./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:45,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:45,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:59:45,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:45,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:45,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:45,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:45,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:45,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:45,821 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:45,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:45,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:45,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:45,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:45,823 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:45,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:45,823 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:45,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:45,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:45,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:45,824 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:45,825 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:45,826 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:45,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:45,826 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:45,826 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:45,826 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:45,827 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:45,827 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:45,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:45,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:45,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:45,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:45,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:45,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:45,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:45,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:59:45,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:59:45,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:45,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:45,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:45,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:45,834 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-10-11 19:59:46,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:46,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:46,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:46,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:46,058 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:46,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-11 19:59:47,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:47,428 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:47,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-11 19:59:47,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/56fde0b5c/5f9a00f1efe54325a0e11d3657b12bb1/FLAGeedca7015 [2024-10-11 19:59:47,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/56fde0b5c/5f9a00f1efe54325a0e11d3657b12bb1 [2024-10-11 19:59:47,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:47,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:47,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:47,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:47,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:47,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327a422d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47, skipping insertion in model container [2024-10-11 19:59:47,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,473 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:47,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:47,665 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:59:47,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:47,689 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:59:47,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47 WrapperNode [2024-10-11 19:59:47,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:47,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:47,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:59:47,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:59:47,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,711 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 46 [2024-10-11 19:59:47,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:47,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:59:47,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:59:47,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:59:47,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,731 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 19:59:47,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:59:47,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:59:47,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:59:47,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:59:47,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (1/1) ... [2024-10-11 19:59:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:47,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:59:47,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:59:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:59:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:59:47,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:59:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:59:47,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:59:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:59:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:59:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:59:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:59:47,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:59:47,800 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:59:47,865 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:59:47,866 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:59:47,971 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:59:47,972 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:59:48,092 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:59:48,093 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:59:48,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:48 BoogieIcfgContainer [2024-10-11 19:59:48,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:59:48,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:59:48,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:59:48,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:59:48,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:59:47" (1/3) ... [2024-10-11 19:59:48,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9cdb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:48, skipping insertion in model container [2024-10-11 19:59:48,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:47" (2/3) ... [2024-10-11 19:59:48,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9cdb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:48, skipping insertion in model container [2024-10-11 19:59:48,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:48" (3/3) ... [2024-10-11 19:59:48,101 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-11 19:59:48,112 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:59:48,112 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:59:48,112 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:59:48,148 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:59:48,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-10-11 19:59:48,189 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-10-11 19:59:48,189 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:59:48,191 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. [2024-10-11 19:59:48,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-10-11 19:59:48,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-10-11 19:59:48,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:59:48,209 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;@16ccaa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:59:48,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:59:48,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:59:48,215 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-10-11 19:59:48,216 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:59:48,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:48,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:48,217 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)] === [2024-10-11 19:59:48,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash 153611902, now seen corresponding path program 1 times [2024-10-11 19:59:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:48,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414273754] [2024-10-11 19:59:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414273754] [2024-10-11 19:59:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414273754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:48,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71451071] [2024-10-11 19:59:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:48,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:48,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:48,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:48,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-10-11 19:59:48,586 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) [2024-10-11 19:59:48,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:48,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-10-11 19:59:48,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:48,679 INFO L124 PetriNetUnfolderBase]: 73/148 cut-off events. [2024-10-11 19:59:48,679 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-11 19:59:48,680 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. [2024-10-11 19:59:48,682 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-10-11 19:59:48,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 127 flow [2024-10-11 19:59:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:48,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-11 19:59:48,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-10-11 19:59:48,693 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 3 states and 45 transitions. [2024-10-11 19:59:48,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 127 flow [2024-10-11 19:59:48,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:59:48,698 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 52 flow [2024-10-11 19:59:48,700 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} [2024-10-11 19:59:48,703 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2024-10-11 19:59:48,704 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 52 flow [2024-10-11 19:59:48,704 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) [2024-10-11 19:59:48,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:48,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:48,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:59:48,705 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)] === [2024-10-11 19:59:48,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 178506475, now seen corresponding path program 1 times [2024-10-11 19:59:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056575282] [2024-10-11 19:59:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:48,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:48,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056575282] [2024-10-11 19:59:48,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056575282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:48,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:48,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:48,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628006014] [2024-10-11 19:59:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:48,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:48,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:48,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:48,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 19:59:48,873 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) [2024-10-11 19:59:48,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:48,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 19:59:48,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:48,952 INFO L124 PetriNetUnfolderBase]: 142/260 cut-off events. [2024-10-11 19:59:48,953 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 19:59:48,953 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. [2024-10-11 19:59:48,957 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-10-11 19:59:48,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 117 flow [2024-10-11 19:59:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-10-11 19:59:48,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-10-11 19:59:48,959 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 52 flow. Second operand 4 states and 45 transitions. [2024-10-11 19:59:48,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 117 flow [2024-10-11 19:59:48,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:59:48,960 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-10-11 19:59:48,960 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} [2024-10-11 19:59:48,961 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-10-11 19:59:48,961 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-10-11 19:59:48,961 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) [2024-10-11 19:59:48,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:48,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:48,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:59:48,962 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)] === [2024-10-11 19:59:48,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash 808698325, now seen corresponding path program 1 times [2024-10-11 19:59:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:48,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661234254] [2024-10-11 19:59:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:48,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:49,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661234254] [2024-10-11 19:59:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661234254] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:59:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763648407] [2024-10-11 19:59:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:49,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:49,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:59:49,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:59:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:49,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:59:49,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:49,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:49,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763648407] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:49,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:59:49,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 10 [2024-10-11 19:59:49,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434969311] [2024-10-11 19:59:49,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:49,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:59:49,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:59:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:59:49,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 19:59:49,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:49,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:49,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 19:59:49,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:49,892 INFO L124 PetriNetUnfolderBase]: 428/744 cut-off events. [2024-10-11 19:59:49,893 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-10-11 19:59:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 744 events. 428/744 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3078 event pairs, 64 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 598. Up to 184 conditions per place. [2024-10-11 19:59:49,899 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 70 selfloop transitions, 16 changer transitions 13/100 dead transitions. [2024-10-11 19:59:49,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 100 transitions, 493 flow [2024-10-11 19:59:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:59:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:59:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-10-11 19:59:49,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-11 19:59:49,901 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 10 states and 138 transitions. [2024-10-11 19:59:49,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 100 transitions, 493 flow [2024-10-11 19:59:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 100 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:49,904 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 189 flow [2024-10-11 19:59:49,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=189, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-10-11 19:59:49,905 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-10-11 19:59:49,905 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 189 flow [2024-10-11 