./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:57:22,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:57:22,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:57:22,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:57:22,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:57:22,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:57:22,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:57:22,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:57:22,905 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:57:22,907 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:57:22,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:57:22,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:57:22,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:57:22,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:57:22,909 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:57:22,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:57:22,912 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:57:22,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:57:22,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:57:22,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:57:22,913 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:57:22,913 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:57:22,914 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:57:22,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:57:22,914 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:57:22,914 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:57:22,915 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:57:22,915 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:57:22,915 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:57:22,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:57:22,917 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:57:22,917 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:57:22,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:57:22,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:22,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:57:22,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:57:22,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:57:22,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:57:22,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:57:22,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:57:22,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:57:22,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:57:22,921 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-11 19:57:23,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:57:23,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:57:23,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:57:23,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:57:23,230 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:57:23,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-11 19:57:24,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:57:24,804 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:57:24,805 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-11 19:57:24,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1fd5018f3/2e7c249e378048568475a2ced18e46c0/FLAG9464fa6c2 [2024-10-11 19:57:25,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1fd5018f3/2e7c249e378048568475a2ced18e46c0 [2024-10-11 19:57:25,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:57:25,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:57:25,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:25,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:57:25,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:57:25,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54464850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25, skipping insertion in model container [2024-10-11 19:57:25,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:57:25,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:25,476 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:57:25,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:25,515 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:57:25,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25 WrapperNode [2024-10-11 19:57:25,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:25,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:57:25,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:57:25,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:57:25,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,560 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 103 [2024-10-11 19:57:25,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:57:25,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:57:25,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:57:25,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:57:25,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,593 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]. [2024-10-11 19:57:25,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:57:25,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:57:25,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:57:25,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:57:25,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (1/1) ... [2024-10-11 19:57:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:25,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:25,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:57:25,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:57:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:57:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:57:25,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:57:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:57:25,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:57:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:57:25,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:57:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 19:57:25,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 19:57:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:57:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:57:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:57:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:57:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:57:25,709 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:57:25,804 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:57:25,806 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:57:26,043 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:57:26,043 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:57:26,167 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:57:26,167 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:57:26,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:57:26 BoogieIcfgContainer [2024-10-11 19:57:26,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:57:26,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:57:26,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:57:26,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:57:26,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:57:25" (1/3) ... [2024-10-11 19:57:26,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6414df13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:57:26, skipping insertion in model container [2024-10-11 19:57:26,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:25" (2/3) ... [2024-10-11 19:57:26,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6414df13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:57:26, skipping insertion in model container [2024-10-11 19:57:26,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:57:26" (3/3) ... [2024-10-11 19:57:26,177 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-11 19:57:26,192 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:57:26,192 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:57:26,193 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:57:26,263 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 19:57:26,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-10-11 19:57:26,333 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-11 19:57:26,333 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:57:26,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-11 19:57:26,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-10-11 19:57:26,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-10-11 19:57:26,352 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:57:26,358 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;@37361837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:57:26,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 19:57:26,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:57:26,372 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-11 19:57:26,372 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:57:26,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:26,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:26,373 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)] === [2024-10-11 19:57:26,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash 761883615, now seen corresponding path program 1 times [2024-10-11 19:57:26,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:26,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659622236] [2024-10-11 19:57:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:26,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:26,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:26,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659622236] [2024-10-11 19:57:26,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659622236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:26,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:26,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:57:26,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521986288] [2024-10-11 19:57:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:26,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:57:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:57:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:57:26,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-11 19:57:26,772 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) [2024-10-11 19:57:26,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:26,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-11 19:57:26,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:27,323 INFO L124 PetriNetUnfolderBase]: 3331/4539 cut-off events. [2024-10-11 19:57:27,324 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-10-11 19:57:27,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9282 conditions, 4539 events. 3331/4539 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19502 event pairs, 587 based on Foata normal form. 2/4501 useless extension candidates. Maximal degree in co-relation 8232. Up to 3534 conditions per place. [2024-10-11 19:57:27,363 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-10-11 19:57:27,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-10-11 19:57:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:57:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:57:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-11 19:57:27,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-10-11 19:57:27,378 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2024-10-11 19:57:27,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-10-11 19:57:27,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 19:57:27,392 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-10-11 19:57:27,395 INFO L260 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=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-10-11 19:57:27,400 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-10-11 19:57:27,401 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-10-11 19:57:27,402 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) [2024-10-11 19:57:27,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:27,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:27,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:57:27,403 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)] === [2024-10-11 19:57:27,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1153886800, now seen corresponding path program 1 times [2024-10-11 19:57:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:27,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266292427] [2024-10-11 19:57:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:27,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266292427] [2024-10-11 19:57:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266292427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:27,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626935138] [2024-10-11 19:57:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:27,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:27,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:27,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-11 19:57:27,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:27,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:27,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-11 19:57:27,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:28,458 INFO L124 PetriNetUnfolderBase]: 6572/8811 cut-off events. [2024-10-11 19:57:28,459 INFO L125 PetriNetUnfolderBase]: For 1451/1463 co-relation queries the response was YES. [2024-10-11 19:57:28,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20003 conditions, 8811 events. 6572/8811 cut-off events. For 1451/1463 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 42947 event pairs, 2102 based on Foata normal form. 100/8377 useless extension candidates. Maximal degree in co-relation 3473. Up to 4936 conditions per place. [2024-10-11 19:57:28,514 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 95 selfloop transitions, 7 changer transitions 0/106 dead transitions. [2024-10-11 19:57:28,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 106 transitions, 508 flow [2024-10-11 19:57:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-11 19:57:28,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-10-11 19:57:28,516 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 134 transitions. [2024-10-11 19:57:28,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 106 transitions, 508 flow [2024-10-11 19:57:28,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 106 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:28,520 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 154 flow [2024-10-11 19:57:28,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-10-11 19:57:28,521 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-10-11 19:57:28,521 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 154 flow [2024-10-11 19:57:28,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:28,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:28,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:28,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:57:28,521 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)] === [2024-10-11 19:57:28,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1888282566, now seen corresponding path program 2 times [2024-10-11 19:57:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:28,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94943965] [2024-10-11 19:57:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:28,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94943965] [2024-10-11 19:57:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94943965] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405576097] [2024-10-11 19:57:28,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:57:28,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:28,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:28,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:57:28,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:57:28,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:28,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 19:57:28,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:28,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:28,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405576097] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:28,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:28,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-11 19:57:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205481157] [2024-10-11 19:57:28,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:28,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:57:28,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:57:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:57:28,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-11 19:57:28,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 154 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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) [2024-10-11 19:57:28,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:28,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-11 19:57:28,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:30,487 INFO L124 PetriNetUnfolderBase]: 11011/14442 cut-off events. [2024-10-11 19:57:30,487 INFO L125 PetriNetUnfolderBase]: For 4717/4717 co-relation queries the response was YES. [2024-10-11 19:57:30,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37338 conditions, 14442 events. 11011/14442 cut-off events. For 4717/4717 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 70891 event pairs, 1013 based on Foata normal form. 180/14250 useless extension candidates. Maximal degree in co-relation 25230. Up to 3147 conditions per place. [2024-10-11 19:57:30,573 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 232 selfloop transitions, 28 changer transitions 0/263 dead transitions. [2024-10-11 19:57:30,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 263 transitions, 1299 flow [2024-10-11 19:57:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:57:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:57:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 353 transitions. [2024-10-11 19:57:30,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6003401360544217 [2024-10-11 19:57:30,577 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 154 flow. Second operand 14 states and 353 transitions. [2024-10-11 19:57:30,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 263 transitions, 1299 flow [2024-10-11 19:57:30,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 263 transitions, 1299 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:57:30,600 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 317 flow [2024-10-11 19:57:30,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=317, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-10-11 19:57:30,603 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-10-11 19:57:30,603 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 317 flow [2024-10-11 19:57:30,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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) [2024-10-11 19:57:30,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:30,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:30,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:57:30,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:30,805 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)] === [2024-10-11 19:57:30,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1201323686, now seen corresponding path program 3 times [2024-10-11 19:57:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:30,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106478796] [2024-10-11 19:57:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:30,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:30,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106478796] [2024-10-11 19:57:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106478796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:30,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74364982] [2024-10-11 19:57:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:30,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:30,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-11 19:57:30,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:30,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:30,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-11 19:57:30,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:32,633 INFO L124 PetriNetUnfolderBase]: 14457/19517 cut-off events. [2024-10-11 19:57:32,634 INFO L125 PetriNetUnfolderBase]: For 25746/25878 co-relation queries the response was YES. [2024-10-11 19:57:32,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58178 conditions, 19517 events. 14457/19517 cut-off events. For 25746/25878 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 105581 event pairs, 4007 based on Foata normal form. 60/19330 useless extension candidates. Maximal degree in co-relation 42613. Up to 9113 conditions per place. [2024-10-11 19:57:32,757 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 117 selfloop transitions, 15 changer transitions 0/143 dead transitions. [2024-10-11 19:57:32,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 143 transitions, 902 flow [2024-10-11 19:57:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-11 19:57:32,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-10-11 19:57:32,759 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 317 flow. Second operand 5 states and 131 transitions. [2024-10-11 19:57:32,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 143 transitions, 902 flow [2024-10-11 19:57:33,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 143 transitions, 843 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-11 19:57:33,057 INFO L231 Difference]: Finished difference. Result has 66 places, 74 transitions, 392 flow [2024-10-11 19:57:33,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=66, PETRI_TRANSITIONS=74} [2024-10-11 19:57:33,058 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-10-11 19:57:33,059 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 74 transitions, 392 flow [2024-10-11 19:57:33,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:33,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:33,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:33,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:57:33,060 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)] === [2024-10-11 19:57:33,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1338683045, now seen corresponding path program 1 times [2024-10-11 19:57:33,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:33,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828554777] [2024-10-11 19:57:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:33,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:33,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828554777] [2024-10-11 19:57:33,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828554777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:33,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:57:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281564169] [2024-10-11 19:57:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:33,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:57:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:57:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:57:33,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-11 19:57:33,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 74 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-11 19:57:33,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:33,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-11 19:57:33,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:33,987 INFO L124 PetriNetUnfolderBase]: 9905/13694 cut-off events. [2024-10-11 19:57:33,987 INFO L125 PetriNetUnfolderBase]: For 23304/23888 co-relation queries the response was YES. [2024-10-11 19:57:34,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42663 conditions, 13694 events. 9905/13694 cut-off events. For 23304/23888 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 73981 event pairs, 3463 based on Foata normal form. 413/13962 useless extension candidates. Maximal degree in co-relation 30349. Up to 8421 conditions per place. [2024-10-11 19:57:34,065 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-10-11 19:57:34,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 666 flow [2024-10-11 19:57:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:57:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:57:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-11 19:57:34,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-10-11 19:57:34,070 INFO L175 Difference]: Start difference. First operand has 66 places, 74 transitions, 392 flow. Second operand 3 states and 85 transitions. [2024-10-11 19:57:34,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 666 flow [2024-10-11 19:57:34,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 639 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:34,217 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 387 flow [2024-10-11 19:57:34,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2024-10-11 19:57:34,222 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-10-11 19:57:34,222 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 387 flow [2024-10-11 19:57:34,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-11 19:57:34,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:34,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:34,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:57:34,223 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)] === [2024-10-11 19:57:34,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:34,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1339020764, now seen corresponding path program 4 times [2024-10-11 19:57:34,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756058943] [2024-10-11 19:57:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:34,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:34,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756058943] [2024-10-11 19:57:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756058943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:34,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:34,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219639590] [2024-10-11 19:57:34,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:34,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:34,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:34,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:34,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-11 19:57:34,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:34,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:34,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-11 19:57:34,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:35,658 INFO L124 PetriNetUnfolderBase]: 13567/18460 cut-off events. [2024-10-11 19:57:35,658 INFO L125 PetriNetUnfolderBase]: For 28517/28677 co-relation queries the response was YES. [2024-10-11 19:57:35,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57802 conditions, 18460 events. 13567/18460 cut-off events. For 28517/28677 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 100589 event pairs, 5068 based on Foata normal form. 42/18257 useless extension candidates. Maximal degree in co-relation 46209. Up to 11926 conditions per place. [2024-10-11 19:57:35,763 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 104 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2024-10-11 19:57:35,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 136 transitions, 896 flow [2024-10-11 19:57:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-10-11 19:57:35,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-11 19:57:35,766 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 387 flow. Second operand 5 states and 132 transitions. [2024-10-11 19:57:35,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 136 transitions, 896 flow [2024-10-11 19:57:35,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 889 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:35,865 INFO L231 Difference]: Finished difference. Result has 74 places, 84 transitions, 539 flow [2024-10-11 19:57:35,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2024-10-11 19:57:35,866 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-10-11 19:57:35,866 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 84 transitions, 539 flow [2024-10-11 19:57:35,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:35,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:35,867 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:35,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:57:35,867 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)] === [2024-10-11 19:57:35,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1393481940, now seen corresponding path program 5 times [2024-10-11 19:57:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203589315] [2024-10-11 19:57:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:35,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:35,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:35,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203589315] [2024-10-11 19:57:35,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203589315] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:35,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711299914] [2024-10-11 19:57:35,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:57:35,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:35,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:35,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:57:36,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:57:36,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:36,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 19:57:36,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:36,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:36,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711299914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:36,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:36,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 19:57:36,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28957127] [2024-10-11 19:57:36,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:36,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:57:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:57:36,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:57:36,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-11 19:57:36,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 84 transitions, 539 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 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) [2024-10-11 19:57:36,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:36,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-11 19:57:36,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:38,069 INFO L124 PetriNetUnfolderBase]: 16753/22207 cut-off events. [2024-10-11 19:57:38,069 INFO L125 PetriNetUnfolderBase]: For 44168/44171 co-relation queries the response was YES. [2024-10-11 19:57:38,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71952 conditions, 22207 events. 16753/22207 cut-off events. For 44168/44171 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 113928 event pairs, 3611 based on Foata normal form. 334/22448 useless extension candidates. Maximal degree in co-relation 59457. Up to 7706 conditions per place. [2024-10-11 19:57:38,190 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 158 selfloop transitions, 46 changer transitions 0/207 dead transitions. [2024-10-11 19:57:38,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 207 transitions, 1450 flow [2024-10-11 19:57:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:57:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:57:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-10-11 19:57:38,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-10-11 19:57:38,191 INFO L175 Difference]: Start difference. First operand has 74 places, 84 transitions, 539 flow. Second operand 8 states and 207 transitions. [2024-10-11 19:57:38,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 207 transitions, 1450 flow [2024-10-11 19:57:38,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 207 transitions, 1415 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:38,325 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 809 flow [2024-10-11 19:57:38,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=809, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2024-10-11 19:57:38,325 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-10-11 19:57:38,326 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 809 flow [2024-10-11 19:57:38,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 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) [2024-10-11 19:57:38,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:38,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:38,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:57:38,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:38,527 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)] === [2024-10-11 19:57:38,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:38,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2098246889, now seen corresponding path program 1 times [2024-10-11 19:57:38,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:38,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664249794] [2024-10-11 19:57:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:38,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:38,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664249794] [2024-10-11 19:57:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664249794] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:38,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:57:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662693071] [2024-10-11 19:57:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:38,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:57:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:57:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:57:38,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-11 19:57:38,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 809 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-11 19:57:38,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:38,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-11 19:57:38,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:39,519 INFO L124 PetriNetUnfolderBase]: 9738/13561 cut-off events. [2024-10-11 19:57:39,519 INFO L125 PetriNetUnfolderBase]: For 39006/39674 co-relation queries the response was YES. [2024-10-11 19:57:39,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48886 conditions, 13561 events. 9738/13561 cut-off events. For 39006/39674 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 73551 event pairs, 2815 based on Foata normal form. 333/13773 useless extension candidates. Maximal degree in co-relation 41126. Up to 7769 conditions per place. [2024-10-11 19:57:39,596 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 101 selfloop transitions, 3 changer transitions 3/131 dead transitions. [2024-10-11 19:57:39,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 1192 flow [2024-10-11 19:57:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:57:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:57:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-11 19:57:39,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-10-11 19:57:39,598 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 809 flow. Second operand 3 states and 81 transitions. [2024-10-11 19:57:39,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 1192 flow [2024-10-11 19:57:39,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1145 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:39,829 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 743 flow [2024-10-11 19:57:39,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=743, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2024-10-11 19:57:39,829 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-10-11 19:57:39,830 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 743 flow [2024-10-11 19:57:39,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-11 19:57:39,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:39,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:39,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:57:39,830 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)] === [2024-10-11 19:57:39,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:39,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2146662114, now seen corresponding path program 1 times [2024-10-11 19:57:39,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:39,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378227145] [2024-10-11 19:57:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:39,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:39,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:39,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378227145] [2024-10-11 19:57:39,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378227145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:39,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:39,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701624852] [2024-10-11 19:57:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:39,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:39,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:39,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-11 19:57:39,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:39,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:39,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-11 19:57:39,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:41,089 INFO L124 PetriNetUnfolderBase]: 11261/15275 cut-off events. [2024-10-11 19:57:41,089 INFO L125 PetriNetUnfolderBase]: For 35782/36264 co-relation queries the response was YES. [2024-10-11 19:57:41,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55459 conditions, 15275 events. 11261/15275 cut-off events. For 35782/36264 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 79585 event pairs, 4036 based on Foata normal form. 36/15263 useless extension candidates. Maximal degree in co-relation 50711. Up to 8870 conditions per place. [2024-10-11 19:57:41,186 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 116 selfloop transitions, 17 changer transitions 16/156 dead transitions. [2024-10-11 19:57:41,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 156 transitions, 1263 flow [2024-10-11 19:57:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:41,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-10-11 19:57:41,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-11 19:57:41,188 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 743 flow. Second operand 5 states and 133 transitions. [2024-10-11 19:57:41,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 156 transitions, 1263 flow [2024-10-11 19:57:41,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 156 transitions, 1251 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 19:57:41,308 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 779 flow [2024-10-11 19:57:41,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=779, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-10-11 19:57:41,309 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2024-10-11 19:57:41,309 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 779 flow [2024-10-11 19:57:41,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:41,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:41,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:41,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:57:41,310 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)] === [2024-10-11 19:57:41,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash 239244034, now seen corresponding path program 2 times [2024-10-11 19:57:41,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:41,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494143984] [2024-10-11 19:57:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:41,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494143984] [2024-10-11 19:57:41,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494143984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457434603] [2024-10-11 19:57:41,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:57:41,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:41,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:41,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:41,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:57:41,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:57:41,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:41,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 19:57:41,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:41,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457434603] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:41,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:41,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-11 19:57:41,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830026218] [2024-10-11 19:57:41,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:41,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:57:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:41,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:57:41,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:57:41,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-11 19:57:41,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 779 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 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) [2024-10-11 19:57:41,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:41,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-11 19:57:41,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:43,342 INFO L124 PetriNetUnfolderBase]: 15188/20179 cut-off events. [2024-10-11 19:57:43,342 INFO L125 PetriNetUnfolderBase]: For 44277/44277 co-relation queries the response was YES. [2024-10-11 19:57:43,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72506 conditions, 20179 events. 15188/20179 cut-off events. For 44277/44277 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 101477 event pairs, 815 based on Foata normal form. 120/20298 useless extension candidates. Maximal degree in co-relation 65336. Up to 3687 conditions per place. [2024-10-11 19:57:43,462 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 223 selfloop transitions, 80 changer transitions 2/308 dead transitions. [2024-10-11 19:57:43,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 308 transitions, 2324 flow [2024-10-11 19:57:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:57:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:57:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 333 transitions. [2024-10-11 19:57:43,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5663265306122449 [2024-10-11 19:57:43,464 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 779 flow. Second operand 14 states and 333 transitions. [2024-10-11 19:57:43,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 308 transitions, 2324 flow [2024-10-11 19:57:43,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 308 transitions, 2269 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 19:57:43,748 INFO L231 Difference]: Finished difference. Result has 103 places, 136 transitions, 1269 flow [2024-10-11 19:57:43,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1269, PETRI_PLACES=103, PETRI_TRANSITIONS=136} [2024-10-11 19:57:43,748 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2024-10-11 19:57:43,749 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 136 transitions, 1269 flow [2024-10-11 19:57:43,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 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) [2024-10-11 19:57:43,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:43,749 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:43,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:43,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:43,950 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)] === [2024-10-11 19:57:43,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 555537916, now seen corresponding path program 6 times [2024-10-11 19:57:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685756950] [2024-10-11 19:57:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:44,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:44,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685756950] [2024-10-11 19:57:44,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685756950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:44,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:44,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252782195] [2024-10-11 19:57:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:44,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:44,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-11 19:57:44,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 136 transitions, 1269 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-11 19:57:44,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:44,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-11 19:57:44,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:45,630 INFO L124 PetriNetUnfolderBase]: 14924/19875 cut-off events. [2024-10-11 19:57:45,630 INFO L125 PetriNetUnfolderBase]: For 58703/58718 co-relation queries the response was YES. [2024-10-11 19:57:45,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76595 conditions, 19875 events. 14924/19875 cut-off events. For 58703/58718 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 100934 event pairs, 5668 based on Foata normal form. 113/19977 useless extension candidates. Maximal degree in co-relation 71603. Up to 12762 conditions per place. [2024-10-11 19:57:45,736 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 144 selfloop transitions, 32 changer transitions 0/179 dead transitions. [2024-10-11 19:57:45,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 179 transitions, 1749 flow [2024-10-11 19:57:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-11 19:57:45,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-10-11 19:57:45,738 INFO L175 Difference]: Start difference. First operand has 103 places, 136 transitions, 1269 flow. Second operand 5 states and 129 transitions. [2024-10-11 19:57:45,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 179 transitions, 1749 flow [2024-10-11 19:57:46,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 179 transitions, 1619 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-10-11 19:57:46,129 INFO L231 Difference]: Finished difference. Result has 101 places, 133 transitions, 1170 flow [2024-10-11 19:57:46,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1170, PETRI_PLACES=101, PETRI_TRANSITIONS=133} [2024-10-11 19:57:46,130 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2024-10-11 19:57:46,130 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 133 transitions, 1170 flow [2024-10-11 19:57:46,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-11 19:57:46,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:46,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:46,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 19:57:46,131 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)] === [2024-10-11 19:57:46,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1775846514, now seen corresponding path program 3 times [2024-10-11 19:57:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528776060] [2024-10-11 19:57:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:46,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:46,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:46,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528776060] [2024-10-11 19:57:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528776060] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:46,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 19:57:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616781759] [2024-10-11 19:57:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:46,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:57:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:46,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:57:46,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:57:46,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-11 19:57:46,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 133 transitions, 1170 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-11 19:57:46,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:46,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-11 19:57:46,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:47,771 INFO L124 PetriNetUnfolderBase]: 15292/20360 cut-off events. [2024-10-11 19:57:47,771 INFO L125 PetriNetUnfolderBase]: For 58578/58593 co-relation queries the response was YES. [2024-10-11 19:57:47,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75830 conditions, 20360 events. 15292/20360 cut-off events. For 58578/58593 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 103743 event pairs, 5656 based on Foata normal form. 123/20475 useless extension candidates. Maximal degree in co-relation 72633. Up to 12762 conditions per place. [2024-10-11 19:57:47,913 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 155 selfloop transitions, 40 changer transitions 0/198 dead transitions. [2024-10-11 19:57:47,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1805 flow [2024-10-11 19:57:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:57:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:57:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-10-11 19:57:47,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-10-11 19:57:47,914 INFO L175 Difference]: Start difference. First operand has 101 places, 133 transitions, 1170 flow. Second operand 6 states and 151 transitions. [2024-10-11 19:57:47,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1805 flow [2024-10-11 19:57:48,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 198 transitions, 1717 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 19:57:48,315 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1228 flow [2024-10-11 19:57:48,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1228, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-10-11 19:57:48,316 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2024-10-11 19:57:48,316 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1228 flow [2024-10-11 19:57:48,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-11 19:57:48,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:48,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:48,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 19:57:48,317 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)] === [2024-10-11 19:57:48,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1277745496, now seen corresponding path program 7 times [2024-10-11 19:57:48,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032770615] [2024-10-11 19:57:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:48,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:48,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:48,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032770615] [2024-10-11 19:57:48,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032770615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:48,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367588390] [2024-10-11 19:57:48,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 19:57:48,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:48,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:48,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:48,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:57:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:48,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 19:57:48,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:48,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367588390] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:48,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 19:57:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797917476] [2024-10-11 19:57:48,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:48,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:57:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:57:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:57:48,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-11 19:57:48,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1228 flow. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 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) [2024-10-11 19:57:48,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:48,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-11 19:57:48,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:50,529 INFO L124 PetriNetUnfolderBase]: 17917/23845 cut-off events. [2024-10-11 19:57:50,529 INFO L125 PetriNetUnfolderBase]: For 59864/59864 co-relation queries the response was YES. [2024-10-11 19:57:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87991 conditions, 23845 events. 17917/23845 cut-off events. For 59864/59864 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 124545 event pairs, 1377 based on Foata normal form. 143/23977 useless extension candidates. Maximal degree in co-relation 84658. Up to 4523 conditions per place. [2024-10-11 19:57:50,753 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 254 selfloop transitions, 85 changer transitions 1/343 dead transitions. [2024-10-11 19:57:50,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 343 transitions, 2706 flow [2024-10-11 19:57:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:57:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:57:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 372 transitions. [2024-10-11 19:57:50,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-10-11 19:57:50,755 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1228 flow. Second operand 15 states and 372 transitions. [2024-10-11 19:57:50,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 343 transitions, 2706 flow [2024-10-11 19:57:51,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 343 transitions, 2644 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 19:57:51,546 INFO L231 Difference]: Finished difference. Result has 117 places, 152 transitions, 1516 flow [2024-10-11 19:57:51,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1516, PETRI_PLACES=117, PETRI_TRANSITIONS=152} [2024-10-11 19:57:51,547 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-10-11 19:57:51,547 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 152 transitions, 1516 flow [2024-10-11 19:57:51,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 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) [2024-10-11 19:57:51,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:51,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:51,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:51,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 19:57:51,748 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:57:51,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1442137096, now seen corresponding path program 4 times [2024-10-11 19:57:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401283272] [2024-10-11 19:57:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:51,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:51,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:51,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401283272] [2024-10-11 19:57:51,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401283272] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:51,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:51,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:51,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366713520] [2024-10-11 19:57:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:51,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:51,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:51,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-11 19:57:51,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 152 transitions, 1516 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:51,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:51,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-11 19:57:51,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:53,887 INFO L124 PetriNetUnfolderBase]: 16479/22252 cut-off events. [2024-10-11 19:57:53,887 INFO L125 PetriNetUnfolderBase]: For 77809/78145 co-relation queries the response was YES. [2024-10-11 19:57:53,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86094 conditions, 22252 events. 16479/22252 cut-off events. For 77809/78145 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 120854 event pairs, 6553 based on Foata normal form. 39/22195 useless extension candidates. Maximal degree in co-relation 80794. Up to 14982 conditions per place. [2024-10-11 19:57:54,017 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 134 selfloop transitions, 28 changer transitions 10/196 dead transitions. [2024-10-11 19:57:54,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 196 transitions, 2004 flow [2024-10-11 19:57:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-11 19:57:54,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-11 19:57:54,019 INFO L175 Difference]: Start difference. First operand has 117 places, 152 transitions, 1516 flow. Second operand 5 states and 126 transitions. [2024-10-11 19:57:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 196 transitions, 2004 flow [2024-10-11 19:57:54,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1937 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-10-11 19:57:54,517 INFO L231 Difference]: Finished difference. Result has 116 places, 151 transitions, 1495 flow [2024-10-11 19:57:54,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1495, PETRI_PLACES=116, PETRI_TRANSITIONS=151} [2024-10-11 19:57:54,517 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-11 19:57:54,518 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 151 transitions, 1495 flow [2024-10-11 19:57:54,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:54,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:54,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:54,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 19:57:54,518 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:57:54,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1829548382, now seen corresponding path program 8 times [2024-10-11 19:57:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406604538] [2024-10-11 19:57:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:54,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406604538] [2024-10-11 19:57:54,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406604538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:54,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267363524] [2024-10-11 19:57:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:54,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:54,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:54,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:54,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-11 19:57:54,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 151 transitions, 1495 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:54,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:54,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-11 19:57:54,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:56,209 INFO L124 PetriNetUnfolderBase]: 15411/21004 cut-off events. [2024-10-11 19:57:56,210 INFO L125 PetriNetUnfolderBase]: For 79873/80033 co-relation queries the response was YES. [2024-10-11 19:57:56,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82594 conditions, 21004 events. 15411/21004 cut-off events. For 79873/80033 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 115314 event pairs, 4211 based on Foata normal form. 24/20810 useless extension candidates. Maximal degree in co-relation 77535. Up to 9513 conditions per place. [2024-10-11 19:57:56,321 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 121 selfloop transitions, 35 changer transitions 9/191 dead transitions. [2024-10-11 19:57:56,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 191 transitions, 1984 flow [2024-10-11 19:57:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:56,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-11 19:57:56,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-10-11 19:57:56,322 INFO L175 Difference]: Start difference. First operand has 116 places, 151 transitions, 1495 flow. Second operand 5 states and 123 transitions. [2024-10-11 19:57:56,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 191 transitions, 1984 flow [2024-10-11 19:57:56,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 191 transitions, 1924 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 19:57:56,791 INFO L231 Difference]: Finished difference. Result has 116 places, 150 transitions, 1503 flow [2024-10-11 19:57:56,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1503, PETRI_PLACES=116, PETRI_TRANSITIONS=150} [2024-10-11 19:57:56,792 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-11 19:57:56,792 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 150 transitions, 1503 flow [2024-10-11 19:57:56,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:56,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:56,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:56,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 19:57:56,792 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:57:56,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1928174366, now seen corresponding path program 5 times [2024-10-11 19:57:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:56,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323174056] [2024-10-11 19:57:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:56,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:56,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323174056] [2024-10-11 19:57:56,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323174056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:56,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:56,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 19:57:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731073362] [2024-10-11 19:57:56,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:56,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:57:56,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:57:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:57:56,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-11 19:57:56,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 150 transitions, 1503 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-11 19:57:56,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:56,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-11 19:57:56,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:59,035 INFO L124 PetriNetUnfolderBase]: 18985/25193 cut-off events. [2024-10-11 19:57:59,035 INFO L125 PetriNetUnfolderBase]: For 85627/85630 co-relation queries the response was YES. [2024-10-11 19:57:59,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96868 conditions, 25193 events. 18985/25193 cut-off events. For 85627/85630 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 131051 event pairs, 4855 based on Foata normal form. 120/25294 useless extension candidates. Maximal degree in co-relation 93390. Up to 10797 conditions per place. [2024-10-11 19:57:59,161 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 169 selfloop transitions, 44 changer transitions 1/217 dead transitions. [2024-10-11 19:57:59,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 217 transitions, 2232 flow [2024-10-11 19:57:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:57:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:57:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-10-11 19:57:59,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-10-11 19:57:59,162 INFO L175 Difference]: Start difference. First operand has 116 places, 150 transitions, 1503 flow. Second operand 6 states and 151 transitions. [2024-10-11 19:57:59,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 217 transitions, 2232 flow [2024-10-11 19:57:59,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 217 transitions, 2142 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-11 19:57:59,762 INFO L231 Difference]: Finished difference. Result has 116 places, 155 transitions, 1583 flow [2024-10-11 19:57:59,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1583, PETRI_PLACES=116, PETRI_TRANSITIONS=155} [2024-10-11 19:57:59,763 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-11 19:57:59,763 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 155 transitions, 1583 flow [2024-10-11 19:57:59,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-11 19:57:59,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:59,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:59,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 19:57:59,764 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:57:59,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 969469390, now seen corresponding path program 6 times [2024-10-11 19:57:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755226044] [2024-10-11 19:57:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:59,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755226044] [2024-10-11 19:57:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755226044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:59,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:59,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:59,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391643927] [2024-10-11 19:57:59,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:59,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:59,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:59,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-11 19:57:59,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 155 transitions, 1583 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:57:59,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:59,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-11 19:57:59,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:01,593 INFO L124 PetriNetUnfolderBase]: 16612/22301 cut-off events. [2024-10-11 19:58:01,593 INFO L125 PetriNetUnfolderBase]: For 84741/85151 co-relation queries the response was YES. [2024-10-11 19:58:01,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86913 conditions, 22301 events. 16612/22301 cut-off events. For 84741/85151 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 119312 event pairs, 5023 based on Foata normal form. 36/22191 useless extension candidates. Maximal degree in co-relation 83848. Up to 11261 conditions per place. [2024-10-11 19:58:01,724 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 126 selfloop transitions, 34 changer transitions 10/195 dead transitions. [2024-10-11 19:58:01,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 195 transitions, 2054 flow [2024-10-11 19:58:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:58:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:58:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-11 19:58:01,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-10-11 19:58:01,725 INFO L175 Difference]: Start difference. First operand has 116 places, 155 transitions, 1583 flow. Second operand 5 states and 123 transitions. [2024-10-11 19:58:01,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 195 transitions, 2054 flow [2024-10-11 19:58:02,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1965 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-11 19:58:02,208 INFO L231 Difference]: Finished difference. Result has 115 places, 154 transitions, 1547 flow [2024-10-11 19:58:02,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1547, PETRI_PLACES=115, PETRI_TRANSITIONS=154} [2024-10-11 19:58:02,208 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-10-11 19:58:02,209 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 154 transitions, 1547 flow [2024-10-11 19:58:02,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-11 19:58:02,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:02,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:02,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 19:58:02,209 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:58:02,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash 919452349, now seen corresponding path program 1 times [2024-10-11 19:58:02,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:02,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871410962] [2024-10-11 19:58:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871410962] [2024-10-11 19:58:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871410962] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29485714] [2024-10-11 19:58:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:02,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:02,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:02,314 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:58:02,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:58:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:02,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:58:02,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:02,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:02,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29485714] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:02,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:58:02,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-10-11 19:58:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931601625] [2024-10-11 19:58:02,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:02,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 19:58:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 19:58:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:58:02,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-11 19:58:02,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 154 transitions, 1547 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2024-10-11 19:58:02,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:02,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-11 19:58:02,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:06,859 INFO L124 PetriNetUnfolderBase]: 37879/52977 cut-off events. [2024-10-11 19:58:06,859 INFO L125 PetriNetUnfolderBase]: For 242968/244431 co-relation queries the response was YES. [2024-10-11 19:58:07,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200636 conditions, 52977 events. 37879/52977 cut-off events. For 242968/244431 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 334294 event pairs, 3699 based on Foata normal form. 1659/54506 useless extension candidates. Maximal degree in co-relation 172131. Up to 19108 conditions per place. [2024-10-11 19:58:07,235 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 398 selfloop transitions, 22 changer transitions 4/472 dead transitions. [2024-10-11 19:58:07,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 472 transitions, 5388 flow [2024-10-11 19:58:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 19:58:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 19:58:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-10-11 19:58:07,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7517006802721088 [2024-10-11 19:58:07,236 INFO L175 Difference]: Start difference. First operand has 115 places, 154 transitions, 1547 flow. Second operand 7 states and 221 transitions. [2024-10-11 19:58:07,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 472 transitions, 5388 flow [2024-10-11 19:58:10,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 472 transitions, 5114 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 19:58:10,123 INFO L231 Difference]: Finished difference. Result has 118 places, 173 transitions, 1670 flow [2024-10-11 19:58:10,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1670, PETRI_PLACES=118, PETRI_TRANSITIONS=173} [2024-10-11 19:58:10,124 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2024-10-11 19:58:10,124 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 173 transitions, 1670 flow [2024-10-11 19:58:10,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2024-10-11 19:58:10,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:10,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:10,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 19:58:10,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 19:58:10,325 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:58:10,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1479272097, now seen corresponding path program 2 times [2024-10-11 19:58:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:10,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628462864] [2024-10-11 19:58:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:10,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:10,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628462864] [2024-10-11 19:58:10,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628462864] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:10,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959462979] [2024-10-11 19:58:10,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:58:10,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:10,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:58:10,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:58:10,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:58:10,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:10,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:58:10,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:10,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:58:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959462979] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:10,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:10,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 19:58:10,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788457584] [2024-10-11 19:58:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:10,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:10,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:58:10,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-11 19:58:10,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 173 transitions, 1670 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-10-11 19:58:10,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:10,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-11 19:58:10,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand