./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f 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/popl20-mult-4.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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:30:59,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:30:59,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:30:59,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:30:59,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:30:59,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:30:59,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:30:59,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:30:59,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:30:59,401 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:30:59,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:30:59,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:30:59,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:30:59,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:30:59,403 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:30:59,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:30:59,405 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:30:59,405 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:30:59,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:30:59,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:30:59,408 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:30:59,409 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:30:59,409 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:30:59,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:30:59,412 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:30:59,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:30:59,412 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:30:59,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:30:59,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:30:59,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:30:59,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:30:59,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:30:59,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:30:59,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:30:59,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:30:59,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:30:59,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:30:59,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:30:59,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:30:59,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:30:59,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:30:59,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:30:59,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-11-12 16:30:59,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:30:59,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:30:59,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:30:59,675 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:30:59,677 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:30:59,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-12 16:31:01,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:31:01,308 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:31:01,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-12 16:31:01,316 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60547843e/19758948205743e1921fc1a1102c0ecb/FLAGd2e3ef60d [2024-11-12 16:31:01,331 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60547843e/19758948205743e1921fc1a1102c0ecb [2024-11-12 16:31:01,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:31:01,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:31:01,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:31:01,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:31:01,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:31:01,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198d856f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01, skipping insertion in model container [2024-11-12 16:31:01,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,367 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:31:01,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:31:01,574 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:31:01,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:31:01,610 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:31:01,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01 WrapperNode [2024-11-12 16:31:01,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:31:01,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:31:01,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:31:01,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:31:01,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,646 INFO L138 Inliner]: procedures = 22, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2024-11-12 16:31:01,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:31:01,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:31:01,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:31:01,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:31:01,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,670 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]. [2024-11-12 16:31:01,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,670 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:31:01,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:31:01,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:31:01,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:31:01,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (1/1) ... [2024-11-12 16:31:01,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:31:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:01,717 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) [2024-11-12 16:31:01,723 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 [2024-11-12 16:31:01,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:31:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:31:01,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:31:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:31:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:31:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 16:31:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 16:31:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-12 16:31:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-12 16:31:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:31:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 16:31:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 16:31:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:31:01,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:31:01,771 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:31:01,883 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:31:01,885 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:31:02,131 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:31:02,131 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:31:02,299 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:31:02,300 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 16:31:02,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:31:02 BoogieIcfgContainer [2024-11-12 16:31:02,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:31:02,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:31:02,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:31:02,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:31:02,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:31:01" (1/3) ... [2024-11-12 16:31:02,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b9cd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:31:02, skipping insertion in model container [2024-11-12 16:31:02,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:01" (2/3) ... [2024-11-12 16:31:02,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b9cd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:31:02, skipping insertion in model container [2024-11-12 16:31:02,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:31:02" (3/3) ... [2024-11-12 16:31:02,312 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-11-12 16:31:02,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:31:02,325 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:31:02,325 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:31:02,399 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 16:31:02,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-12 16:31:02,476 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-12 16:31:02,479 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 16:31:02,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-12 16:31:02,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-12 