19:59:49,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:49,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:49,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:49,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:59:50,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:50,111 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)] === [2024-10-11 19:59:50,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1679184239, now seen corresponding path program 2 times [2024-10-11 19:59:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:50,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096331954] [2024-10-11 19:59:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:50,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:50,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:50,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096331954] [2024-10-11 19:59:50,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096331954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:59:50,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583484317] [2024-10-11 19:59:50,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:50,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:50,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:50,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:59:50,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:59:50,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:59:50,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:50,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:59:50,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:50,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:50,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583484317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:50,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:59:50,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 8] total 16 [2024-10-11 19:59:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521814458] [2024-10-11 19:59:50,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:50,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:59:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:59:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-10-11 19:59:50,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 19:59:50,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 189 flow. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:50,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:50,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 19:59:50,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:51,186 INFO L124 PetriNetUnfolderBase]: 581/1001 cut-off events. [2024-10-11 19:59:51,187 INFO L125 PetriNetUnfolderBase]: For 1127/1127 co-relation queries the response was YES. [2024-10-11 19:59:51,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1001 events. 581/1001 cut-off events. For 1127/1127 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4615 event pairs, 0 based on Foata normal form. 24/945 useless extension candidates. Maximal degree in co-relation 2742. Up to 225 conditions per place. [2024-10-11 19:59:51,192 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 77 selfloop transitions, 88 changer transitions 9/175 dead transitions. [2024-10-11 19:59:51,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 175 transitions, 1249 flow [2024-10-11 19:59:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 19:59:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 19:59:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 190 transitions. [2024-10-11 19:59:51,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-10-11 19:59:51,194 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 189 flow. Second operand 20 states and 190 transitions. [2024-10-11 19:59:51,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 175 transitions, 1249 flow [2024-10-11 19:59:51,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 175 transitions, 1214 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-10-11 19:59:51,201 INFO L231 Difference]: Finished difference. Result has 70 places, 118 transitions, 1065 flow [2024-10-11 19:59:51,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1065, PETRI_PLACES=70, PETRI_TRANSITIONS=118} [2024-10-11 19:59:51,202 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 45 predicate places. [2024-10-11 19:59:51,202 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 118 transitions, 1065 flow [2024-10-11 19:59:51,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:51,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:51,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:51,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:59:51,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:51,407 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)] === [2024-10-11 19:59:51,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1441668228, now seen corresponding path program 3 times [2024-10-11 19:59:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:51,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248051143] [2024-10-11 19:59:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:51,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:51,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248051143] [2024-10-11 19:59:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248051143] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:59:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410587466] [2024-10-11 19:59:51,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:59:51,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:51,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:51,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:59:51,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:59:51,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 19:59:51,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:51,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:59:51,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:51,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410587466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:51,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:59:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-10-11 19:59:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782756988] [2024-10-11 19:59:51,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:51,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 19:59:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 19:59:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-11 19:59:51,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 19:59:51,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 118 transitions, 1065 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:51,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:51,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 19:59:51,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:52,432 INFO L124 PetriNetUnfolderBase]: 868/1536 cut-off events. [2024-10-11 19:59:52,432 INFO L125 PetriNetUnfolderBase]: For 6590/6618 co-relation queries the response was YES. [2024-10-11 19:59:52,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 1536 events. 868/1536 cut-off events. For 6590/6618 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8207 event pairs, 62 based on Foata normal form. 20/1548 useless extension candidates. Maximal degree in co-relation 6748. Up to 419 conditions per place. [2024-10-11 19:59:52,443 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 99 selfloop transitions, 140 changer transitions 24/286 dead transitions. [2024-10-11 19:59:52,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 286 transitions, 2906 flow [2024-10-11 19:59:52,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 19:59:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 19:59:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 189 transitions. [2024-10-11 19:59:52,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-10-11 19:59:52,445 INFO L175 Difference]: Start difference. First operand has 70 places, 118 transitions, 1065 flow. Second operand 18 states and 189 transitions. [2024-10-11 19:59:52,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 286 transitions, 2906 flow [2024-10-11 19:59:52,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 2779 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:52,480 INFO L231 Difference]: Finished difference. Result has 97 places, 209 transitions, 2429 flow [2024-10-11 19:59:52,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2429, PETRI_PLACES=97, PETRI_TRANSITIONS=209} [2024-10-11 19:59:52,481 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 72 predicate places. [2024-10-11 19:59:52,481 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 209 transitions, 2429 flow [2024-10-11 19:59:52,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:52,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:52,482 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:52,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 19:59:52,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:52,683 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)] === [2024-10-11 19:59:52,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1202640566, now seen corresponding path program 4 times [2024-10-11 19:59:52,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:52,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278180131] [2024-10-11 19:59:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:52,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:52,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278180131] [2024-10-11 19:59:52,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278180131] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:59:52,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58897013] [2024-10-11 19:59:52,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:59:52,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:52,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:52,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:59:52,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:59:52,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:59:52,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:52,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:59:52,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:52,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:53,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58897013] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:53,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:59:53,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-11 19:59:53,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113060239] [2024-10-11 19:59:53,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:53,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 19:59:53,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 19:59:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-11 19:59:53,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 19:59:53,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 209 transitions, 2429 flow. Second operand has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:53,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:53,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 19:59:53,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:54,006 INFO L124 PetriNetUnfolderBase]: 1480/2462 cut-off events. [2024-10-11 19:59:54,006 INFO L125 PetriNetUnfolderBase]: For 22193/22193 co-relation queries the response was YES. [2024-10-11 19:59:54,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14920 conditions, 2462 events. 1480/2462 cut-off events. For 22193/22193 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12836 event pairs, 29 based on Foata normal form. 35/2497 useless extension candidates. Maximal degree in co-relation 14649. Up to 605 conditions per place. [2024-10-11 19:59:54,028 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 224 selfloop transitions, 319 changer transitions 5/549 dead transitions. [2024-10-11 19:59:54,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 549 transitions, 7334 flow [2024-10-11 19:59:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 19:59:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 19:59:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 276 transitions. [2024-10-11 19:59:54,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-11 19:59:54,031 INFO L175 Difference]: Start difference. First operand has 97 places, 209 transitions, 2429 flow. Second operand 28 states and 276 transitions. [2024-10-11 19:59:54,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 549 transitions, 7334 flow [2024-10-11 19:59:54,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 549 transitions, 7197 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:54,166 INFO L231 Difference]: Finished difference. Result has 140 places, 448 transitions, 6683 flow [2024-10-11 19:59:54,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6683, PETRI_PLACES=140, PETRI_TRANSITIONS=448} [2024-10-11 19:59:54,167 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 115 predicate places. [2024-10-11 19:59:54,167 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 448 transitions, 6683 flow [2024-10-11 19:59:54,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:54,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:54,167 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:54,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 19:59:54,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 19:59:54,368 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)] === [2024-10-11 19:59:54,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1999851034, now seen corresponding path program 5 times [2024-10-11 19:59:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614306501] [2024-10-11 19:59:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614306501] [2024-10-11 19:59:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614306501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:59:54,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003467088] [2024-10-11 19:59:54,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:59:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:54,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:59:54,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:59:54,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:59:54,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:54,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:59:54,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:54,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:54,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003467088] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:54,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:59:54,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-11 19:59:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828562395] [2024-10-11 19:59:54,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:54,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:59:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:59:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:59:54,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 19:59:54,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 448 transitions, 6683 flow. Second operand has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:54,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:54,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 19:59:54,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:57,013 INFO L124 PetriNetUnfolderBase]: 1941/3347 cut-off events. [2024-10-11 19:59:57,015 INFO L125 PetriNetUnfolderBase]: For 51842/51876 co-relation queries the response was YES. [2024-10-11 19:59:57,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24668 conditions, 3347 events. 1941/3347 cut-off events. For 51842/51876 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19607 event pairs, 27 based on Foata normal form. 82/3427 useless extension candidates. Maximal degree in co-relation 22729. Up to 792 conditions per place. [2024-10-11 19:59:57,094 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 176 selfloop transitions, 665 changer transitions 1/883 dead transitions. [2024-10-11 19:59:57,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 883 transitions, 14385 flow [2024-10-11 19:59:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-11 19:59:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-10-11 19:59:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 550 transitions. [2024-10-11 19:59:57,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4122938530734633 [2024-10-11 19:59:57,096 INFO L175 Difference]: Start difference. First operand has 140 places, 448 transitions, 6683 flow. Second operand 58 states and 550 transitions. [2024-10-11 19:59:57,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 883 transitions, 14385 flow [2024-10-11 19:59:57,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 883 transitions, 13472 flow, removed 432 selfloop flow, removed 5 redundant places. [2024-10-11 19:59:57,387 INFO L231 Difference]: Finished difference. Result has 205 places, 744 transitions, 12524 flow [2024-10-11 19:59:57,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=6302, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=12524, PETRI_PLACES=205, PETRI_TRANSITIONS=744} [2024-10-11 19:59:57,388 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 180 predicate places. [2024-10-11 19:59:57,388 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 744 transitions, 12524 flow [2024-10-11 19:59:57,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:57,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:57,389 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:57,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 19:59:57,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:57,590 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)] === [2024-10-11 19:59:57,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:57,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1835788314, now seen corresponding path program 6 times [2024-10-11 19:59:57,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:59:57,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436095505] [2024-10-11 19:59:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:57,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:59:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:57,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:59:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436095505] [2024-10-11 19:59:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436095505] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:59:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695396300] [2024-10-11 19:59:57,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:59:57,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:59:57,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:57,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:59:57,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:59:57,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 19:59:57,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:57,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:59:57,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:57,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:58,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695396300] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:58,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:59:58,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-10-11 19:59:58,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513207868] [2024-10-11 19:59:58,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:58,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 19:59:58,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:59:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 19:59:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-11 19:59:58,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 19:59:58,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 744 transitions, 12524 flow. Second operand has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:58,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:58,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 19:59:58,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:59,731 INFO L124 PetriNetUnfolderBase]: 2703/4536 cut-off events. [2024-10-11 19:59:59,731 INFO L125 PetriNetUnfolderBase]: For 51490/51490 co-relation queries the response was YES. [2024-10-11 19:59:59,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34453 conditions, 4536 events. 2703/4536 cut-off events. For 51490/51490 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 26879 event pairs, 38 based on Foata normal form. 11/4547 useless extension candidates. Maximal degree in co-relation 33099. Up to 1014 conditions per place. [2024-10-11 19:59:59,783 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 330 selfloop transitions, 830 changer transitions 3/1164 dead transitions. [2024-10-11 19:59:59,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 1164 transitions, 20931 flow [2024-10-11 19:59:59,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-11 19:59:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-11 19:59:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 359 transitions. [2024-10-11 19:59:59,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107551487414188 [2024-10-11 19:59:59,786 INFO L175 Difference]: Start difference. First operand has 205 places, 744 transitions, 12524 flow. Second operand 38 states and 359 transitions. [2024-10-11 19:59:59,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 1164 transitions, 20931 flow [2024-10-11 20:00:00,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1164 transitions, 19435 flow, removed 641 selfloop flow, removed 7 redundant places. [2024-10-11 20:00:00,354 INFO L231 Difference]: Finished difference. Result has 251 places, 1040 transitions, 18928 flow [2024-10-11 20:00:00,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11477, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18928, PETRI_PLACES=251, PETRI_TRANSITIONS=1040} [2024-10-11 20:00:00,355 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 226 predicate places. [2024-10-11 20:00:00,355 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 1040 transitions, 18928 flow [2024-10-11 20:00:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:00,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:00,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:00,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:00,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 20:00:00,556 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)] === [2024-10-11 20:00:00,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash -418985660, now seen corresponding path program 7 times [2024-10-11 20:00:00,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:00,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604364304] [2024-10-11 20:00:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:00,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:00,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604364304] [2024-10-11 20:00:00,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604364304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:00,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224358623] [2024-10-11 20:00:00,717 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 20:00:00,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:00,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:00,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:00,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 20:00:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:00,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:00:00,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:00,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224358623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:00,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:00,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-10-11 20:00:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876106172] [2024-10-11 20:00:00,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:00,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 20:00:00,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 20:00:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-10-11 20:00:00,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 20:00:00,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 1040 transitions, 18928 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:00,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:00,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 20:00:00,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:02,370 INFO L124 PetriNetUnfolderBase]: 2709/4645 cut-off events. [2024-10-11 20:00:02,371 INFO L125 PetriNetUnfolderBase]: For 59421/59435 co-relation queries the response was YES. [2024-10-11 20:00:02,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38389 conditions, 4645 events. 