./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:31:03,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:31:03,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:31:03,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:31:03,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:31:03,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:31:03,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:31:03,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:31:03,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:31:03,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:31:03,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:31:03,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:31:03,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:31:03,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:31:03,433 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:31:03,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:31:03,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:31:03,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:31:03,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:31:03,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:31:03,435 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:31:03,438 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:31:03,438 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:31:03,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:31:03,439 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:31:03,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:31:03,439 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:31:03,439 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:31:03,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:31:03,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:31:03,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:31:03,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:31:03,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:31:03,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:31:03,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:31:03,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:31:03,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:31:03,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:31:03,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:31:03,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:31:03,443 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:31:03,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:31:03,444 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-12 16:31:03,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:31:03,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:31:03,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:31:03,718 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:31:03,718 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:31:03,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-12 16:31:05,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:31:05,358 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:31:05,358 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-12 16:31:05,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c00ca717c/4eb5b299111640f58029ad2a0c53a9e8/FLAGebd1fc59a [2024-11-12 16:31:05,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c00ca717c/4eb5b299111640f58029ad2a0c53a9e8 [2024-11-12 16:31:05,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:31:05,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:31:05,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:31:05,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:31:05,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:31:05,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f59e250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05, skipping insertion in model container [2024-11-12 16:31:05,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,409 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:31:05,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:31:05,643 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:31:05,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:31:05,714 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:31:05,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05 WrapperNode [2024-11-12 16:31:05,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:31:05,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:31:05,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:31:05,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:31:05,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,783 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-11-12 16:31:05,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:31:05,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:31:05,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:31:05,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:31:05,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,809 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 16:31:05,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:31:05,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:31:05,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:31:05,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:31:05,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (1/1) ... [2024-11-12 16:31:05,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:31:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:05,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 16:31:05,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 16:31:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:31:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:31:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:31:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:31:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:31:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:31:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 16:31:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 16:31:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:31:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:31:05,920 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:31:06,008 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:31:06,010 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:31:06,152 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:31:06,153 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:31:06,279 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:31:06,279 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 16:31:06,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:31:06 BoogieIcfgContainer [2024-11-12 16:31:06,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:31:06,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:31:06,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:31:06,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:31:06,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:31:05" (1/3) ... [2024-11-12 16:31:06,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f618f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:31:06, skipping insertion in model container [2024-11-12 16:31:06,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:31:05" (2/3) ... [2024-11-12 16:31:06,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f618f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:31:06, skipping insertion in model container [2024-11-12 16:31:06,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:31:06" (3/3) ... [2024-11-12 16:31:06,291 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-12 16:31:06,307 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:31:06,308 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:31:06,308 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:31:06,344 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 16:31:06,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-12 16:31:06,397 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-12 16:31:06,398 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:31:06,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-12 16:31:06,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-12 16:31:06,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-12 16:31:06,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:31:06,423 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;@33f589db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:31:06,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 16:31:06,431 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:31:06,431 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-12 16:31:06,431 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:31:06,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:06,432 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:06,432 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:06,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1974399478, now seen corresponding path program 1 times [2024-11-12 16:31:06,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:06,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150468969] [2024-11-12 16:31:06,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150468969] [2024-11-12 16:31:06,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150468969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:06,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:06,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:31:06,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99232329] [2024-11-12 16:31:06,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:06,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:31:06,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:06,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:31:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:31:06,833 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-12 16:31:06,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:06,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:06,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-12 16:31:06,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:06,932 INFO L124 PetriNetUnfolderBase]: 61/123 cut-off events. [2024-11-12 16:31:06,933 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-12 16:31:06,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 123 events. 61/123 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 370 event pairs, 31 based on Foata normal form. 10/128 useless extension candidates. Maximal degree in co-relation 213. Up to 86 conditions per place. [2024-11-12 16:31:06,939 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-11-12 16:31:06,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 109 flow [2024-11-12 16:31:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:31:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:31:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-11-12 16:31:06,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-12 16:31:06,950 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 48 transitions. [2024-11-12 16:31:06,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 109 flow [2024-11-12 16:31:06,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 16:31:06,956 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-11-12 16:31:06,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-12 16:31:06,962 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-11-12 16:31:06,963 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-11-12 16:31:06,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:06,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:06,963 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:06,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:31:06,965 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:06,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1080039208, now seen corresponding path program 1 times [2024-11-12 16:31:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608209339] [2024-11-12 16:31:06,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:31:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:07,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608209339] [2024-11-12 16:31:07,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608209339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:31:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558784968] [2024-11-12 16:31:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:07,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:31:07,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:31:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:31:07,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-12 16:31:07,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:07,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:07,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-12 16:31:07,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:07,196 INFO L124 PetriNetUnfolderBase]: 89/174 cut-off events. [2024-11-12 16:31:07,196 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-12 16:31:07,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 174 events. 89/174 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 589 event pairs, 42 based on Foata normal form. 10/177 useless extension candidates. Maximal degree in co-relation 103. Up to 108 conditions per place. [2024-11-12 16:31:07,201 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-12 16:31:07,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 133 flow [2024-11-12 16:31:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:31:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:31:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-11-12 16:31:07,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-12 16:31:07,204 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 48 transitions. [2024-11-12 16:31:07,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 133 flow [2024-11-12 16:31:07,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:31:07,206 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-12 16:31:07,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-11-12 16:31:07,207 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-12 16:31:07,207 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-12 16:31:07,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:07,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:07,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:07,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:31:07,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:07,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:07,209 INFO L85 PathProgramCache]: Analyzing trace with hash 978789089, now seen corresponding path program 1 times [2024-11-12 16:31:07,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:07,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412106465] [2024-11-12 16:31:07,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412106465] [2024-11-12 16:31:07,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412106465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:07,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020531185] [2024-11-12 16:31:07,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:07,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:07,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:07,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:07,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:31:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:07,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 16:31:07,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:08,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020531185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:08,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:08,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-12 16:31:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159205756] [2024-11-12 16:31:08,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:08,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 16:31:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:08,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 16:31:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2024-11-12 16:31:08,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:08,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:08,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:08,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:08,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:10,265 INFO L124 PetriNetUnfolderBase]: 565/989 cut-off events. [2024-11-12 16:31:10,266 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-11-12 16:31:10,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 989 events. 565/989 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4577 event pairs, 13 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 881. Up to 211 conditions per place. [2024-11-12 16:31:10,277 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 123 selfloop transitions, 111 changer transitions 13/248 dead transitions. [2024-11-12 16:31:10,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 248 transitions, 1234 flow [2024-11-12 16:31:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-12 16:31:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-12 16:31:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 389 transitions. [2024-11-12 16:31:10,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4336677814938685 [2024-11-12 16:31:10,284 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 39 states and 389 transitions. [2024-11-12 16:31:10,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 248 transitions, 1234 flow [2024-11-12 16:31:10,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 248 transitions, 1220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:31:10,294 INFO L231 Difference]: Finished difference. Result has 78 places, 149 transitions, 912 flow [2024-11-12 16:31:10,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=912, PETRI_PLACES=78, PETRI_TRANSITIONS=149} [2024-11-12 16:31:10,295 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2024-11-12 16:31:10,296 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 149 transitions, 912 flow [2024-11-12 16:31:10,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:10,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:10,296 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:10,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:31:10,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:10,501 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:10,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1609550437, now seen corresponding path program 2 times [2024-11-12 16:31:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526004878] [2024-11-12 16:31:10,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:10,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526004878] [2024-11-12 16:31:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526004878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614383841] [2024-11-12 16:31:10,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:31:10,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:10,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:10,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:10,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:31:10,810 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:31:10,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:10,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 16:31:10,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:11,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614383841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:11,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:11,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-12 16:31:11,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712772457] [2024-11-12 16:31:11,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:11,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 16:31:11,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 16:31:11,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-12 16:31:11,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:11,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 149 transitions, 912 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:11,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:11,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:11,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:12,520 INFO L124 PetriNetUnfolderBase]: 643/1184 cut-off events. [2024-11-12 16:31:12,520 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-11-12 16:31:12,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 1184 events. 643/1184 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5763 event pairs, 31 based on Foata normal form. 3/1187 useless extension candidates. Maximal degree in co-relation 4630. Up to 359 conditions per place. [2024-11-12 16:31:12,530 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 130 selfloop transitions, 115 changer transitions 26/272 dead transitions. [2024-11-12 16:31:12,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 272 transitions, 2184 flow [2024-11-12 16:31:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 16:31:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 16:31:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2024-11-12 16:31:12,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4428341384863124 [2024-11-12 16:31:12,533 INFO L175 Difference]: Start difference. First operand has 78 places, 149 transitions, 912 flow. Second operand 27 states and 275 transitions. [2024-11-12 16:31:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 272 transitions, 2184 flow [2024-11-12 16:31:12,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 272 transitions, 2088 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-12 16:31:12,570 INFO L231 Difference]: Finished difference. Result has 109 places, 178 transitions, 1390 flow [2024-11-12 16:31:12,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1390, PETRI_PLACES=109, PETRI_TRANSITIONS=178} [2024-11-12 16:31:12,573 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 84 predicate places. [2024-11-12 16:31:12,574 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 178 transitions, 1390 flow [2024-11-12 16:31:12,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:12,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:12,574 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:12,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:12,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-12 16:31:12,777 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:12,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1294723099, now seen corresponding path program 3 times [2024-11-12 16:31:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387023593] [2024-11-12 16:31:12,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:13,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387023593] [2024-11-12 16:31:13,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387023593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:13,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68769000] [2024-11-12 16:31:13,009 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:31:13,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:13,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:13,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:13,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:31:13,062 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:31:13,063 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:13,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 16:31:13,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:13,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68769000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:13,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:13,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-12 16:31:13,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715434705] [2024-11-12 16:31:13,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:13,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 16:31:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 16:31:13,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-12 16:31:13,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:13,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 178 transitions, 1390 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:13,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:13,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:13,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:14,919 INFO L124 PetriNetUnfolderBase]: 622/1141 cut-off events. [2024-11-12 16:31:14,920 INFO L125 PetriNetUnfolderBase]: For 4871/4871 co-relation queries the response was YES. [2024-11-12 16:31:14,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 1141 events. 622/1141 cut-off events. For 4871/4871 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5466 event pairs, 28 based on Foata normal form. 1/1142 useless extension candidates. Maximal degree in co-relation 5215. Up to 360 conditions per place. [2024-11-12 16:31:14,931 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 122 selfloop transitions, 124 changer transitions 15/262 dead transitions. [2024-11-12 16:31:14,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 262 transitions, 2458 flow [2024-11-12 16:31:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 16:31:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 16:31:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 297 transitions. [2024-11-12 16:31:14,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43043478260869567 [2024-11-12 16:31:14,934 INFO L175 Difference]: Start difference. First operand has 109 places, 178 transitions, 1390 flow. Second operand 30 states and 297 transitions. [2024-11-12 16:31:14,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 262 transitions, 2458 flow [2024-11-12 16:31:14,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 262 transitions, 2333 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-11-12 16:31:14,967 INFO L231 Difference]: Finished difference. Result has 130 places, 181 transitions, 1655 flow [2024-11-12 16:31:14,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1655, PETRI_PLACES=130, PETRI_TRANSITIONS=181} [2024-11-12 16:31:14,970 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 105 predicate places. [2024-11-12 16:31:14,970 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 181 transitions, 1655 flow [2024-11-12 16:31:14,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:14,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:14,970 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:14,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:15,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:15,171 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:15,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash -441805595, now seen corresponding path program 4 times [2024-11-12 16:31:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65507115] [2024-11-12 16:31:15,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:15,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:15,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65507115] [2024-11-12 16:31:15,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65507115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939256355] [2024-11-12 16:31:15,385 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:31:15,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:15,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:15,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:15,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:31:15,450 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:31:15,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:15,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 16:31:15,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:15,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:15,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939256355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:15,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:15,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-12 16:31:15,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377536051] [2024-11-12 16:31:15,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:15,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 16:31:15,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:15,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 16:31:15,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-11-12 16:31:16,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:16,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 181 transitions, 1655 flow. Second operand has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:16,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:16,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:16,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:17,405 INFO L124 PetriNetUnfolderBase]: 806/1456 cut-off events. [2024-11-12 16:31:17,406 INFO L125 PetriNetUnfolderBase]: For 6627/6627 co-relation queries the response was YES. [2024-11-12 16:31:17,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7383 conditions, 1456 events. 806/1456 cut-off events. For 6627/6627 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7375 event pairs, 27 based on Foata normal form. 3/1459 useless extension candidates. Maximal degree in co-relation 7290. Up to 318 conditions per place. [2024-11-12 16:31:17,418 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 157 selfloop transitions, 204 changer transitions 16/378 dead transitions. [2024-11-12 16:31:17,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 378 transitions, 4032 flow [2024-11-12 16:31:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-12 16:31:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-12 16:31:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 377 transitions. [2024-11-12 16:31:17,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44300822561692127 [2024-11-12 16:31:17,421 INFO L175 Difference]: Start difference. First operand has 130 places, 181 transitions, 1655 flow. Second operand 37 states and 377 transitions. [2024-11-12 16:31:17,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 378 transitions, 4032 flow [2024-11-12 16:31:17,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 378 transitions, 3711 flow, removed 44 selfloop flow, removed 21 redundant places. [2024-11-12 16:31:17,464 INFO L231 Difference]: Finished difference. Result has 155 places, 273 transitions, 2986 flow [2024-11-12 16:31:17,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2986, PETRI_PLACES=155, PETRI_TRANSITIONS=273} [2024-11-12 16:31:17,465 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 130 predicate places. [2024-11-12 16:31:17,465 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 273 transitions, 2986 flow [2024-11-12 16:31:17,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:17,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:17,466 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:17,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 16:31:17,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:17,666 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:17,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1126948333, now seen corresponding path program 5 times [2024-11-12 16:31:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672952328] [2024-11-12 16:31:17,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:17,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:17,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672952328] [2024-11-12 16:31:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672952328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799274762] [2024-11-12 16:31:17,759 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:31:17,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:17,761 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:17,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 16:31:17,813 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:31:17,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:17,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:31:17,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:17,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:17,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799274762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:17,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:17,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-12 16:31:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512529845] [2024-11-12 16:31:17,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:17,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 16:31:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 16:31:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-12 16:31:17,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-12 16:31:17,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 273 transitions, 2986 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:17,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:17,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-12 16:31:17,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:18,109 INFO L124 PetriNetUnfolderBase]: 722/1320 cut-off events. [2024-11-12 16:31:18,110 INFO L125 PetriNetUnfolderBase]: For 8934/8944 co-relation queries the response was YES. [2024-11-12 16:31:18,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 1320 events. 722/1320 cut-off events. For 8934/8944 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6575 event pairs, 26 based on Foata normal form. 27/1344 useless extension candidates. Maximal degree in co-relation 7442. Up to 663 conditions per place. [2024-11-12 16:31:18,128 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 163 selfloop transitions, 106 changer transitions 1/303 dead transitions. [2024-11-12 16:31:18,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 303 transitions, 3776 flow [2024-11-12 16:31:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:31:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:31:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-12 16:31:18,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-11-12 16:31:18,129 INFO L175 Difference]: Start difference. First operand has 155 places, 273 transitions, 2986 flow. Second operand 5 states and 59 transitions. [2024-11-12 16:31:18,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 303 transitions, 3776 flow [2024-11-12 16:31:18,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 303 transitions, 3492 flow, removed 83 selfloop flow, removed 12 redundant places. [2024-11-12 16:31:18,201 INFO L231 Difference]: Finished difference. Result has 143 places, 277 transitions, 3195 flow [2024-11-12 16:31:18,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3195, PETRI_PLACES=143, PETRI_TRANSITIONS=277} [2024-11-12 16:31:18,204 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 118 predicate places. [2024-11-12 16:31:18,204 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 277 transitions, 3195 flow [2024-11-12 16:31:18,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:18,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:18,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:18,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 16:31:18,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:18,406 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:18,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1781100175, now seen corresponding path program 6 times [2024-11-12 16:31:18,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:18,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021081212] [2024-11-12 16:31:18,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:18,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:18,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021081212] [2024-11-12 16:31:18,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021081212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:18,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:18,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:31:18,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797490848] [2024-11-12 16:31:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:18,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:31:18,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:31:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:31:18,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-12 16:31:18,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 277 transitions, 3195 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-11-12 16:31:18,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:18,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-12 16:31:18,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:18,981 INFO L124 PetriNetUnfolderBase]: 796/1469 cut-off events. [2024-11-12 16:31:18,982 INFO L125 PetriNetUnfolderBase]: For 10198/10204 co-relation queries the response was YES. [2024-11-12 16:31:18,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 1469 events. 796/1469 cut-off events. For 10198/10204 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7686 event pairs, 40 based on Foata normal form. 7/1454 useless extension candidates. Maximal degree in co-relation 8566. Up to 1127 conditions per place. [2024-11-12 16:31:18,998 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 245 selfloop transitions, 27 changer transitions 14/334 dead transitions. [2024-11-12 16:31:18,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 334 transitions, 4333 flow [2024-11-12 16:31:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:31:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:31:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-11-12 16:31:19,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-12 16:31:19,000 INFO L175 Difference]: Start difference. First operand has 143 places, 277 transitions, 3195 flow. Second operand 10 states and 110 transitions. [2024-11-12 16:31:19,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 334 transitions, 4333 flow [2024-11-12 16:31:19,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 334 transitions, 4325 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-12 16:31:19,055 INFO L231 Difference]: Finished difference. Result has 160 places, 297 transitions, 3574 flow [2024-11-12 16:31:19,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3574, PETRI_PLACES=160, PETRI_TRANSITIONS=297} [2024-11-12 16:31:19,057 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 135 predicate places. [2024-11-12 16:31:19,057 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 297 transitions, 3574 flow [2024-11-12 16:31:19,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-11-12 16:31:19,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:19,058 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:19,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:31:19,058 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:19,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash -4479771, now seen corresponding path program 7 times [2024-11-12 16:31:19,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:19,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469791679] [2024-11-12 16:31:19,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:19,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469791679] [2024-11-12 16:31:19,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469791679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:19,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:31:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715372138] [2024-11-12 16:31:19,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:19,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:31:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:19,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:31:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:31:19,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-12 16:31:19,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 297 transitions, 3574 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:19,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:19,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-12 16:31:19,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:19,632 INFO L124 PetriNetUnfolderBase]: 746/1428 cut-off events. [2024-11-12 16:31:19,632 INFO L125 PetriNetUnfolderBase]: For 10509/10533 co-relation queries the response was YES. [2024-11-12 16:31:19,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8764 conditions, 1428 events. 746/1428 cut-off events. For 10509/10533 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7782 event pairs, 24 based on Foata normal form. 18/1436 useless extension candidates. Maximal degree in co-relation 8657. Up to 963 conditions per place. [2024-11-12 16:31:19,651 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 215 selfloop transitions, 42 changer transitions 8/345 dead transitions. [2024-11-12 16:31:19,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 345 transitions, 4445 flow [2024-11-12 16:31:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 16:31:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 16:31:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 166 transitions. [2024-11-12 16:31:19,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4811594202898551 [2024-11-12 16:31:19,654 INFO L175 Difference]: Start difference. First operand has 160 places, 297 transitions, 3574 flow. Second operand 15 states and 166 transitions. [2024-11-12 16:31:19,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 345 transitions, 4445 flow [2024-11-12 16:31:19,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 345 transitions, 4407 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-12 16:31:19,711 INFO L231 Difference]: Finished difference. Result has 172 places, 312 transitions, 3902 flow [2024-11-12 16:31:19,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3547, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3902, PETRI_PLACES=172, PETRI_TRANSITIONS=312} [2024-11-12 16:31:19,712 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 147 predicate places. [2024-11-12 16:31:19,712 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 312 transitions, 3902 flow [2024-11-12 16:31:19,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:19,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:19,713 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:19,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 16:31:19,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:19,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash -435698499, now seen corresponding path program 8 times [2024-11-12 16:31:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289245956] [2024-11-12 16:31:19,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289245956] [2024-11-12 16:31:19,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289245956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628461329] [2024-11-12 16:31:19,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:31:19,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:19,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:19,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 16:31:19,964 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:31:19,965 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:19,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 16:31:19,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:20,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628461329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:20,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-12 16:31:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602157243] [2024-11-12 16:31:20,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:20,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 16:31:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 16:31:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-12 16:31:20,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:20,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 312 transitions, 3902 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:20,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:20,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:20,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:21,473 INFO L124 PetriNetUnfolderBase]: 1150/2045 cut-off events. [2024-11-12 16:31:21,474 INFO L125 PetriNetUnfolderBase]: For 15597/15597 co-relation queries the response was YES. [2024-11-12 16:31:21,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12822 conditions, 2045 events. 1150/2045 cut-off events. For 15597/15597 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11114 event pairs, 33 based on Foata normal form. 3/2048 useless extension candidates. Maximal degree in co-relation 12697. Up to 860 conditions per place. [2024-11-12 16:31:21,493 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 211 selfloop transitions, 277 changer transitions 12/501 dead transitions. [2024-11-12 16:31:21,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 501 transitions, 6978 flow [2024-11-12 16:31:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 16:31:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 16:31:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 244 transitions. [2024-11-12 16:31:21,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.392914653784219 [2024-11-12 16:31:21,495 INFO L175 Difference]: Start difference. First operand has 172 places, 312 transitions, 3902 flow. Second operand 27 states and 244 transitions. [2024-11-12 16:31:21,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 501 transitions, 6978 flow [2024-11-12 16:31:21,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 501 transitions, 6819 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-11-12 16:31:21,578 INFO L231 Difference]: Finished difference. Result has 204 places, 427 transitions, 6380 flow [2024-11-12 16:31:21,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3788, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6380, PETRI_PLACES=204, PETRI_TRANSITIONS=427} [2024-11-12 16:31:21,579 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 179 predicate places. [2024-11-12 16:31:21,579 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 427 transitions, 6380 flow [2024-11-12 16:31:21,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:21,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:21,579 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:21,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:21,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:21,780 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:21,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -301608987, now seen corresponding path program 9 times [2024-11-12 16:31:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563630242] [2024-11-12 16:31:21,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563630242] [2024-11-12 16:31:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563630242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356629523] [2024-11-12 16:31:22,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:31:22,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:22,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:22,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 16:31:22,040 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:31:22,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:22,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 16:31:22,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:22,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356629523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:22,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:22,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-12 16:31:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331797422] [2024-11-12 16:31:22,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:22,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 16:31:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 16:31:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-12 16:31:22,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:22,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 427 transitions, 6380 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:22,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:22,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:22,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:23,404 INFO L124 PetriNetUnfolderBase]: 1169/2076 cut-off events. [2024-11-12 16:31:23,404 INFO L125 PetriNetUnfolderBase]: For 21394/21394 co-relation queries the response was YES. [2024-11-12 16:31:23,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14911 conditions, 2076 events. 1169/2076 cut-off events. For 21394/21394 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11261 event pairs, 23 based on Foata normal form. 2/2078 useless extension candidates. Maximal degree in co-relation 14782. Up to 969 conditions per place. [2024-11-12 16:31:23,417 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 231 selfloop transitions, 264 changer transitions 23/519 dead transitions. [2024-11-12 16:31:23,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 519 transitions, 8541 flow [2024-11-12 16:31:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 16:31:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 16:31:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 191 transitions. [2024-11-12 16:31:23,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43707093821510296 [2024-11-12 16:31:23,420 INFO L175 Difference]: Start difference. First operand has 204 places, 427 transitions, 6380 flow. Second operand 19 states and 191 transitions. [2024-11-12 16:31:23,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 519 transitions, 8541 flow [2024-11-12 16:31:23,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 519 transitions, 8333 flow, removed 97 selfloop flow, removed 3 redundant places. [2024-11-12 16:31:23,538 INFO L231 Difference]: Finished difference. Result has 228 places, 450 transitions, 7513 flow [2024-11-12 16:31:23,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7513, PETRI_PLACES=228, PETRI_TRANSITIONS=450} [2024-11-12 16:31:23,539 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 203 predicate places. [2024-11-12 16:31:23,539 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 450 transitions, 7513 flow [2024-11-12 16:31:23,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:23,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:23,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:23,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:23,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:23,740 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:23,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash 551308517, now seen corresponding path program 10 times [2024-11-12 16:31:23,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:23,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141319917] [2024-11-12 16:31:23,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:23,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:23,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:23,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141319917] [2024-11-12 16:31:23,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141319917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:23,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319993440] [2024-11-12 16:31:23,921 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:31:23,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:23,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:23,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:23,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 16:31:23,970 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:31:23,970 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:23,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 16:31:23,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:24,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319993440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:24,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:24,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-12 16:31:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058831490] [2024-11-12 16:31:24,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:24,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 16:31:24,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 16:31:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-12 16:31:24,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:24,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 450 transitions, 7513 flow. Second operand has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:24,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:24,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:24,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:26,127 INFO L124 PetriNetUnfolderBase]: 1236/2194 cut-off events. [2024-11-12 16:31:26,127 INFO L125 PetriNetUnfolderBase]: For 28213/28213 co-relation queries the response was YES. [2024-11-12 16:31:26,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17149 conditions, 2194 events. 1236/2194 cut-off events. For 28213/28213 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12084 event pairs, 14 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 16994. Up to 839 conditions per place. [2024-11-12 16:31:26,149 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 222 selfloop transitions, 383 changer transitions 14/620 dead transitions. [2024-11-12 16:31:26,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 620 transitions, 10991 flow [2024-11-12 16:31:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-12 16:31:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-12 16:31:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 315 transitions. [2024-11-12 16:31:26,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-11-12 16:31:26,152 INFO L175 Difference]: Start difference. First operand has 228 places, 450 transitions, 7513 flow. Second operand 35 states and 315 transitions. [2024-11-12 16:31:26,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 620 transitions, 10991 flow [2024-11-12 16:31:26,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 620 transitions, 10712 flow, removed 72 selfloop flow, removed 11 redundant places. [2024-11-12 16:31:26,382 INFO L231 Difference]: Finished difference. Result has 258 places, 545 transitions, 10373 flow [2024-11-12 16:31:26,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=7314, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10373, PETRI_PLACES=258, PETRI_TRANSITIONS=545} [2024-11-12 16:31:26,383 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 233 predicate places. [2024-11-12 16:31:26,383 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 545 transitions, 10373 flow [2024-11-12 16:31:26,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:26,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:26,383 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:26,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:26,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-12 16:31:26,584 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:26,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2040775869, now seen corresponding path program 11 times [2024-11-12 16:31:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:26,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193368832] [2024-11-12 16:31:26,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:26,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193368832] [2024-11-12 16:31:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193368832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:26,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:31:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:31:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935678339] [2024-11-12 16:31:26,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:26,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:31:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:26,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:31:26,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:31:26,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-12 16:31:26,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 545 transitions, 10373 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:26,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:26,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-12 16:31:26,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:27,254 INFO L124 PetriNetUnfolderBase]: 1096/2057 cut-off events. [2024-11-12 16:31:27,254 INFO L125 PetriNetUnfolderBase]: For 32353/32354 co-relation queries the response was YES. [2024-11-12 16:31:27,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18065 conditions, 2057 events. 1096/2057 cut-off events. For 32353/32354 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12056 event pairs, 24 based on Foata normal form. 1/2045 useless extension candidates. Maximal degree in co-relation 17917. Up to 1470 conditions per place. [2024-11-12 16:31:27,279 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 391 selfloop transitions, 28 changer transitions 4/574 dead transitions. [2024-11-12 16:31:27,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 574 transitions, 11605 flow [2024-11-12 16:31:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:31:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:31:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-12 16:31:27,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4608695652173913 [2024-11-12 16:31:27,280 INFO L175 Difference]: Start difference. First operand has 258 places, 545 transitions, 10373 flow. Second operand 10 states and 106 transitions. [2024-11-12 16:31:27,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 574 transitions, 11605 flow [2024-11-12 16:31:27,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 574 transitions, 11181 flow, removed 172 selfloop flow, removed 13 redundant places. [2024-11-12 16:31:27,599 INFO L231 Difference]: Finished difference. Result has 257 places, 559 transitions, 10372 flow [2024-11-12 16:31:27,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=10005, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10372, PETRI_PLACES=257, PETRI_TRANSITIONS=559} [2024-11-12 16:31:27,600 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 232 predicate places. [2024-11-12 16:31:27,600 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 559 transitions, 10372 flow [2024-11-12 16:31:27,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:27,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:27,600 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:27,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 16:31:27,600 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:27,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1953322207, now seen corresponding path program 12 times [2024-11-12 16:31:27,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:27,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308016166] [2024-11-12 16:31:27,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:27,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308016166] [2024-11-12 16:31:27,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308016166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:27,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583843792] [2024-11-12 16:31:27,803 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:31:27,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:27,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:27,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:27,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 16:31:27,848 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-12 16:31:27,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:27,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 16:31:27,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:28,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:28,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583843792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:28,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:28,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 26 [2024-11-12 16:31:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953733261] [2024-11-12 16:31:28,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:28,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 16:31:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 16:31:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-12 16:31:28,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:28,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 559 transitions, 10372 flow. Second operand has 27 states, 27 states have (on average 5.962962962962963) internal successors, (161), 27 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:28,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:28,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:28,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:29,918 INFO L124 PetriNetUnfolderBase]: 1314/2324 cut-off events. [2024-11-12 16:31:29,918 INFO L125 PetriNetUnfolderBase]: For 29951/29951 co-relation queries the response was YES. [2024-11-12 16:31:29,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19622 conditions, 2324 events. 1314/2324 cut-off events. For 29951/29951 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 12877 event pairs, 19 based on Foata normal form. 5/2329 useless extension candidates. Maximal degree in co-relation 19484. Up to 1019 conditions per place. [2024-11-12 16:31:29,987 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 234 selfloop transitions, 421 changer transitions 7/663 dead transitions. [2024-11-12 16:31:29,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 663 transitions, 12877 flow [2024-11-12 16:31:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-12 16:31:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-12 16:31:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 306 transitions. [2024-11-12 16:31:29,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3801242236024845 [2024-11-12 16:31:29,989 INFO L175 Difference]: Start difference. First operand has 257 places, 559 transitions, 10372 flow. Second operand 35 states and 306 transitions. [2024-11-12 16:31:29,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 663 transitions, 12877 flow [2024-11-12 16:31:30,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 663 transitions, 12845 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-12 16:31:30,236 INFO L231 Difference]: Finished difference. Result has 295 places, 601 transitions, 12356 flow [2024-11-12 16:31:30,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=10291, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12356, PETRI_PLACES=295, PETRI_TRANSITIONS=601} [2024-11-12 16:31:30,237 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 270 predicate places. [2024-11-12 16:31:30,237 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 601 transitions, 12356 flow [2024-11-12 16:31:30,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.962962962962963) internal successors, (161), 27 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:30,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:30,238 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:30,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 16:31:30,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 16:31:30,439 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:30,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1289065913, now seen corresponding path program 13 times [2024-11-12 16:31:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675787965] [2024-11-12 16:31:30,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675787965] [2024-11-12 16:31:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675787965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955188100] [2024-11-12 16:31:30,646 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:31:30,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:30,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:30,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:30,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 16:31:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:30,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 16:31:30,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:30,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 16:31:30,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955188100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:30,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 16:31:30,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-12 16:31:30,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108145758] [2024-11-12 16:31:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:30,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:31:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:31:30,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:31:30,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:30,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 601 transitions, 12356 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:30,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:30,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:30,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:31,591 INFO L124 PetriNetUnfolderBase]: 1310/2305 cut-off events. [2024-11-12 16:31:31,592 INFO L125 PetriNetUnfolderBase]: For 36388/36388 co-relation queries the response was YES. [2024-11-12 16:31:31,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21189 conditions, 2305 events. 1310/2305 cut-off events. For 36388/36388 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12668 event pairs, 67 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 21040. Up to 1843 conditions per place. [2024-11-12 16:31:31,612 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 534 selfloop transitions, 66 changer transitions 15/616 dead transitions. [2024-11-12 16:31:31,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 616 transitions, 13658 flow [2024-11-12 16:31:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:31:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:31:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-11-12 16:31:31,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2024-11-12 16:31:31,614 INFO L175 Difference]: Start difference. First operand has 295 places, 601 transitions, 12356 flow. Second operand 10 states and 102 transitions. [2024-11-12 16:31:31,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 616 transitions, 13658 flow [2024-11-12 16:31:31,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 616 transitions, 13347 flow, removed 90 selfloop flow, removed 18 redundant places. [2024-11-12 16:31:31,876 INFO L231 Difference]: Finished difference. Result has 283 places, 592 transitions, 12043 flow [2024-11-12 16:31:31,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12036, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12043, PETRI_PLACES=283, PETRI_TRANSITIONS=592} [2024-11-12 16:31:31,877 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 258 predicate places. [2024-11-12 16:31:31,877 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 592 transitions, 12043 flow [2024-11-12 16:31:31,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:31,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:31,877 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:31,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:32,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 16:31:32,078 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:32,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1561634551, now seen corresponding path program 14 times [2024-11-12 16:31:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675363629] [2024-11-12 16:31:32,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:32,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:32,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:32,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:32,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675363629] [2024-11-12 16:31:32,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675363629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:32,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400512942] [2024-11-12 16:31:32,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:31:32,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:32,276 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:32,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 16:31:32,317 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:31:32,317 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:32,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 16:31:32,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:31:32,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 16:31:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400512942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:31:32,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 16:31:32,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-12 16:31:32,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543826718] [2024-11-12 16:31:32,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:31:32,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:31:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:31:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:31:32,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:32,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 592 transitions, 12043 flow. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:32,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:32,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:33,099 INFO L124 PetriNetUnfolderBase]: 1295/2273 cut-off events. [2024-11-12 16:31:33,100 INFO L125 PetriNetUnfolderBase]: For 34214/34214 co-relation queries the response was YES. [2024-11-12 16:31:33,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20798 conditions, 2273 events. 1295/2273 cut-off events. For 34214/34214 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12363 event pairs, 59 based on Foata normal form. 1/2274 useless extension candidates. Maximal degree in co-relation 20628. Up to 1932 conditions per place. [2024-11-12 16:31:33,126 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 555 selfloop transitions, 54 changer transitions 4/614 dead transitions. [2024-11-12 16:31:33,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 614 transitions, 13563 flow [2024-11-12 16:31:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:31:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:31:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-12 16:31:33,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41739130434782606 [2024-11-12 16:31:33,127 INFO L175 Difference]: Start difference. First operand has 283 places, 592 transitions, 12043 flow. Second operand 10 states and 96 transitions. [2024-11-12 16:31:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 614 transitions, 13563 flow [2024-11-12 16:31:33,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 614 transitions, 13401 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-11-12 16:31:33,401 INFO L231 Difference]: Finished difference. Result has 281 places, 593 transitions, 12035 flow [2024-11-12 16:31:33,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11887, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12035, PETRI_PLACES=281, PETRI_TRANSITIONS=593} [2024-11-12 16:31:33,402 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 256 predicate places. [2024-11-12 16:31:33,402 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 593 transitions, 12035 flow [2024-11-12 16:31:33,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:33,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:33,402 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:33,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 16:31:33,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 16:31:33,603 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:33,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1842304834, now seen corresponding path program 15 times [2024-11-12 16:31:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401198129] [2024-11-12 16:31:33,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:33,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401198129] [2024-11-12 16:31:33,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401198129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981276458] [2024-11-12 16:31:33,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:31:33,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:33,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:33,815 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:33,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 16:31:33,864 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:31:33,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:33,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 16:31:33,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:34,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:34,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981276458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:34,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:34,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-12 16:31:34,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107034511] [2024-11-12 16:31:34,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:34,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 16:31:34,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:34,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 16:31:34,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 16:31:34,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:34,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 593 transitions, 12035 flow. Second operand has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:34,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:34,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:34,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:37,377 INFO L124 PetriNetUnfolderBase]: 1785/3200 cut-off events. [2024-11-12 16:31:37,377 INFO L125 PetriNetUnfolderBase]: For 51719/51719 co-relation queries the response was YES. [2024-11-12 16:31:37,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29388 conditions, 3200 events. 1785/3200 cut-off events. For 51719/51719 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18753 event pairs, 68 based on Foata normal form. 5/3205 useless extension candidates. Maximal degree in co-relation 29219. Up to 787 conditions per place. [2024-11-12 16:31:37,410 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 380 selfloop transitions, 548 changer transitions 27/956 dead transitions. [2024-11-12 16:31:37,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 956 transitions, 19580 flow [2024-11-12 16:31:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-12 16:31:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-12 16:31:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 599 transitions. [2024-11-12 16:31:37,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41338854382332646 [2024-11-12 16:31:37,414 INFO L175 Difference]: Start difference. First operand has 281 places, 593 transitions, 12035 flow. Second operand 63 states and 599 transitions. [2024-11-12 16:31:37,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 956 transitions, 19580 flow [2024-11-12 16:31:37,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 956 transitions, 19254 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-12 16:31:37,786 INFO L231 Difference]: Finished difference. Result has 355 places, 771 transitions, 17637 flow [2024-11-12 16:31:37,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11832, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=17637, PETRI_PLACES=355, PETRI_TRANSITIONS=771} [2024-11-12 16:31:37,787 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 330 predicate places. [2024-11-12 16:31:37,787 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 771 transitions, 17637 flow [2024-11-12 16:31:37,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:37,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:37,787 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:37,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:37,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 16:31:37,991 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:37,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:37,992 INFO L85 PathProgramCache]: Analyzing trace with hash 127477776, now seen corresponding path program 16 times [2024-11-12 16:31:37,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:37,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924217703] [2024-11-12 16:31:37,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:38,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924217703] [2024-11-12 16:31:38,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924217703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557851674] [2024-11-12 16:31:38,203 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:31:38,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:38,205 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:38,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 16:31:38,256 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:31:38,256 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:38,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 16:31:38,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:38,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:38,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557851674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:38,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2024-11-12 16:31:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743895908] [2024-11-12 16:31:38,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:38,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 16:31:38,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 16:31:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 16:31:38,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:38,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 771 transitions, 17637 flow. Second operand has 35 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 35 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:38,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:38,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:38,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:42,705 INFO L124 PetriNetUnfolderBase]: 2048/3683 cut-off events. [2024-11-12 16:31:42,705 INFO L125 PetriNetUnfolderBase]: For 74700/74700 co-relation queries the response was YES. [2024-11-12 16:31:42,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37361 conditions, 3683 events. 2048/3683 cut-off events. For 74700/74700 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22425 event pairs, 38 based on Foata normal form. 5/3688 useless extension candidates. Maximal degree in co-relation 37254. Up to 952 conditions per place. [2024-11-12 16:31:42,742 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 352 selfloop transitions, 748 changer transitions 26/1127 dead transitions. [2024-11-12 16:31:42,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1127 transitions, 25338 flow [2024-11-12 16:31:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-12 16:31:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-11-12 16:31:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 801 transitions. [2024-11-12 16:31:42,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3957509881422925 [2024-11-12 16:31:42,745 INFO L175 Difference]: Start difference. First operand has 355 places, 771 transitions, 17637 flow. Second operand 88 states and 801 transitions. [2024-11-12 16:31:42,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1127 transitions, 25338 flow [2024-11-12 16:31:43,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1127 transitions, 24523 flow, removed 112 selfloop flow, removed 13 redundant places. [2024-11-12 16:31:43,407 INFO L231 Difference]: Finished difference. Result has 449 places, 937 transitions, 23263 flow [2024-11-12 16:31:43,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=17061, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=23263, PETRI_PLACES=449, PETRI_TRANSITIONS=937} [2024-11-12 16:31:43,408 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 424 predicate places. [2024-11-12 16:31:43,408 INFO L471 AbstractCegarLoop]: Abstraction has has 449 places, 937 transitions, 23263 flow [2024-11-12 16:31:43,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 35 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:43,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:43,409 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:43,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:43,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 16:31:43,610 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:43,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:43,610 INFO L85 PathProgramCache]: Analyzing trace with hash 841867130, now seen corresponding path program 17 times [2024-11-12 16:31:43,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:43,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862060043] [2024-11-12 16:31:43,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:43,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:43,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:43,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862060043] [2024-11-12 16:31:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862060043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:43,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851424591] [2024-11-12 16:31:43,822 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:31:43,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:43,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:43,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 16:31:43,869 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-12 16:31:43,869 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:43,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 16:31:43,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:44,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851424591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:44,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:44,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-12 16:31:44,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761517754] [2024-11-12 16:31:44,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:44,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 16:31:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:44,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 16:31:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 16:31:44,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:44,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 937 transitions, 23263 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:44,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:44,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:44,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:49,959 INFO L124 PetriNetUnfolderBase]: 2335/4236 cut-off events. [2024-11-12 16:31:49,959 INFO L125 PetriNetUnfolderBase]: For 102030/102030 co-relation queries the response was YES. [2024-11-12 16:31:49,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45745 conditions, 4236 events. 2335/4236 cut-off events. For 102030/102030 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26923 event pairs, 51 based on Foata normal form. 6/4242 useless extension candidates. Maximal degree in co-relation 45519. Up to 1109 conditions per place. [2024-11-12 16:31:50,007 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 419 selfloop transitions, 859 changer transitions 31/1310 dead transitions. [2024-11-12 16:31:50,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1310 transitions, 32036 flow [2024-11-12 16:31:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-12 16:31:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2024-11-12 16:31:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 1003 transitions. [2024-11-12 16:31:50,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3859176606387072 [2024-11-12 16:31:50,010 INFO L175 Difference]: Start difference. First operand has 449 places, 937 transitions, 23263 flow. Second operand 113 states and 1003 transitions. [2024-11-12 16:31:50,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1310 transitions, 32036 flow [2024-11-12 16:31:51,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1310 transitions, 30811 flow, removed 384 selfloop flow, removed 27 redundant places. [2024-11-12 16:31:51,378 INFO L231 Difference]: Finished difference. Result has 550 places, 1081 transitions, 28484 flow [2024-11-12 16:31:51,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=22459, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=731, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=28484, PETRI_PLACES=550, PETRI_TRANSITIONS=1081} [2024-11-12 16:31:51,379 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 525 predicate places. [2024-11-12 16:31:51,379 INFO L471 AbstractCegarLoop]: Abstraction has has 550 places, 1081 transitions, 28484 flow [2024-11-12 16:31:51,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:51,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:51,379 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:51,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:51,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:51,580 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:51,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1703631058, now seen corresponding path program 18 times [2024-11-12 16:31:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239229658] [2024-11-12 16:31:51,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:51,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:51,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239229658] [2024-11-12 16:31:51,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239229658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:51,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320697474] [2024-11-12 16:31:51,834 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:31:51,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:51,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:51,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 16:31:51,889 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:31:51,889 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:51,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 16:31:51,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:52,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:52,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320697474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:52,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:52,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-12 16:31:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302935669] [2024-11-12 16:31:52,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:52,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 16:31:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:52,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 16:31:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 16:31:52,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:31:52,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1081 transitions, 28484 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:52,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:52,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:31:52,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:57,178 INFO L124 PetriNetUnfolderBase]: 2866/5178 cut-off events. [2024-11-12 16:31:57,178 INFO L125 PetriNetUnfolderBase]: For 133837/133837 co-relation queries the response was YES. [2024-11-12 16:31:57,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59099 conditions, 5178 events. 2866/5178 cut-off events. For 133837/133837 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 34310 event pairs, 86 based on Foata normal form. 6/5184 useless extension candidates. Maximal degree in co-relation 58916. Up to 1492 conditions per place. [2024-11-12 16:31:57,244 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 484 selfloop transitions, 1046 changer transitions 25/1556 dead transitions. [2024-11-12 16:31:57,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1556 transitions, 41811 flow [2024-11-12 16:31:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-12 16:31:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-11-12 16:31:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 806 transitions. [2024-11-12 16:31:57,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4027986006996502 [2024-11-12 16:31:57,246 INFO L175 Difference]: Start difference. First operand has 550 places, 1081 transitions, 28484 flow. Second operand 87 states and 806 transitions. [2024-11-12 16:31:57,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1556 transitions, 41811 flow [2024-11-12 16:31:59,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1556 transitions, 40202 flow, removed 399 selfloop flow, removed 57 redundant places. [2024-11-12 16:31:59,459 INFO L231 Difference]: Finished difference. Result has 604 places, 1363 transitions, 38752 flow [2024-11-12 16:31:59,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=27354, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=772, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=38752, PETRI_PLACES=604, PETRI_TRANSITIONS=1363} [2024-11-12 16:31:59,460 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 579 predicate places. [2024-11-12 16:31:59,460 INFO L471 AbstractCegarLoop]: Abstraction has has 604 places, 1363 transitions, 38752 flow [2024-11-12 16:31:59,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:59,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:59,460 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:59,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-12 16:31:59,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:59,661 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:31:59,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1675408528, now seen corresponding path program 19 times [2024-11-12 16:31:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091409838] [2024-11-12 16:31:59,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:31:59,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:59,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091409838] [2024-11-12 16:31:59,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091409838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:59,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323445302] [2024-11-12 16:31:59,857 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:31:59,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:59,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:59,859 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:59,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 16:31:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:59,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 16:31:59,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:32:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:00,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:32:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:00,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323445302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:32:00,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:32:00,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-12 16:32:00,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676976370] [2024-11-12 16:32:00,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:32:00,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 16:32:00,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:32:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 16:32:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 16:32:00,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:32:00,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1363 transitions, 38752 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:32:00,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:32:00,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:32:00,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:32:04,322 INFO L124 PetriNetUnfolderBase]: 3034/5489 cut-off events. [2024-11-12 16:32:04,322 INFO L125 PetriNetUnfolderBase]: For 163816/163816 co-relation queries the response was YES. [2024-11-12 16:32:04,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65897 conditions, 5489 events. 3034/5489 cut-off events. For 163816/163816 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 36998 event pairs, 113 based on Foata normal form. 7/5496 useless extension candidates. Maximal degree in co-relation 65688. Up to 2712 conditions per place. [2024-11-12 16:32:04,454 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 546 selfloop transitions, 987 changer transitions 16/1550 dead transitions. [2024-11-12 16:32:04,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 1550 transitions, 45484 flow [2024-11-12 16:32:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-12 16:32:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-12 16:32:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 364 transitions. [2024-11-12 16:32:04,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2024-11-12 16:32:04,456 INFO L175 Difference]: Start difference. First operand has 604 places, 1363 transitions, 38752 flow. Second operand 39 states and 364 transitions. [2024-11-12 16:32:04,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 1550 transitions, 45484 flow [2024-11-12 16:32:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 1550 transitions, 44801 flow, removed 175 selfloop flow, removed 19 redundant places. [2024-11-12 16:32:06,938 INFO L231 Difference]: Finished difference. Result has 635 places, 1456 transitions, 44339 flow [2024-11-12 16:32:06,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=38099, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=901, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=44339, PETRI_PLACES=635, PETRI_TRANSITIONS=1456} [2024-11-12 16:32:06,940 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 610 predicate places. [2024-11-12 16:32:06,941 INFO L471 AbstractCegarLoop]: Abstraction has has 635 places, 1456 transitions, 44339 flow [2024-11-12 16:32:06,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:32:06,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:32:06,941 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:32:06,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 16:32:07,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:32:07,145 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:32:07,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:32:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 564803600, now seen corresponding path program 20 times [2024-11-12 16:32:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:32:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597113863] [2024-11-12 16:32:07,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:32:07,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:32:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:32:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:07,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:32:07,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597113863] [2024-11-12 16:32:07,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597113863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:32:07,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011607386] [2024-11-12 16:32:07,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:32:07,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:32:07,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:32:07,362 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:32:07,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 16:32:07,402 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:32:07,402 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:32:07,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 16:32:07,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:32:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:07,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:32:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:08,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011607386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:32:08,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:32:08,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-12 16:32:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447320260] [2024-11-12 16:32:08,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:32:08,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 16:32:08,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:32:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 16:32:08,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 16:32:08,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:32:08,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 1456 transitions, 44339 flow. Second operand has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:32:08,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:32:08,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:32:08,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:32:13,473 INFO L124 PetriNetUnfolderBase]: 3424/6184 cut-off events. [2024-11-12 16:32:13,473 INFO L125 PetriNetUnfolderBase]: For 211083/211083 co-relation queries the response was YES. [2024-11-12 16:32:13,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79457 conditions, 6184 events. 3424/6184 cut-off events. For 211083/211083 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 42620 event pairs, 93 based on Foata normal form. 4/6188 useless extension candidates. Maximal degree in co-relation 79238. Up to 2715 conditions per place. [2024-11-12 16:32:13,559 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 663 selfloop transitions, 1094 changer transitions 24/1782 dead transitions. [2024-11-12 16:32:13,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 1782 transitions, 55236 flow [2024-11-12 16:32:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-12 16:32:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-12 16:32:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 633 transitions. [2024-11-12 16:32:13,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39316770186335404 [2024-11-12 16:32:13,560 INFO L175 Difference]: Start difference. First operand has 635 places, 1456 transitions, 44339 flow. Second operand 70 states and 633 transitions. [2024-11-12 16:32:13,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 1782 transitions, 55236 flow [2024-11-12 16:32:17,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 1782 transitions, 55097 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-11-12 16:32:17,497 INFO L231 Difference]: Finished difference. Result has 727 places, 1638 transitions, 54434 flow [2024-11-12 16:32:17,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=44219, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=913, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=54434, PETRI_PLACES=727, PETRI_TRANSITIONS=1638} [2024-11-12 16:32:17,499 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 702 predicate places. [2024-11-12 16:32:17,499 INFO L471 AbstractCegarLoop]: Abstraction has has 727 places, 1638 transitions, 54434 flow [2024-11-12 16:32:17,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:32:17,500 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:32:17,500 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:32:17,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-12 16:32:17,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:32:17,701 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:32:17,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:32:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash -27474382, now seen corresponding path program 21 times [2024-11-12 16:32:17,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:32:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272697650] [2024-11-12 16:32:17,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:32:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:32:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:32:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:32:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272697650] [2024-11-12 16:32:17,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272697650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:32:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833557778] [2024-11-12 16:32:17,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:32:17,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:32:17,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:32:17,948 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:32:17,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 16:32:17,999 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:32:17,999 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:32:18,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 16:32:18,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:32:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:18,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:32:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:32:18,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833557778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:32:18,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:32:18,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-12 16:32:18,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609532854] [2024-11-12 16:32:18,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:32:18,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 16:32:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:32:18,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 16:32:18,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 16:32:18,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-12 16:32:18,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 1638 transitions, 54434 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:32:18,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:32:18,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-12 16:32:18,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:32:25,040 INFO L124 PetriNetUnfolderBase]: 3834/6941 cut-off events. [2024-11-12 16:32:25,040 INFO L125 PetriNetUnfolderBase]: For 296580/296580 co-relation queries the response was YES. [2024-11-12 16:32:25,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95242 conditions, 6941 events. 3834/6941 cut-off events. For 296580/296580 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 49332 event pairs, 109 based on Foata normal form. 9/6950 useless extension candidates. Maximal degree in co-relation 94937. Up to 2880 conditions per place. [2024-11-12 16:32:25,144 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 628 selfloop transitions, 1372 changer transitions 20/2021 dead transitions. [2024-11-12 16:32:25,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 806 places, 2021 transitions, 66925 flow [2024-11-12 16:32:25,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-12 16:32:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-12 16:32:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 744 transitions. [2024-11-12 16:32:25,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38509316770186336 [2024-11-12 16:32:25,145 INFO L175 Difference]: Start difference. First operand has 727 places, 1638 transitions, 54434 flow. Second operand 84 states and 744 transitions. [2024-11-12 16:32:25,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 806 places, 2021 transitions, 66925 flow