16:31:02,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-12 16:31:02,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:31:02,505 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;@6a18d003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:31:02,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-12 16:31:02,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:31:02,519 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-12 16:31:02,520 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 16:31:02,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:02,521 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] [2024-11-12 16:31:02,523 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:02,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112110, now seen corresponding path program 1 times [2024-11-12 16:31:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307667133] [2024-11-12 16:31:02,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307667133] [2024-11-12 16:31:03,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307667133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:03,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:03,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:31:03,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774874510] [2024-11-12 16:31:03,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:03,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:31:03,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:31:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:31:03,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-12 16:31:03,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:03,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:03,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-12 16:31:03,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:03,582 INFO L124 PetriNetUnfolderBase]: 3042/4219 cut-off events. [2024-11-12 16:31:03,583 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-11-12 16:31:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 4219 events. 3042/4219 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18643 event pairs, 763 based on Foata normal form. 153/4362 useless extension candidates. Maximal degree in co-relation 7613. Up to 3203 conditions per place. [2024-11-12 16:31:03,618 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-12 16:31:03,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-11-12 16:31:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:31:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:31:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-12 16:31:03,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-12 16:31:03,633 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2024-11-12 16:31:03,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-11-12 16:31:03,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-12 16:31:03,647 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-12 16:31:03,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-12 16:31:03,656 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-12 16:31:03,657 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-12 16:31:03,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:03,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:03,657 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] [2024-11-12 16:31:03,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:31:03,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:03,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash -56319925, now seen corresponding path program 1 times [2024-11-12 16:31:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085159965] [2024-11-12 16:31:03,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:03,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:03,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085159965] [2024-11-12 16:31:03,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085159965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:03,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:03,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:31:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019993657] [2024-11-12 16:31:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:03,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:31:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:31:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:31:03,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:03,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:03,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:03,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:03,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:05,111 INFO L124 PetriNetUnfolderBase]: 11992/15976 cut-off events. [2024-11-12 16:31:05,111 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-12 16:31:05,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33896 conditions, 15976 events. 11992/15976 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 80196 event pairs, 4358 based on Foata normal form. 0/12611 useless extension candidates. Maximal degree in co-relation 9557. Up to 8661 conditions per place. [2024-11-12 16:31:05,218 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-12 16:31:05,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-11-12 16:31:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:31:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:31:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-12 16:31:05,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-12 16:31:05,222 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 134 transitions. [2024-11-12 16:31:05,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-11-12 16:31:05,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:31:05,226 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-11-12 16:31:05,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-12 16:31:05,228 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-12 16:31:05,228 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-11-12 16:31:05,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:05,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:05,229 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] [2024-11-12 16:31:05,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:31:05,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:05,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1593058387, now seen corresponding path program 2 times [2024-11-12 16:31:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:05,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954198084] [2024-11-12 16:31:05,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954198084] [2024-11-12 16:31:05,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954198084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:05,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295266341] [2024-11-12 16:31:05,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:31:05,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:05,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:05,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:31:05,474 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:31:05,474 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:05,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:31:05,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:05,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:05,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295266341] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:05,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 16:31:05,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-11-12 16:31:05,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169044584] [2024-11-12 16:31:05,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:05,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:31:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:31:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-12 16:31:05,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:05,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-12 16:31:05,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:05,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:06,882 INFO L124 PetriNetUnfolderBase]: 13343/17991 cut-off events. [2024-11-12 16:31:06,883 INFO L125 PetriNetUnfolderBase]: For 8111/8273 co-relation queries the response was YES. [2024-11-12 16:31:06,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47024 conditions, 17991 events. 13343/17991 cut-off events. For 8111/8273 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 94778 event pairs, 1659 based on Foata normal form. 780/18561 useless extension candidates. Maximal degree in co-relation 26504. Up to 9240 conditions per place. [2024-11-12 16:31:06,993 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 81 selfloop transitions, 9 changer transitions 2/97 dead transitions. [2024-11-12 16:31:06,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 97 transitions, 518 flow [2024-11-12 16:31:06,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:31:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:31:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-12 16:31:06,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-12 16:31:06,997 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 108 transitions. [2024-11-12 16:31:06,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 97 transitions, 518 flow [2024-11-12 16:31:07,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 97 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:31:07,020 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 243 flow [2024-11-12 16:31:07,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2024-11-12 16:31:07,022 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-12 16:31:07,022 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 243 flow [2024-11-12 16:31:07,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-12 16:31:07,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:07,023 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] [2024-11-12 16:31:07,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:31:07,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:07,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:07,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1245906665, now seen corresponding path program 3 times [2024-11-12 16:31:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:07,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286434383] [2024-11-12 16:31:07,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:07,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:07,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286434383] [2024-11-12 16:31:07,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286434383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:07,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:07,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:31:07,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638735906] [2024-11-12 16:31:07,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:07,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:31:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:07,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:31:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:31:07,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:07,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:07,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:07,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:07,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:09,395 INFO L124 PetriNetUnfolderBase]: 18498/24637 cut-off events. [2024-11-12 16:31:09,395 INFO L125 PetriNetUnfolderBase]: For 27302/27368 co-relation queries the response was YES. [2024-11-12 16:31:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74720 conditions, 24637 events. 18498/24637 cut-off events. For 27302/27368 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 129257 event pairs, 5492 based on Foata normal form. 198/24329 useless extension candidates. Maximal degree in co-relation 29076. Up to 11045 conditions per place. [2024-11-12 16:31:09,555 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 99 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2024-11-12 16:31:09,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 119 transitions, 733 flow [2024-11-12 16:31:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:31:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:31:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-12 16:31:09,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-12 16:31:09,559 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 243 flow. Second operand 5 states and 133 transitions. [2024-11-12 16:31:09,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 119 transitions, 733 flow [2024-11-12 16:31:09,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 119 transitions, 733 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:31:09,582 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 362 flow [2024-11-12 16:31:09,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2024-11-12 16:31:09,583 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-12 16:31:09,583 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 362 flow [2024-11-12 16:31:09,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:09,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:09,584 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] [2024-11-12 16:31:09,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:31:09,584 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:09,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -802010055, now seen corresponding path program 4 times [2024-11-12 16:31:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395061680] [2024-11-12 16:31:09,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:09,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395061680] [2024-11-12 16:31:09,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395061680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:09,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:09,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:31:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663650874] [2024-11-12 16:31:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:09,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:31:09,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:31:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:31:09,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:09,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:09,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:09,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:09,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:11,343 INFO L124 PetriNetUnfolderBase]: 18812/25244 cut-off events. [2024-11-12 16:31:11,343 INFO L125 PetriNetUnfolderBase]: For 52460/52532 co-relation queries the response was YES. [2024-11-12 16:31:11,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84963 conditions, 25244 events. 18812/25244 cut-off events. For 52460/52532 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 135156 event pairs, 5684 based on Foata normal form. 374/25136 useless extension candidates. Maximal degree in co-relation 31997. Up to 11521 conditions per place. [2024-11-12 16:31:11,500 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 98 selfloop transitions, 12 changer transitions 3/118 dead transitions. [2024-11-12 16:31:11,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 118 transitions, 785 flow [2024-11-12 16:31:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:31:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:31:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-12 16:31:11,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-12 16:31:11,503 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 362 flow. Second operand 5 states and 134 transitions. [2024-11-12 16:31:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 118 transitions, 785 flow [2024-11-12 16:31:11,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 118 transitions, 777 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-12 16:31:11,552 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 425 flow [2024-11-12 16:31:11,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2024-11-12 16:31:11,553 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-11-12 16:31:11,553 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 425 flow [2024-11-12 16:31:11,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:11,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:11,553 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] [2024-11-12 16:31:11,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:31:11,554 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:11,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2013789705, now seen corresponding path program 1 times [2024-11-12 16:31:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126136200] [2024-11-12 16:31:11,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:11,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126136200] [2024-11-12 16:31:11,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126136200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:11,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:11,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:31:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943269797] [2024-11-12 16:31:11,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:11,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:31:11,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:31:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:31:11,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:11,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:11,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:11,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:11,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:13,473 INFO L124 PetriNetUnfolderBase]: 20855/28170 cut-off events. [2024-11-12 16:31:13,473 INFO L125 PetriNetUnfolderBase]: For 92692/92710 co-relation queries the response was YES. [2024-11-12 16:31:13,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101632 conditions, 28170 events. 20855/28170 cut-off events. For 92692/92710 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 156510 event pairs, 5974 based on Foata normal form. 695/28258 useless extension candidates. Maximal degree in co-relation 32893. Up to 13524 conditions per place. [2024-11-12 16:31:13,790 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 90 selfloop transitions, 14 changer transitions 17/126 dead transitions. [2024-11-12 16:31:13,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 126 transitions, 969 flow [2024-11-12 16:31:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:31:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:31:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-12 16:31:13,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-12 16:31:13,793 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 425 flow. Second operand 5 states and 135 transitions. [2024-11-12 16:31:13,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 126 transitions, 969 flow [2024-11-12 16:31:13,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 126 transitions, 936 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 16:31:13,845 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 470 flow [2024-11-12 16:31:13,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-12 16:31:13,846 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-12 16:31:13,846 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 470 flow [2024-11-12 16:31:13,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:13,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:13,846 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] [2024-11-12 16:31:13,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:31:13,847 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:13,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1511295417, now seen corresponding path program 5 times [2024-11-12 16:31:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:13,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720921406] [2024-11-12 16:31:13,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:13,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:13,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:13,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720921406] [2024-11-12 16:31:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720921406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910328827] [2024-11-12 16:31:13,955 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:31:13,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:13,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:13,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:31:14,027 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:31:14,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:14,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:31:14,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:14,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910328827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:14,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-11-12 16:31:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709833136] [2024-11-12 16:31:14,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:14,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 16:31:14,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:14,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 16:31:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-12 16:31:14,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:14,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 470 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2024-11-12 16:31:14,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:14,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:14,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:16,695 INFO L124 PetriNetUnfolderBase]: 25824/35050 cut-off events. [2024-11-12 16:31:16,696 INFO L125 PetriNetUnfolderBase]: For 142506/142618 co-relation queries the response was YES. [2024-11-12 16:31:16,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137814 conditions, 35050 events. 25824/35050 cut-off events. For 142506/142618 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 204216 event pairs, 4056 based on Foata normal form. 870/35076 useless extension candidates. Maximal degree in co-relation 64080. Up to 9095 conditions per place. [2024-11-12 16:31:16,876 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 174 selfloop transitions, 50 changer transitions 2/231 dead transitions. [2024-11-12 16:31:16,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 231 transitions, 1918 flow [2024-11-12 16:31:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:31:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:31:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-11-12 16:31:16,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2024-11-12 16:31:16,878 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 470 flow. Second operand 10 states and 278 transitions. [2024-11-12 16:31:16,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 231 transitions, 1918 flow [2024-11-12 16:31:16,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 231 transitions, 1834 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-12 16:31:16,951 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 909 flow [2024-11-12 16:31:16,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=909, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-11-12 16:31:16,952 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-12 16:31:16,952 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 909 flow [2024-11-12 16:31:16,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2024-11-12 16:31:16,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:16,952 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] [2024-11-12 16:31:16,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:31:17,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-12 16:31:17,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:17,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1190028941, now seen corresponding path program 6 times [2024-11-12 16:31:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427446859] [2024-11-12 16:31:17,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427446859] [2024-11-12 16:31:17,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427446859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:17,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:17,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:31:17,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696056346] [2024-11-12 16:31:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:17,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:31:17,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:31:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:31:17,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:17,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 909 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:17,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:17,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:17,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:19,952 INFO L124 PetriNetUnfolderBase]: 25530/34769 cut-off events. [2024-11-12 16:31:19,952 INFO L125 PetriNetUnfolderBase]: For 200316/200397 co-relation queries the response was YES. [2024-11-12 16:31:20,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156645 conditions, 34769 events. 25530/34769 cut-off events. For 200316/200397 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 201509 event pairs, 7302 based on Foata normal form. 270/34208 useless extension candidates. Maximal degree in co-relation 133214. Up to 16460 conditions per place. [2024-11-12 16:31:20,172 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 119 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2024-11-12 16:31:20,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 1609 flow [2024-11-12 16:31:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:31:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:31:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-12 16:31:20,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-11-12 16:31:20,174 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 909 flow. Second operand 5 states and 136 transitions. [2024-11-12 16:31:20,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 1609 flow [2024-11-12 16:31:20,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 151 transitions, 1495 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-11-12 16:31:20,638 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 1006 flow [2024-11-12 16:31:20,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1006, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2024-11-12 16:31:20,639 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-12 16:31:20,639 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 1006 flow [2024-11-12 16:31:20,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:20,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:20,640 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] [2024-11-12 16:31:20,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:31:20,640 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:20,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash -520246113, now seen corresponding path program 7 times [2024-11-12 16:31:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:20,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697878102] [2024-11-12 16:31:20,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:20,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697878102] [2024-11-12 16:31:20,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697878102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503869871] [2024-11-12 16:31:20,742 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:31:20,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:20,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:20,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:31:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:20,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:31:20,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:20,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:20,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503869871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:20,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:20,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-12 16:31:20,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236982150] [2024-11-12 16:31:20,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:20,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 16:31:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 16:31:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-12 16:31:20,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:20,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 1006 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2024-11-12 16:31:20,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:20,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:20,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:23,710 INFO L124 PetriNetUnfolderBase]: 25623/34710 cut-off events. [2024-11-12 16:31:23,710 INFO L125 PetriNetUnfolderBase]: For 219825/219889 co-relation queries the response was YES. [2024-11-12 16:31:23,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161275 conditions, 34710 events. 25623/34710 cut-off events. For 219825/219889 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 198829 event pairs, 4861 based on Foata normal form. 422/34295 useless extension candidates. Maximal degree in co-relation 141177. Up to 14913 conditions per place. [2024-11-12 16:31:24,266 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 139 selfloop transitions, 45 changer transitions 6/195 dead transitions. [2024-11-12 16:31:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 195 transitions, 2010 flow [2024-11-12 16:31:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 16:31:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 16:31:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-11-12 16:31:24,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2024-11-12 16:31:24,268 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 1006 flow. Second operand 7 states and 190 transitions. [2024-11-12 16:31:24,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 195 transitions, 2010 flow [2024-11-12 16:31:24,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 195 transitions, 1864 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-11-12 16:31:24,569 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 1208 flow [2024-11-12 16:31:24,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1208, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2024-11-12 16:31:24,570 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-11-12 16:31:24,570 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 1208 flow [2024-11-12 16:31:24,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2024-11-12 16:31:24,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:24,571 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] [2024-11-12 16:31:24,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 16:31:24,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:24,776 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:24,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash -567857223, now seen corresponding path program 1 times [2024-11-12 16:31:24,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:24,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675941365] [2024-11-12 16:31:24,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:24,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:24,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675941365] [2024-11-12 16:31:24,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675941365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:24,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:24,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 16:31:24,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52396621] [2024-11-12 16:31:24,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:24,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:31:24,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:24,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:31:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 16:31:24,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:24,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 1208 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-12 16:31:24,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:24,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:28,079 INFO L124 PetriNetUnfolderBase]: 30608/41455 cut-off events. [2024-11-12 16:31:28,079 INFO L125 PetriNetUnfolderBase]: For 277896/277958 co-relation queries the response was YES. [2024-11-12 16:31:28,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197351 conditions, 41455 events. 30608/41455 cut-off events. For 277896/277958 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 242556 event pairs, 4326 based on Foata normal form. 294/40892 useless extension candidates. Maximal degree in co-relation 177509. Up to 19126 conditions per place. [2024-11-12 16:31:28,472 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 155 selfloop transitions, 38 changer transitions 5/203 dead transitions. [2024-11-12 16:31:28,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 203 transitions, 2219 flow [2024-11-12 16:31:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 16:31:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 16:31:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-12 16:31:28,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-11-12 16:31:28,474 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 1208 flow. Second operand 7 states and 186 transitions. [2024-11-12 16:31:28,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 203 transitions, 2219 flow [2024-11-12 16:31:29,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 203 transitions, 2140 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-11-12 16:31:29,015 INFO L231 Difference]: Finished difference. Result has 88 places, 118 transitions, 1395 flow [2024-11-12 16:31:29,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1395, PETRI_PLACES=88, PETRI_TRANSITIONS=118} [2024-11-12 16:31:29,016 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2024-11-12 16:31:29,016 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 118 transitions, 1395 flow [2024-11-12 16:31:29,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-12 16:31:29,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:29,017 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] [2024-11-12 16:31:29,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 16:31:29,017 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:29,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1480606745, now seen corresponding path program 1 times [2024-11-12 16:31:29,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:29,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678091074] [2024-11-12 16:31:29,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:29,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:31:29,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678091074] [2024-11-12 16:31:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678091074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:29,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:29,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:31:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549903274] [2024-11-12 16:31:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:29,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:31:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:31:29,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:31:29,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:29,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 118 transitions, 1395 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-12 16:31:29,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:29,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:29,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:33,238 INFO L124 PetriNetUnfolderBase]: 37412/50330 cut-off events. [2024-11-12 16:31:33,238 INFO L125 PetriNetUnfolderBase]: For 396323/396346 co-relation queries the response was YES. [2024-11-12 16:31:33,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244129 conditions, 50330 events. 37412/50330 cut-off events. For 396323/396346 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 299020 event pairs, 10291 based on Foata normal form. 308/49525 useless extension candidates. Maximal degree in co-relation 177388. Up to 24529 conditions per place. [2024-11-12 16:31:33,701 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 176 selfloop transitions, 49 changer transitions 4/234 dead transitions. [2024-11-12 16:31:33,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 234 transitions, 3154 flow [2024-11-12 16:31:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:31:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:31:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-12 16:31:33,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-12 16:31:33,703 INFO L175 Difference]: Start difference. First operand has 88 places, 118 transitions, 1395 flow. Second operand 5 states and 131 transitions. [2024-11-12 16:31:33,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 234 transitions, 3154 flow [2024-11-12 16:31:34,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 234 transitions, 3010 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-11-12 16:31:34,821 INFO L231 Difference]: Finished difference. Result has 93 places, 146 transitions, 1816 flow [2024-11-12 16:31:34,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1816, PETRI_PLACES=93, PETRI_TRANSITIONS=146} [2024-11-12 16:31:34,822 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-11-12 16:31:34,822 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 146 transitions, 1816 flow [2024-11-12 16:31:34,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-12 16:31:34,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:34,822 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] [2024-11-12 16:31:34,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 16:31:34,823 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:34,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1992162283, now seen corresponding path program 2 times [2024-11-12 16:31:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:34,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074679517] [2024-11-12 16:31:34,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:34,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074679517] [2024-11-12 16:31:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074679517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:34,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 16:31:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297045199] [2024-11-12 16:31:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:34,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:31:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:31:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 16:31:34,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:34,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 146 transitions, 1816 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-12 16:31:34,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:34,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:34,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:40,233 INFO L124 PetriNetUnfolderBase]: 48183/65258 cut-off events. [2024-11-12 16:31:40,233 INFO L125 PetriNetUnfolderBase]: For 553971/554045 co-relation queries the response was YES. [2024-11-12 16:31:40,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339748 conditions, 65258 events. 48183/65258 cut-off events. For 553971/554045 co-relation queries the response was YES. Maximal size of possible extension queue 2708. Compared 408352 event pairs, 5935 based on Foata normal form. 1782/65502 useless extension candidates. Maximal degree in co-relation 247759. Up to 21745 conditions per place. [2024-11-12 16:31:41,088 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 197 selfloop transitions, 75 changer transitions 5/282 dead transitions. [2024-11-12 16:31:41,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 282 transitions, 3674 flow [2024-11-12 16:31:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 16:31:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 16:31:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-11-12 16:31:41,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6360544217687075 [2024-11-12 16:31:41,090 INFO L175 Difference]: Start difference. First operand has 93 places, 146 transitions, 1816 flow. Second operand 7 states and 187 transitions. [2024-11-12 16:31:41,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 282 transitions, 3674 flow [2024-11-12 16:31:42,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 282 transitions, 3577 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-11-12 16:31:42,501 INFO L231 Difference]: Finished difference. Result has 102 places, 161 transitions, 2214 flow [2024-11-12 16:31:42,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2214, PETRI_PLACES=102, PETRI_TRANSITIONS=161} [2024-11-12 16:31:42,502 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-11-12 16:31:42,502 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 161 transitions, 2214 flow [2024-11-12 16:31:42,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-12 16:31:42,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:42,502 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] [2024-11-12 16:31:42,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 16:31:42,503 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:31:42,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash -760596053, now seen corresponding path program 3 times [2024-11-12 16:31:42,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:42,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501116865] [2024-11-12 16:31:42,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:42,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:31:42,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501116865] [2024-11-12 16:31:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501116865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:42,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:42,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:31:42,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455710332] [2024-11-12 16:31:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:42,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:31:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:31:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:31:42,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:31:42,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 161 transitions, 2214 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-12 16:31:42,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:42,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:31:42,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand