44,619 INFO L124 PetriNetUnfolderBase]: 89726/114031 cut-off events. [2024-11-10 18:15:44,619 INFO L125 PetriNetUnfolderBase]: For 6910/6910 co-relation queries the response was YES. [2024-11-10 18:15:44,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241259 conditions, 114031 events. 89726/114031 cut-off events. For 6910/6910 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 554878 event pairs, 9751 based on Foata normal form. 2/111315 useless extension candidates. Maximal degree in co-relation 107429. Up to 69274 conditions per place. [2024-11-10 18:15:45,417 INFO L140 encePairwiseOnDemand]: 65/88 looper letters, 475 selfloop transitions, 149 changer transitions 40/665 dead transitions. [2024-11-10 18:15:45,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 665 transitions, 2929 flow [2024-11-10 18:15:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-10 18:15:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-10 18:15:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1018 transitions. [2024-11-10 18:15:45,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26291322314049587 [2024-11-10 18:15:45,426 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 44 states and 1018 transitions. [2024-11-10 18:15:45,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 665 transitions, 2929 flow [2024-11-10 18:15:45,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 665 transitions, 2879 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:45,599 INFO L231 Difference]: Finished difference. Result has 140 places, 217 transitions, 987 flow [2024-11-10 18:15:45,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=987, PETRI_PLACES=140, PETRI_TRANSITIONS=217} [2024-11-10 18:15:45,600 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 54 predicate places. [2024-11-10 18:15:45,600 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 217 transitions, 987 flow [2024-11-10 18:15:45,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.2) internal successors, (224), 20 states have internal predecessors, (224), 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) [2024-11-10 18:15:45,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:45,601 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:45,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:15:45,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-11-10 18:15:45,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash 663298396, now seen corresponding path program 4 times [2024-11-10 18:15:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528398682] [2024-11-10 18:15:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:45,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528398682] [2024-11-10 18:15:45,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528398682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:45,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:45,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:15:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050371437] [2024-11-10 18:15:45,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:45,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:15:45,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:45,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:15:45,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:15:45,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2024-11-10 18:15:45,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 217 transitions, 987 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 18:15:45,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:45,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2024-11-10 18:15:45,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:52,933 INFO L124 PetriNetUnfolderBase]: 72761/92972 cut-off events. [2024-11-10 18:15:52,934 INFO L125 PetriNetUnfolderBase]: For 200656/200656 co-relation queries the response was YES. [2024-11-10 18:15:53,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285704 conditions, 92972 events. 72761/92972 cut-off events. For 200656/200656 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 449220 event pairs, 34524 based on Foata normal form. 1502/91968 useless extension candidates. Maximal degree in co-relation 258454. Up to 60890 conditions per place. [2024-11-10 18:15:53,765 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 285 selfloop transitions, 5 changer transitions 0/291 dead transitions. [2024-11-10 18:15:53,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 291 transitions, 1915 flow [2024-11-10 18:15:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:15:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:15:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-10 18:15:53,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-11-10 18:15:53,767 INFO L175 Difference]: Start difference. First operand has 140 places, 217 transitions, 987 flow. Second operand 3 states and 123 transitions. [2024-11-10 18:15:53,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 291 transitions, 1915 flow [2024-11-10 18:15:54,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 291 transitions, 1907 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:54,864 INFO L231 Difference]: Finished difference. Result has 142 places, 216 transitions, 1000 flow [2024-11-10 18:15:54,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1000, PETRI_PLACES=142, PETRI_TRANSITIONS=216} [2024-11-10 18:15:54,869 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 56 predicate places. [2024-11-10 18:15:54,869 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 216 transitions, 1000 flow [2024-11-10 18:15:54,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-10 18:15:54,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:54,869 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:54,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:15:54,870 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2024-11-10 18:15:54,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1175647081, now seen corresponding path program 1 times [2024-11-10 18:15:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430280869] [2024-11-10 18:15:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:54,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:55,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:55,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430280869] [2024-11-10 18:15:55,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430280869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:55,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:55,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-10 18:15:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269550058] [2024-11-10 18:15:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:55,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 18:15:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 18:15:55,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2024-11-10 18:15:55,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2024-11-10 18:15:55,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 216 transitions, 1000 flow. Second operand has 22 states, 22 states have (on average 10.909090909090908) internal successors, (240), 22 states have internal predecessors, (240), 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) [2024-11-10 18:15:55,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:55,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2024-11-10 18:15:55,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand