./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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-more-nonblocking-counter-alt2.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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:49:50,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:49:50,429 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:49:50,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:49:50,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:49:50,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:49:50,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:49:50,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:49:50,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:49:50,470 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:49:50,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:49:50,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:49:50,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:49:50,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:49:50,472 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:49:50,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:49:50,475 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:49:50,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:49:50,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:49:50,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:49:50,475 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:49:50,476 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:49:50,476 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:49:50,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:49:50,476 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:49:50,477 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:49:50,477 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:49:50,477 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:49:50,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:49:50,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:49:50,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:49:50,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:49:50,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:49:50,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:49:50,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:49:50,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:49:50,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:49:50,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:49:50,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:49:50,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:49:50,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:49:50,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:49:50,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-11-22 21:49:50,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:49:50,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:49:50,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:49:50,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:49:50,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:49:50,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-22 21:49:51,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:49:52,102 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:49:52,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-22 21:49:52,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86d8ba3e/2c1ff92ee0714cd59bf43e9dec455c3a/FLAGca47f7bbc [2024-11-22 21:49:52,521 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86d8ba3e/2c1ff92ee0714cd59bf43e9dec455c3a [2024-11-22 21:49:52,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:49:52,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:49:52,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:49:52,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:49:52,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:49:52,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732d43e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52, skipping insertion in model container [2024-11-22 21:49:52,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:49:52,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:49:52,723 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:49:52,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:49:52,753 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:49:52,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52 WrapperNode [2024-11-22 21:49:52,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:49:52,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:49:52,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:49:52,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:49:52,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,779 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 46 [2024-11-22 21:49:52,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:49:52,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:49:52,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:49:52,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:49:52,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,802 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]. [2024-11-22 21:49:52,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:49:52,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:49:52,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:49:52,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:49:52,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:49:52,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:52,837 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) [2024-11-22 21:49:52,838 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 [2024-11-22 21:49:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:49:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:49:52,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:49:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:49:52,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:49:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:49:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:49:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:49:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:49:52,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:49:52,871 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:49:52,942 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:49:52,943 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:49:53,145 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:49:53,145 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:49:53,270 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:49:53,270 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:49:53,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:53 BoogieIcfgContainer [2024-11-22 21:49:53,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:49:53,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:49:53,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:49:53,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:49:53,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:49:52" (1/3) ... [2024-11-22 21:49:53,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752ec656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:53, skipping insertion in model container [2024-11-22 21:49:53,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (2/3) ... [2024-11-22 21:49:53,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752ec656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:53, skipping insertion in model container [2024-11-22 21:49:53,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:53" (3/3) ... [2024-11-22 21:49:53,279 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-22 21:49:53,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:49:53,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:49:53,292 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:49:53,334 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:49:53,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-22 21:49:53,386 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-22 21:49:53,387 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:49:53,389 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 20 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. [2024-11-22 21:49:53,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-22 21:49:53,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-22 21:49:53,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:49:53,410 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;@a25fd92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:49:53,410 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 21:49:53,420 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:49:53,420 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-22 21:49:53,421 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:49:53,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:53,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:53,422 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)] === [2024-11-22 21:49:53,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash 153611902, now seen corresponding path program 1 times [2024-11-22 21:49:53,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:53,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196250328] [2024-11-22 21:49:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:53,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196250328] [2024-11-22 21:49:53,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196250328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:53,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:53,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:49:53,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028843680] [2024-11-22 21:49:53,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:53,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:49:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:49:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:49:53,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-22 21:49:53,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-22 21:49:53,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:53,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-22 21:49:53,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:53,831 INFO L124 PetriNetUnfolderBase]: 73/148 cut-off events. [2024-11-22 21:49:53,831 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-22 21:49:53,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 148 events. 73/148 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 436 event pairs, 22 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 256. Up to 74 conditions per place. [2024-11-22 21:49:53,834 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-22 21:49:53,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 127 flow [2024-11-22 21:49:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:49:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:49:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-22 21:49:53,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-22 21:49:53,845 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 3 states and 45 transitions. [2024-11-22 21:49:53,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 127 flow [2024-11-22 21:49:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:49:53,849 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 52 flow [2024-11-22 21:49:53,850 INFO L260 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-22 21:49:53,853 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2024-11-22 21:49:53,853 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 52 flow [2024-11-22 21:49:53,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-22 21:49:53,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:53,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:53,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:49:53,854 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)] === [2024-11-22 21:49:53,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash 178506475, now seen corresponding path program 1 times [2024-11-22 21:49:53,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:53,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297441773] [2024-11-22 21:49:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:53,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:53,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297441773] [2024-11-22 21:49:53,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297441773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:53,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:53,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:49:53,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693172814] [2024-11-22 21:49:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:53,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:53,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-22 21:49:53,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-22 21:49:53,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:54,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-22 21:49:54,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:54,099 INFO L124 PetriNetUnfolderBase]: 142/260 cut-off events. [2024-11-22 21:49:54,100 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-22 21:49:54,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 260 events. 142/260 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 868 event pairs, 81 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 277. Up to 179 conditions per place. [2024-11-22 21:49:54,103 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-11-22 21:49:54,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 117 flow [2024-11-22 21:49:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-22 21:49:54,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-11-22 21:49:54,106 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 52 flow. Second operand 4 states and 45 transitions. [2024-11-22 21:49:54,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 117 flow [2024-11-22 21:49:54,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:49:54,107 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-22 21:49:54,108 INFO L260 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} [2024-11-22 21:49:54,109 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-22 21:49:54,109 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-22 21:49:54,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-22 21:49:54,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:54,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:54,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:49:54,111 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)] === [2024-11-22 21:49:54,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:54,111 INFO L85 PathProgramCache]: Analyzing trace with hash 808698325, now seen corresponding path program 1 times [2024-11-22 21:49:54,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:54,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580728940] [2024-11-22 21:49:54,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:54,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:54,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:54,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580728940] [2024-11-22 21:49:54,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580728940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:54,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886401791] [2024-11-22 21:49:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:54,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:54,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:54,413 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) [2024-11-22 21:49:54,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:49:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:54,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 21:49:54,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:54,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886401791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:54,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:54,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 12 [2024-11-22 21:49:54,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865233704] [2024-11-22 21:49:54,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:54,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:49:54,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:49:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:49:54,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:49:54,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2024-11-22 21:49:54,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:54,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:49:54,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:55,139 INFO L124 PetriNetUnfolderBase]: 402/697 cut-off events. [2024-11-22 21:49:55,139 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-11-22 21:49:55,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 697 events. 402/697 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2889 event pairs, 5 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 598. Up to 184 conditions per place. [2024-11-22 21:49:55,145 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 77 selfloop transitions, 17 changer transitions 10/105 dead transitions. [2024-11-22 21:49:55,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 105 transitions, 522 flow [2024-11-22 21:49:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:49:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:49:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-11-22 21:49:55,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5810276679841897 [2024-11-22 21:49:55,150 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 11 states and 147 transitions. [2024-11-22 21:49:55,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 105 transitions, 522 flow [2024-11-22 21:49:55,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 105 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:55,152 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 197 flow [2024-11-22 21:49:55,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=197, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-11-22 21:49:55,153 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2024-11-22 21:49:55,153 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 197 flow [2024-11-22 21:49:55,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2024-11-22 21:49:55,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:55,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:55,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:49:55,357 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 [2024-11-22 21:49:55,358 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)] === [2024-11-22 21:49:55,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash -647721243, now seen corresponding path program 2 times [2024-11-22 21:49:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:55,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652813084] [2024-11-22 21:49:55,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:49:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:55,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:49:55,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:55,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652813084] [2024-11-22 21:49:55,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652813084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:55,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412563426] [2024-11-22 21:49:55,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:49:55,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:55,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:55,464 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) [2024-11-22 21:49:55,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:49:55,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:49:55,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:55,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:49:55,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:55,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:49:55,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412563426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:55,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:49:55,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 21:49:55,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773762003] [2024-11-22 21:49:55,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:55,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:49:55,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:55,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:49:55,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:49:55,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:49:55,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-11-22 21:49:55,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:55,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:49:55,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:55,610 INFO L124 PetriNetUnfolderBase]: 396/687 cut-off events. [2024-11-22 21:49:55,611 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2024-11-22 21:49:55,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 687 events. 396/687 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2820 event pairs, 122 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 605 conditions per place. [2024-11-22 21:49:55,614 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 43 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2024-11-22 21:49:55,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 368 flow [2024-11-22 21:49:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:49:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:49:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-11-22 21:49:55,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-22 21:49:55,616 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 197 flow. Second operand 5 states and 55 transitions. [2024-11-22 21:49:55,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 368 flow [2024-11-22 21:49:55,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 340 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-22 21:49:55,621 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 229 flow [2024-11-22 21:49:55,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-22 21:49:55,622 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2024-11-22 21:49:55,622 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 229 flow [2024-11-22 21:49:55,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-11-22 21:49:55,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:55,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:55,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 21:49:55,823 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 [2024-11-22 21:49:55,823 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)] === [2024-11-22 21:49:55,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:55,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1711533315, now seen corresponding path program 3 times [2024-11-22 21:49:55,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:55,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390942784] [2024-11-22 21:49:55,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:49:55,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:55,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:49:55,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:55,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390942784] [2024-11-22 21:49:55,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390942784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666710904] [2024-11-22 21:49:55,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:49:55,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:55,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:55,934 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) [2024-11-22 21:49:55,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:49:55,972 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:49:55,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:55,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 21:49:55,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:56,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:56,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666710904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:56,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:56,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-22 21:49:56,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621479437] [2024-11-22 21:49:56,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:56,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:49:56,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:56,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:49:56,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:49:56,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:49:56,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 229 flow. Second operand has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:56,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:56,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:49:56,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:56,881 INFO L124 PetriNetUnfolderBase]: 692/1167 cut-off events. [2024-11-22 21:49:56,881 INFO L125 PetriNetUnfolderBase]: For 1580/1580 co-relation queries the response was YES. [2024-11-22 21:49:56,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 1167 events. 692/1167 cut-off events. For 1580/1580 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5340 event pairs, 53 based on Foata normal form. 35/1202 useless extension candidates. Maximal degree in co-relation 3654. Up to 367 conditions per place. [2024-11-22 21:49:56,888 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 89 selfloop transitions, 62 changer transitions 6/158 dead transitions. [2024-11-22 21:49:56,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 158 transitions, 1126 flow [2024-11-22 21:49:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 21:49:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 21:49:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 194 transitions. [2024-11-22 21:49:56,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217391304347826 [2024-11-22 21:49:56,891 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 229 flow. Second operand 20 states and 194 transitions. [2024-11-22 21:49:56,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 158 transitions, 1126 flow [2024-11-22 21:49:56,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 158 transitions, 1118 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 21:49:56,897 INFO L231 Difference]: Finished difference. Result has 77 places, 99 transitions, 869 flow [2024-11-22 21:49:56,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=869, PETRI_PLACES=77, PETRI_TRANSITIONS=99} [2024-11-22 21:49:56,897 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 52 predicate places. [2024-11-22 21:49:56,898 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 99 transitions, 869 flow [2024-11-22 21:49:56,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:56,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:56,898 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:56,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 21:49:57,102 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 [2024-11-22 21:49:57,103 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)] === [2024-11-22 21:49:57,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -418985660, now seen corresponding path program 4 times [2024-11-22 21:49:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:57,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941342442] [2024-11-22 21:49:57,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:49:57,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:57,121 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:49:57,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941342442] [2024-11-22 21:49:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941342442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:57,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564901047] [2024-11-22 21:49:57,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:49:57,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:57,489 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) [2024-11-22 21:49:57,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:49:57,524 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:49:57,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:49:57,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:49:57,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:57,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:57,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564901047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:57,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:57,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 24 [2024-11-22 21:49:57,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069720234] [2024-11-22 21:49:57,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:57,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 21:49:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 21:49:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-22 21:49:57,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:49:57,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 99 transitions, 869 flow. Second operand has 24 states, 24 states have (on average 6.041666666666667) internal successors, (145), 24 states have internal predecessors, (145), 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) [2024-11-22 21:49:57,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:57,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:49:57,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:59,576 INFO L124 PetriNetUnfolderBase]: 1423/2365 cut-off events. [2024-11-22 21:49:59,576 INFO L125 PetriNetUnfolderBase]: For 15264/15264 co-relation queries the response was YES. [2024-11-22 21:49:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12182 conditions, 2365 events. 1423/2365 cut-off events. For 15264/15264 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12186 event pairs, 8 based on Foata normal form. 25/2390 useless extension candidates. Maximal degree in co-relation 11760. Up to 587 conditions per place. [2024-11-22 21:49:59,592 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 183 selfloop transitions, 294 changer transitions 43/521 dead transitions. [2024-11-22 21:49:59,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 521 transitions, 5531 flow [2024-11-22 21:49:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-22 21:49:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-22 21:49:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 460 transitions. [2024-11-22 21:49:59,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-22 21:49:59,596 INFO L175 Difference]: Start difference. First operand has 77 places, 99 transitions, 869 flow. Second operand 50 states and 460 transitions. [2024-11-22 21:49:59,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 521 transitions, 5531 flow [2024-11-22 21:49:59,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 521 transitions, 5077 flow, removed 222 selfloop flow, removed 3 redundant places. [2024-11-22 21:49:59,652 INFO L231 Difference]: Finished difference. Result has 151 places, 355 transitions, 4178 flow [2024-11-22 21:49:59,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4178, PETRI_PLACES=151, PETRI_TRANSITIONS=355} [2024-11-22 21:49:59,654 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 126 predicate places. [2024-11-22 21:49:59,655 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 355 transitions, 4178 flow [2024-11-22 21:49:59,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.041666666666667) internal successors, (145), 24 states have internal predecessors, (145), 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) [2024-11-22 21:49:59,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:59,655 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:59,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:49:59,856 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 [2024-11-22 21:49:59,856 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)] === [2024-11-22 21:49:59,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1624489724, now seen corresponding path program 5 times [2024-11-22 21:49:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467513869] [2024-11-22 21:49:59,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:49:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:59,871 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:49:59,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467513869] [2024-11-22 21:50:00,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467513869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532627683] [2024-11-22 21:50:00,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:50:00,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:00,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:00,028 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) [2024-11-22 21:50:00,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:50:00,062 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:50:00,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:00,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:50:00,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:00,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532627683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:00,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 8] total 16 [2024-11-22 21:50:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019717878] [2024-11-22 21:50:00,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:00,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 21:50:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 21:50:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-22 21:50:00,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:50:00,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 355 transitions, 4178 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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) [2024-11-22 21:50:00,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:00,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:50:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:01,453 INFO L124 PetriNetUnfolderBase]: 1763/2934 cut-off events. [2024-11-22 21:50:01,453 INFO L125 PetriNetUnfolderBase]: For 49066/49066 co-relation queries the response was YES. [2024-11-22 21:50:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20320 conditions, 2934 events. 1763/2934 cut-off events. For 49066/49066 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15941 event pairs, 24 based on Foata normal form. 29/2963 useless extension candidates. Maximal degree in co-relation 19853. Up to 658 conditions per place. [2024-11-22 21:50:01,482 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 250 selfloop transitions, 424 changer transitions 15/690 dead transitions. [2024-11-22 21:50:01,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 690 transitions, 9959 flow [2024-11-22 21:50:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-22 21:50:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-22 21:50:01,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 326 transitions. [2024-11-22 21:50:01,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41687979539641945 [2024-11-22 21:50:01,485 INFO L175 Difference]: Start difference. First operand has 151 places, 355 transitions, 4178 flow. Second operand 34 states and 326 transitions. [2024-11-22 21:50:01,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 690 transitions, 9959 flow [2024-11-22 21:50:01,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 690 transitions, 9080 flow, removed 417 selfloop flow, removed 8 redundant places. [2024-11-22 21:50:01,674 INFO L231 Difference]: Finished difference. Result has 194 places, 575 transitions, 8227 flow [2024-11-22 21:50:01,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3709, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8227, PETRI_PLACES=194, PETRI_TRANSITIONS=575} [2024-11-22 21:50:01,675 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 169 predicate places. [2024-11-22 21:50:01,676 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 575 transitions, 8227 flow [2024-11-22 21:50:01,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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) [2024-11-22 21:50:01,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:01,677 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:01,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:50:01,877 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 [2024-11-22 21:50:01,878 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)] === [2024-11-22 21:50:01,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash -500372264, now seen corresponding path program 6 times [2024-11-22 21:50:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825076350] [2024-11-22 21:50:01,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:50:01,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:01,896 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:50:01,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:02,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825076350] [2024-11-22 21:50:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825076350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107463736] [2024-11-22 21:50:02,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:50:02,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:02,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:02,047 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) [2024-11-22 21:50:02,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:50:02,088 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:50:02,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:02,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:50:02,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:02,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:02,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107463736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:02,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:02,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-11-22 21:50:02,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787860718] [2024-11-22 21:50:02,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:02,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:50:02,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:02,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:50:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:50:02,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:50:02,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 575 transitions, 8227 flow. Second operand has 19 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 19 states have internal predecessors, (129), 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) [2024-11-22 21:50:02,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:02,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:50:02,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:03,793 INFO L124 PetriNetUnfolderBase]: 2093/3490 cut-off events. [2024-11-22 21:50:03,793 INFO L125 PetriNetUnfolderBase]: For 77023/77023 co-relation queries the response was YES. [2024-11-22 21:50:03,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26476 conditions, 3490 events. 2093/3490 cut-off events. For 77023/77023 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19774 event pairs, 35 based on Foata normal form. 80/3570 useless extension candidates. Maximal degree in co-relation 26391. Up to 727 conditions per place. [2024-11-22 21:50:03,828 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 303 selfloop transitions, 562 changer transitions 3/869 dead transitions. [2024-11-22 21:50:03,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 869 transitions, 14173 flow [2024-11-22 21:50:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 21:50:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-22 21:50:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 325 transitions. [2024-11-22 21:50:03,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4281949934123847 [2024-11-22 21:50:03,829 INFO L175 Difference]: Start difference. First operand has 194 places, 575 transitions, 8227 flow. Second operand 33 states and 325 transitions. [2024-11-22 21:50:03,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 869 transitions, 14173 flow [2024-11-22 21:50:04,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 869 transitions, 13493 flow, removed 338 selfloop flow, removed 3 redundant places. [2024-11-22 21:50:04,161 INFO L231 Difference]: Finished difference. Result has 238 places, 740 transitions, 12285 flow [2024-11-22 21:50:04,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=7800, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=12285, PETRI_PLACES=238, PETRI_TRANSITIONS=740} [2024-11-22 21:50:04,162 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 213 predicate places. [2024-11-22 21:50:04,162 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 740 transitions, 12285 flow [2024-11-22 21:50:04,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 19 states have internal predecessors, (129), 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) [2024-11-22 21:50:04,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:04,163 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:04,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:50:04,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:04,363 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)] === [2024-11-22 21:50:04,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash -592233352, now seen corresponding path program 7 times [2024-11-22 21:50:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:04,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94244996] [2024-11-22 21:50:04,364 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:50:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:04,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94244996] [2024-11-22 21:50:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94244996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042716300] [2024-11-22 21:50:04,524 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:50:04,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:04,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:04,527 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) [2024-11-22 21:50:04,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:50:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:04,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:50:04,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:04,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:04,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042716300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:04,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:04,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2024-11-22 21:50:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316442490] [2024-11-22 21:50:04,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:04,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:50:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:50:04,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:50:04,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-22 21:50:04,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 740 transitions, 12285 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2024-11-22 21:50:04,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:04,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-22 21:50:04,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:07,103 INFO L124 PetriNetUnfolderBase]: 3292/5699 cut-off events. [2024-11-22 21:50:07,103 INFO L125 PetriNetUnfolderBase]: For 181526/181634 co-relation queries the response was YES. [2024-11-22 21:50:07,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48140 conditions, 5699 events. 3292/5699 cut-off events. For 181526/181634 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 36761 event pairs, 56 based on Foata normal form. 146/5839 useless extension candidates. Maximal degree in co-relation 47842. Up to 1320 conditions per place. [2024-11-22 21:50:07,172 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 411 selfloop transitions, 1042 changer transitions 4/1538 dead transitions. [2024-11-22 21:50:07,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1538 transitions, 28539 flow [2024-11-22 21:50:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-22 21:50:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-22 21:50:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 481 transitions. [2024-11-22 21:50:07,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4647342995169082 [2024-11-22 21:50:07,177 INFO L175 Difference]: Start difference. First operand has 238 places, 740 transitions, 12285 flow. Second operand 45 states and 481 transitions. [2024-11-22 21:50:07,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1538 transitions, 28539 flow [2024-11-22 21:50:08,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1538 transitions, 27737 flow, removed 303 selfloop flow, removed 9 redundant places. [2024-11-22 21:50:08,297 INFO L231 Difference]: Finished difference. Result has 295 places, 1324 transitions, 26180 flow [2024-11-22 21:50:08,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11822, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=491, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=26180, PETRI_PLACES=295, PETRI_TRANSITIONS=1324} [2024-11-22 21:50:08,298 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 270 predicate places. [2024-11-22 21:50:08,298 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 1324 transitions, 26180 flow [2024-11-22 21:50:08,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2024-11-22 21:50:08,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:08,299 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:08,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 21:50:08,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:08,500 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)] === [2024-11-22 21:50:08,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash -959907964, now seen corresponding path program 8 times [2024-11-22 21:50:08,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148976167] [2024-11-22 21:50:08,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:08,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:08,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148976167] [2024-11-22 21:50:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148976167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44946435] [2024-11-22 21:50:08,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:08,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:08,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:08,654 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) [2024-11-22 21:50:08,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:50:08,691 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:08,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:08,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:50:08,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:08,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44946435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:08,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:08,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 15 [2024-11-22 21:50:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002796744] [2024-11-22 21:50:08,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:08,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 21:50:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 21:50:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-22 21:50:08,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:50:08,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1324 transitions, 26180 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-22 21:50:08,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:08,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:50:08,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:12,850 INFO L124 PetriNetUnfolderBase]: 5258/8778 cut-off events. [2024-11-22 21:50:12,850 INFO L125 PetriNetUnfolderBase]: For 356936/356936 co-relation queries the response was YES. [2024-11-22 21:50:12,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84015 conditions, 8778 events. 5258/8778 cut-off events. For 356936/356936 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 58046 event pairs, 52 based on Foata normal form. 47/8825 useless extension candidates. Maximal degree in co-relation 82093. Up to 2053 conditions per place. [2024-11-22 21:50:12,942 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 568 selfloop transitions, 1774 changer transitions 19/2362 dead transitions. [2024-11-22 21:50:12,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 2362 transitions, 51801 flow [2024-11-22 21:50:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 21:50:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-22 21:50:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 412 transitions. [2024-11-22 21:50:12,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.416582406471183 [2024-11-22 21:50:12,944 INFO L175 Difference]: Start difference. First operand has 295 places, 1324 transitions, 26180 flow. Second operand 43 states and 412 transitions. [2024-11-22 21:50:12,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 2362 transitions, 51801 flow [2024-11-22 21:50:16,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 2362 transitions, 50800 flow, removed 500 selfloop flow, removed 1 redundant places. [2024-11-22 21:50:16,714 INFO L231 Difference]: Finished difference. Result has 359 places, 2206 transitions, 51490 flow [2024-11-22 21:50:16,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=25477, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=990, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=51490, PETRI_PLACES=359, PETRI_TRANSITIONS=2206} [2024-11-22 21:50:16,715 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 334 predicate places. [2024-11-22 21:50:16,715 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 2206 transitions, 51490 flow [2024-11-22 21:50:16,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-22 21:50:16,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:16,715 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:16,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 21:50:16,916 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,SelfDestructingSolverStorable9 [2024-11-22 21:50:16,916 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)] === [2024-11-22 21:50:16,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1441668228, now seen corresponding path program 9 times [2024-11-22 21:50:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:16,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572127525] [2024-11-22 21:50:16,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:50:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:16,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:50:16,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572127525] [2024-11-22 21:50:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572127525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807211526] [2024-11-22 21:50:17,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:50:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:17,112 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) [2024-11-22 21:50:17,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 21:50:17,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:50:17,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:17,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:50:17,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:17,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:17,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807211526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:17,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:17,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2024-11-22 21:50:17,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251300048] [2024-11-22 21:50:17,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:17,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:50:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:50:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:50:17,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-22 21:50:17,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 2206 transitions, 51490 flow. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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) [2024-11-22 21:50:17,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:17,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-22 21:50:17,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:22,076 INFO L124 PetriNetUnfolderBase]: 5301/9055 cut-off events. [2024-11-22 21:50:22,077 INFO L125 PetriNetUnfolderBase]: For 375764/375810 co-relation queries the response was YES. [2024-11-22 21:50:22,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98240 conditions, 9055 events. 5301/9055 cut-off events. For 375764/375810 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 62856 event pairs, 194 based on Foata normal form. 16/9069 useless extension candidates. Maximal degree in co-relation 98049. Up to 2188 conditions per place. [2024-11-22 21:50:22,195 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 533 selfloop transitions, 1763 changer transitions 19/2456 dead transitions. [2024-11-22 21:50:22,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 2456 transitions, 62104 flow [2024-11-22 21:50:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:50:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:50:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 187 transitions. [2024-11-22 21:50:22,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4279176201372998 [2024-11-22 21:50:22,197 INFO L175 Difference]: Start difference. First operand has 359 places, 2206 transitions, 51490 flow. Second operand 19 states and 187 transitions. [2024-11-22 21:50:22,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 2456 transitions, 62104 flow [2024-11-22 21:50:30,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 2456 transitions, 59782 flow, removed 1152 selfloop flow, removed 5 redundant places. [2024-11-22 21:50:30,550 INFO L231 Difference]: Finished difference. Result has 380 places, 2402 transitions, 61187 flow [2024-11-22 21:50:30,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=49682, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=61187, PETRI_PLACES=380, PETRI_TRANSITIONS=2402} [2024-11-22 21:50:30,552 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 355 predicate places. [2024-11-22 21:50:30,552 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 2402 transitions, 61187 flow [2024-11-22 21:50:30,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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) [2024-11-22 21:50:30,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:30,552 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:30,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 21:50:30,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:30,753 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)] === [2024-11-22 21:50:30,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1271467260, now seen corresponding path program 10 times [2024-11-22 21:50:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:30,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029717090] [2024-11-22 21:50:30,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:50:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:30,761 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:50:30,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029717090] [2024-11-22 21:50:30,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029717090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:30,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484685236] [2024-11-22 21:50:30,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:50:30,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:30,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:30,904 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) [2024-11-22 21:50:30,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 21:50:30,940 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:50:30,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:30,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:50:30,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:31,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:31,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484685236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:31,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:31,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-22 21:50:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126818902] [2024-11-22 21:50:31,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:31,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:50:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:50:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:50:31,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-22 21:50:31,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 2402 transitions, 61187 flow. Second operand has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 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) [2024-11-22 21:50:31,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:31,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-22 21:50:31,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:37,173 INFO L124 PetriNetUnfolderBase]: 5836/9978 cut-off events. [2024-11-22 21:50:37,174 INFO L125 PetriNetUnfolderBase]: For 341282/341336 co-relation queries the response was YES. [2024-11-22 21:50:37,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113694 conditions, 9978 events. 5836/9978 cut-off events. For 341282/341336 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 70096 event pairs, 253 based on Foata normal form. 77/10053 useless extension candidates. Maximal degree in co-relation 112202. Up to 2343 conditions per place. [2024-11-22 21:50:37,312 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 528 selfloop transitions, 2110 changer transitions 8/2787 dead transitions. [2024-11-22 21:50:37,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 2787 transitions, 75804 flow [2024-11-22 21:50:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 21:50:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 21:50:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 253 transitions. [2024-11-22 21:50:37,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-22 21:50:37,314 INFO L175 Difference]: Start difference. First operand has 380 places, 2402 transitions, 61187 flow. Second operand 23 states and 253 transitions. [2024-11-22 21:50:37,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 2787 transitions, 75804 flow [2024-11-22 21:50:44,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 2787 transitions, 75647 flow, removed 78 selfloop flow, removed 1 redundant places. [2024-11-22 21:50:44,568 INFO L231 Difference]: Finished difference. Result has 410 places, 2685 transitions, 77142 flow [2024-11-22 21:50:44,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60951, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1838, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=77142, PETRI_PLACES=410, PETRI_TRANSITIONS=2685} [2024-11-22 21:50:44,570 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 385 predicate places. [2024-11-22 21:50:44,570 INFO L471 AbstractCegarLoop]: Abstraction has has 410 places, 2685 transitions, 77142 flow [2024-11-22 21:50:44,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 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) [2024-11-22 21:50:44,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:44,570 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:44,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 21:50:44,770 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,SelfDestructingSolverStorable11 [2024-11-22 21:50:44,771 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)] === [2024-11-22 21:50:44,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1510191010, now seen corresponding path program 11 times [2024-11-22 21:50:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:44,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115804994] [2024-11-22 21:50:44,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:50:44,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:44,776 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:50:44,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:44,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:44,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115804994] [2024-11-22 21:50:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115804994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:44,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764556280] [2024-11-22 21:50:44,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:50:44,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:44,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:44,880 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) [2024-11-22 21:50:44,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 21:50:44,909 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:50:44,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:44,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 21:50:44,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:44,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:45,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764556280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:45,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:45,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-22 21:50:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017618979] [2024-11-22 21:50:45,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:45,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:50:45,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:45,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:50:45,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:50:45,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-22 21:50:45,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 2685 transitions, 77142 flow. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 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) [2024-11-22 21:50:45,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:45,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-22 21:50:45,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:53,664 INFO L124 PetriNetUnfolderBase]: 7367/12525 cut-off events. [2024-11-22 21:50:53,664 INFO L125 PetriNetUnfolderBase]: For 523993/524088 co-relation queries the response was YES. [2024-11-22 21:50:53,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158369 conditions, 12525 events. 7367/12525 cut-off events. For 523993/524088 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 90243 event pairs, 190 based on Foata normal form. 161/12686 useless extension candidates. Maximal degree in co-relation 156374. Up to 2922 conditions per place. [2024-11-22 21:50:53,838 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 434 selfloop transitions, 3012 changer transitions 15/3602 dead transitions. [2024-11-22 21:50:53,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 3602 transitions, 110982 flow [2024-11-22 21:50:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 21:50:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 21:50:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 271 transitions. [2024-11-22 21:50:53,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4363929146537842 [2024-11-22 21:50:53,839 INFO L175 Difference]: Start difference. First operand has 410 places, 2685 transitions, 77142 flow. Second operand 27 states and 271 transitions. [2024-11-22 21:50:53,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 3602 transitions, 110982 flow [2024-11-22 21:51:05,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 3602 transitions, 110443 flow, removed 214 selfloop flow, removed 4 redundant places. [2024-11-22 21:51:05,582 INFO L231 Difference]: Finished difference. Result has 437 places, 3446 transitions, 109893 flow [2024-11-22 21:51:05,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=76494, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=109893, PETRI_PLACES=437, PETRI_TRANSITIONS=3446} [2024-11-22 21:51:05,585 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 412 predicate places. [2024-11-22 21:51:05,585 INFO L471 AbstractCegarLoop]: Abstraction has has 437 places, 3446 transitions, 109893 flow [2024-11-22 21:51:05,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 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) [2024-11-22 21:51:05,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:51:05,585 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:51:05,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 21:51:05,786 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,SelfDestructingSolverStorable12 [2024-11-22 21:51:05,786 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)] === [2024-11-22 21:51:05,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:51:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1054006554, now seen corresponding path program 12 times [2024-11-22 21:51:05,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:51:05,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014915745] [2024-11-22 21:51:05,786 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:51:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:51:05,794 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 21:51:05,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:51:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:51:06,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:51:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014915745] [2024-11-22 21:51:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014915745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:51:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770474037] [2024-11-22 21:51:06,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:51:06,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:51:06,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:51:06,040 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) [2024-11-22 21:51:06,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 21:51:06,072 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 21:51:06,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:51:06,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:51:06,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:51:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:51:06,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:51:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:51:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770474037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:51:06,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:51:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 25 [2024-11-22 21:51:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802733059] [2024-11-22 21:51:06,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:51:06,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 21:51:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:51:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 21:51:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-11-22 21:51:06,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-22 21:51:06,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 3446 transitions, 109893 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) [2024-11-22 21:51:06,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:51:06,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-22 21:51:06,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:51:18,291 INFO L124 PetriNetUnfolderBase]: 8229/13623 cut-off events. [2024-11-22 21:51:18,292 INFO L125 PetriNetUnfolderBase]: For 570778/570778 co-relation queries the response was YES. [2024-11-22 21:51:18,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182364 conditions, 13623 events. 8229/13623 cut-off events. For 570778/570778 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 95064 event pairs, 23 based on Foata normal form. 40/13663 useless extension candidates. Maximal degree in co-relation 180830. Up to 3383 conditions per place. [2024-11-22 21:51:18,528 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 578 selfloop transitions, 3237 changer transitions 19/3835 dead transitions. [2024-11-22 21:51:18,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 3835 transitions, 128749 flow [2024-11-22 21:51:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-22 21:51:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-22 21:51:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 359 transitions. [2024-11-22 21:51:18,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3806998939554613 [2024-11-22 21:51:18,529 INFO L175 Difference]: Start difference. First operand has 437 places, 3446 transitions, 109893 flow. Second operand 41 states and 359 transitions. [2024-11-22 21:51:18,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 3835 transitions, 128749 flow