2709/4645 cut-off events. For 59421/59435 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28754 event pairs, 100 based on Foata normal form. 14/4659 useless extension candidates. Maximal degree in co-relation 37955. Up to 1111 conditions per place. [2024-10-11 20:00:02,482 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 321 selfloop transitions, 793 changer transitions 3/1179 dead transitions. [2024-10-11 20:00:02,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1179 transitions, 23385 flow [2024-10-11 20:00:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 20:00:02,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 20:00:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 211 transitions. [2024-10-11 20:00:02,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45869565217391306 [2024-10-11 20:00:02,485 INFO L175 Difference]: Start difference. First operand has 251 places, 1040 transitions, 18928 flow. Second operand 20 states and 211 transitions. [2024-10-11 20:00:02,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1179 transitions, 23385 flow [2024-10-11 20:00:03,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1179 transitions, 23063 flow, removed 151 selfloop flow, removed 5 redundant places. [2024-10-11 20:00:03,234 INFO L231 Difference]: Finished difference. Result has 271 places, 1131 transitions, 23216 flow [2024-10-11 20:00:03,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=18564, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=696, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=23216, PETRI_PLACES=271, PETRI_TRANSITIONS=1131} [2024-10-11 20:00:03,236 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 246 predicate places. [2024-10-11 20:00:03,236 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 1131 transitions, 23216 flow [2024-10-11 20:00:03,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:03,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:03,236 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:03,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:03,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:03,437 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)] === [2024-10-11 20:00:03,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1514860904, now seen corresponding path program 8 times [2024-10-11 20:00:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:03,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337916048] [2024-10-11 20:00:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:03,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337916048] [2024-10-11 20:00:03,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337916048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007691003] [2024-10-11 20:00:03,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:03,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:03,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:03,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:03,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 20:00:03,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:03,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:03,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:00:03,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:03,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007691003] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:03,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:03,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 20:00:03,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355350093] [2024-10-11 20:00:03,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:03,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 20:00:03,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:03,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 20:00:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-10-11 20:00:03,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 20:00:03,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 1131 transitions, 23216 flow. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:03,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:03,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 20:00:03,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:05,680 INFO L124 PetriNetUnfolderBase]: 3173/5462 cut-off events. [2024-10-11 20:00:05,681 INFO L125 PetriNetUnfolderBase]: For 88624/88634 co-relation queries the response was YES. [2024-10-11 20:00:05,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49821 conditions, 5462 events. 3173/5462 cut-off events. For 88624/88634 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35025 event pairs, 116 based on Foata normal form. 44/5506 useless extension candidates. Maximal degree in co-relation 49161. Up to 1213 conditions per place. [2024-10-11 20:00:05,731 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 329 selfloop transitions, 1072 changer transitions 4/1467 dead transitions. [2024-10-11 20:00:05,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1467 transitions, 32415 flow [2024-10-11 20:00:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 20:00:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 20:00:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 253 transitions. [2024-10-11 20:00:05,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-11 20:00:05,734 INFO L175 Difference]: Start difference. First operand has 271 places, 1131 transitions, 23216 flow. Second operand 23 states and 253 transitions. [2024-10-11 20:00:05,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1467 transitions, 32415 flow [2024-10-11 20:00:06,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 1467 transitions, 32166 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:06,816 INFO L231 Difference]: Finished difference. Result has 298 places, 1378 transitions, 32649 flow [2024-10-11 20:00:06,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=22973, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=846, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=32649, PETRI_PLACES=298, PETRI_TRANSITIONS=1378} [2024-10-11 20:00:06,818 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 273 predicate places. [2024-10-11 20:00:06,818 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 1378 transitions, 32649 flow [2024-10-11 20:00:06,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:06,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:06,818 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:06,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:07,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 20:00:07,019 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)] === [2024-10-11 20:00:07,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:07,019 INFO L85 PathProgramCache]: Analyzing trace with hash 903812650, now seen corresponding path program 9 times [2024-10-11 20:00:07,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:07,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639014792] [2024-10-11 20:00:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:07,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639014792] [2024-10-11 20:00:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639014792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210007282] [2024-10-11 20:00:07,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:00:07,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:07,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:07,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:07,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 20:00:07,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 20:00:07,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:07,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:00:07,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:07,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210007282] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:07,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:07,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-10-11 20:00:07,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14247529] [2024-10-11 20:00:07,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:07,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 20:00:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:07,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 20:00:07,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 20:00:07,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 20:00:07,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1378 transitions, 32649 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:07,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:07,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 20:00:07,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:10,166 INFO L124 PetriNetUnfolderBase]: 3781/6456 cut-off events. [2024-10-11 20:00:10,166 INFO L125 PetriNetUnfolderBase]: For 141874/141890 co-relation queries the response was YES. [2024-10-11 20:00:10,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66575 conditions, 6456 events. 3781/6456 cut-off events. For 141874/141890 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 42544 event pairs, 158 based on Foata normal form. 40/6496 useless extension candidates. Maximal degree in co-relation 65567. Up to 1338 conditions per place. [2024-10-11 20:00:10,240 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 335 selfloop transitions, 1312 changer transitions 7/1716 dead transitions. [2024-10-11 20:00:10,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1716 transitions, 43478 flow [2024-10-11 20:00:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 20:00:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 20:00:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 246 transitions. [2024-10-11 20:00:10,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2024-10-11 20:00:10,242 INFO L175 Difference]: Start difference. First operand has 298 places, 1378 transitions, 32649 flow. Second operand 24 states and 246 transitions. [2024-10-11 20:00:10,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1716 transitions, 43478 flow [2024-10-11 20:00:12,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1716 transitions, 43227 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:12,358 INFO L231 Difference]: Finished difference. Result has 330 places, 1634 transitions, 43888 flow [2024-10-11 20:00:12,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=32326, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=43888, PETRI_PLACES=330, PETRI_TRANSITIONS=1634} [2024-10-11 20:00:12,359 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 305 predicate places. [2024-10-11 20:00:12,359 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 1634 transitions, 43888 flow [2024-10-11 20:00:12,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:12,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:12,360 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:12,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 20:00:12,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:12,561 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)] === [2024-10-11 20:00:12,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash -451413604, now seen corresponding path program 10 times [2024-10-11 20:00:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:12,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985741929] [2024-10-11 20:00:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985741929] [2024-10-11 20:00:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985741929] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138116907] [2024-10-11 20:00:12,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:00:12,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:12,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:12,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 20:00:12,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:00:12,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:12,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:00:12,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:12,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:12,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138116907] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:12,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:12,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-10-11 20:00:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71996819] [2024-10-11 20:00:12,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:12,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 20:00:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:12,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 20:00:12,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-11 20:00:12,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:00:12,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1634 transitions, 43888 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) [2024-10-11 20:00:12,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:12,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:00:12,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:18,312 INFO L124 PetriNetUnfolderBase]: 6182/10221 cut-off events. [2024-10-11 20:00:18,312 INFO L125 PetriNetUnfolderBase]: For 244946/244946 co-relation queries the response was YES. [2024-10-11 20:00:18,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115843 conditions, 10221 events. 6182/10221 cut-off events. For 244946/244946 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 67399 event pairs, 82 based on Foata normal form. 104/10325 useless extension candidates. Maximal degree in co-relation 115051. Up to 2179 conditions per place. [2024-10-11 20:00:18,436 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 760 selfloop transitions, 2085 changer transitions 24/2870 dead transitions. [2024-10-11 20:00:18,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 2870 transitions, 82199 flow [2024-10-11 20:00:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-11 20:00:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-11 20:00:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 450 transitions. [2024-10-11 20:00:18,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4162812210915819 [2024-10-11 20:00:18,438 INFO L175 Difference]: Start difference. First operand has 330 places, 1634 transitions, 43888 flow. Second operand 47 states and 450 transitions. [2024-10-11 20:00:18,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 2870 transitions, 82199 flow [2024-10-11 20:00:24,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 2870 transitions, 81172 flow, removed 407 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:24,636 INFO L231 Difference]: Finished difference. Result has 400 places, 2632 transitions, 79783 flow [2024-10-11 20:00:24,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=43160, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=79783, PETRI_PLACES=400, PETRI_TRANSITIONS=2632} [2024-10-11 20:00:24,638 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 375 predicate places. [2024-10-11 20:00:24,638 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 2632 transitions, 79783 flow [2024-10-11 20:00:24,638 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) [2024-10-11 20:00:24,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:24,638 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:24,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:24,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 20:00:24,841 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)] === [2024-10-11 20:00:24,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash -18666850, now seen corresponding path program 11 times [2024-10-11 20:00:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:24,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923617862] [2024-10-11 20:00:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:24,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:24,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923617862] [2024-10-11 20:00:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923617862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353616263] [2024-10-11 20:00:24,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:00:24,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:24,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:24,963 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:24,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 20:00:25,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 20:00:25,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:25,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:00:25,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:25,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353616263] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:25,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-10-11 20:00:25,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169284516] [2024-10-11 20:00:25,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:25,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 20:00:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 20:00:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-10-11 20:00:25,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 20:00:25,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 2632 transitions, 79783 flow. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:25,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:25,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 20:00:25,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:32,419 INFO L124 PetriNetUnfolderBase]: 6857/11635 cut-off events. [2024-10-11 20:00:32,419 INFO L125 PetriNetUnfolderBase]: For 376016/376085 co-relation queries the response was YES. [2024-10-11 20:00:32,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148314 conditions, 11635 events. 6857/11635 cut-off events. For 376016/376085 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 81028 event pairs, 596 based on Foata normal form. 100/11732 useless extension candidates. Maximal degree in co-relation 147836. Up to 4368 conditions per place. [2024-10-11 20:00:32,601 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1532 selfloop transitions, 1647 changer transitions 3/3293 dead transitions. [2024-10-11 20:00:32,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 3293 transitions, 105572 flow [2024-10-11 20:00:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 20:00:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 20:00:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 282 transitions. [2024-10-11 20:00:32,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45410628019323673 [2024-10-11 20:00:32,602 INFO L175 Difference]: Start difference. First operand has 400 places, 2632 transitions, 79783 flow. Second operand 27 states and 282 transitions. [2024-10-11 20:00:32,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 3293 transitions, 105572 flow [2024-10-11 20:00:44,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 3293 transitions, 104849 flow, removed 313 selfloop flow, removed 7 redundant places. [2024-10-11 20:00:44,657 INFO L231 Difference]: Finished difference. Result has 440 places, 3003 transitions, 97294 flow [2024-10-11 20:00:44,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=79058, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=97294, PETRI_PLACES=440, PETRI_TRANSITIONS=3003} [2024-10-11 20:00:44,660 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 415 predicate places. [2024-10-11 20:00:44,660 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 3003 transitions, 97294 flow [2024-10-11 20:00:44,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:44,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:44,660 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:44,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 20:00:44,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 20:00:44,861 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)] === [2024-10-11 20:00:44,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2125450970, now seen corresponding path program 12 times [2024-10-11 20:00:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137815318] [2024-10-11 20:00:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:44,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137815318] [2024-10-11 20:00:44,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137815318] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:44,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249587623] [2024-10-11 20:00:44,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 20:00:44,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:44,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:44,982 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:44,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 20:00:45,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 20:00:45,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:45,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:00:45,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:45,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:45,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249587623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:45,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:45,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-10-11 20:00:45,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979822792] [2024-10-11 20:00:45,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:45,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 20:00:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 20:00:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-10-11 20:00:45,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 20:00:45,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 3003 transitions, 97294 flow. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:45,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:45,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 20:00:45,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:53,962 INFO L124 PetriNetUnfolderBase]: 7238/12336 cut-off events. [2024-10-11 20:00:53,962 INFO L125 PetriNetUnfolderBase]: For 472714/472761 co-relation queries the response was YES. [2024-10-11 20:00:54,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166145 conditions, 12336 events. 7238/12336 cut-off events. For 472714/472761 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 87539 event pairs, 594 based on Foata normal form. 62/12392 useless extension candidates. Maximal degree in co-relation 165677. Up to 4552 conditions per place. [2024-10-11 20:00:54,141 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1360 selfloop transitions, 1814 changer transitions 2/3287 dead transitions. [2024-10-11 20:00:54,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 3287 transitions, 112054 flow [2024-10-11 20:00:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 20:00:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 20:00:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 254 transitions. [2024-10-11 20:00:54,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2024-10-11 20:00:54,142 INFO L175 Difference]: Start difference. First operand has 440 places, 3003 transitions, 97294 flow. Second operand 24 states and 254 transitions. [2024-10-11 20:00:54,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 3287 transitions, 112054 flow [2024-10-11 20:01:07,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 3287 transitions, 111635 flow, removed 171 selfloop flow, removed 4 redundant places. [2024-10-11 20:01:07,991 INFO L231 Difference]: Finished difference. Result has 467 places, 3148 transitions, 108699 flow [2024-10-11 20:01:07,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=96752, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=108699, PETRI_PLACES=467, PETRI_TRANSITIONS=3148} [2024-10-11 20:01:07,994 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 442 predicate places. [2024-10-11 20:01:07,994 INFO L471 AbstractCegarLoop]: Abstraction has has 467 places, 3148 transitions, 108699 flow [2024-10-11 20:01:07,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:07,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:07,994 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:08,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:08,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 20:01:08,200 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:08,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2006878916, now seen corresponding path program 13 times [2024-10-11 20:01:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367011088] [2024-10-11 20:01:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367011088] [2024-10-11 20:01:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367011088] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861925671] [2024-10-11 20:01:08,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 20:01:08,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:08,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:08,357 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:08,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 20:01:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:08,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:01:08,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:08,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861925671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:08,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-10-11 20:01:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948140004] [2024-10-11 20:01:08,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:08,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 20:01:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 20:01:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-11 20:01:08,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 20:01:08,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 3148 transitions, 108699 flow. Second operand has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:08,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:08,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 20:01:08,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:17,451 INFO L124 PetriNetUnfolderBase]: 7274/12384 cut-off events. [2024-10-11 20:01:17,452 INFO L125 PetriNetUnfolderBase]: For 552138/552181 co-relation queries the response was YES. [2024-10-11 20:01:17,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175810 conditions, 12384 events. 7274/12384 cut-off events. For 552138/552181 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 87794 event pairs, 1222 based on Foata normal form. 30/12411 useless extension candidates. Maximal degree in co-relation 174574. Up to 7345 conditions per place. [2024-10-11 20:01:17,641 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 1559 selfloop transitions, 1512 changer transitions 7/3189 dead transitions. [2024-10-11 20:01:17,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 3189 transitions, 115821 flow [2024-10-11 20:01:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 20:01:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 20:01:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-10-11 20:01:17,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.431438127090301 [2024-10-11 20:01:17,642 INFO L175 Difference]: Start difference. First operand has 467 places, 3148 transitions, 108699 flow. Second operand 13 states and 129 transitions. [2024-10-11 20:01:17,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 3189 transitions, 115821 flow