./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-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:42:18,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:42:18,575 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:42:18,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:42:18,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:42:18,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:42:18,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:42:18,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:42:18,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:42:18,613 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:42:18,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:42:18,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:42:18,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:42:18,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:42:18,615 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:42:18,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:42:18,616 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:42:18,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:42:18,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:42:18,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:42:18,620 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:42:18,622 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:42:18,623 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:42:18,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:42:18,623 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:42:18,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:42:18,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:42:18,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:42:18,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:42:18,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:42:18,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:42:18,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:42:18,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:42:18,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:18,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:42:18,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:42:18,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:42:18,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:42:18,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:42:18,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:42:18,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:42:18,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:42:18,629 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce [2024-10-13 12:42:18,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:42:18,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:42:18,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:42:18,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:42:18,907 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:42:18,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-10-13 12:42:20,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:42:20,582 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:42:20,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-10-13 12:42:20,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812c515f8/02b5e53aa7c74de49fbc9f9f5c3b0c9c/FLAG0c769ae90 [2024-10-13 12:42:20,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812c515f8/02b5e53aa7c74de49fbc9f9f5c3b0c9c [2024-10-13 12:42:20,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:42:20,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:42:20,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:20,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:42:20,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:42:20,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:20,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ea9cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20, skipping insertion in model container [2024-10-13 12:42:20,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:20,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:20,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:20,895 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:42:20,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:20,970 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:42:20,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20 WrapperNode [2024-10-13 12:42:20,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:20,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:20,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:42:20,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:42:21,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,034 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 69 [2024-10-13 12:42:21,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:21,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:42:21,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:42:21,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:42:21,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,081 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]. [2024-10-13 12:42:21,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:42:21,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:42:21,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:42:21,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:42:21,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (1/1) ... [2024-10-13 12:42:21,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:21,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:42:21,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:42:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:42:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:42:21,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:42:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:42:21,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:42:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:42:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:42:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:42:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:42:21,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:42:21,224 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:42:21,324 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:42:21,327 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:42:21,481 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:42:21,481 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:42:21,588 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:42:21,588 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 12:42:21,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:21 BoogieIcfgContainer [2024-10-13 12:42:21,589 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:42:21,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:42:21,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:42:21,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:42:21,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:42:20" (1/3) ... [2024-10-13 12:42:21,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e470648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:21, skipping insertion in model container [2024-10-13 12:42:21,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:20" (2/3) ... [2024-10-13 12:42:21,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e470648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:21, skipping insertion in model container [2024-10-13 12:42:21,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:21" (3/3) ... [2024-10-13 12:42:21,598 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-10-13 12:42:21,616 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:42:21,617 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:42:21,617 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:42:21,661 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:42:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-10-13 12:42:21,736 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-13 12:42:21,737 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:42:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-13 12:42:21,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-10-13 12:42:21,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-10-13 12:42:21,757 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:42:21,766 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;@36f682ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:42:21,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:42:21,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:42:21,781 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-13 12:42:21,781 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:42:21,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:21,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:21,782 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)] === [2024-10-13 12:42:21,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:21,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1077077098, now seen corresponding path program 1 times [2024-10-13 12:42:21,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:21,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702244588] [2024-10-13 12:42:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:22,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:22,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702244588] [2024-10-13 12:42:22,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702244588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:22,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:22,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:22,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696852893] [2024-10-13 12:42:22,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:22,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:42:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:42:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:22,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-13 12:42:22,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:22,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:22,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-13 12:42:22,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:22,726 INFO L124 PetriNetUnfolderBase]: 77/173 cut-off events. [2024-10-13 12:42:22,727 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 12:42:22,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 173 events. 77/173 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 655 event pairs, 7 based on Foata normal form. 13/186 useless extension candidates. Maximal degree in co-relation 286. Up to 91 conditions per place. [2024-10-13 12:42:22,730 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 29 selfloop transitions, 4 changer transitions 9/45 dead transitions. [2024-10-13 12:42:22,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 210 flow [2024-10-13 12:42:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-10-13 12:42:22,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 12:42:22,747 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 7 states and 91 transitions. [2024-10-13 12:42:22,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 210 flow [2024-10-13 12:42:22,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:42:22,755 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 78 flow [2024-10-13 12:42:22,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2024-10-13 12:42:22,763 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-10-13 12:42:22,763 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 78 flow [2024-10-13 12:42:22,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:22,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:22,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:22,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:42:22,764 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)] === [2024-10-13 12:42:22,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash -602723234, now seen corresponding path program 2 times [2024-10-13 12:42:22,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:22,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310808722] [2024-10-13 12:42:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:22,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310808722] [2024-10-13 12:42:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310808722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848821670] [2024-10-13 12:42:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:22,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:42:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:42:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:23,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-13 12:42:23,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:23,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:23,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-13 12:42:23,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:23,141 INFO L124 PetriNetUnfolderBase]: 75/166 cut-off events. [2024-10-13 12:42:23,141 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-13 12:42:23,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 166 events. 75/166 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 573 event pairs, 21 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 444. Up to 93 conditions per place. [2024-10-13 12:42:23,143 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 8 changer transitions 6/45 dead transitions. [2024-10-13 12:42:23,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 252 flow [2024-10-13 12:42:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-10-13 12:42:23,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-10-13 12:42:23,145 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 78 flow. Second operand 7 states and 85 transitions. [2024-10-13 12:42:23,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 252 flow [2024-10-13 12:42:23,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 233 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 12:42:23,148 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 128 flow [2024-10-13 12:42:23,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-10-13 12:42:23,149 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-10-13 12:42:23,150 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 128 flow [2024-10-13 12:42:23,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:23,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:23,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:23,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:42:23,151 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)] === [2024-10-13 12:42:23,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash -522739498, now seen corresponding path program 3 times [2024-10-13 12:42:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91247795] [2024-10-13 12:42:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:23,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91247795] [2024-10-13 12:42:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91247795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:23,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:23,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547476317] [2024-10-13 12:42:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:23,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:42:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:42:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:23,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-13 12:42:23,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:23,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:23,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-13 12:42:23,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:23,555 INFO L124 PetriNetUnfolderBase]: 80/181 cut-off events. [2024-10-13 12:42:23,556 INFO L125 PetriNetUnfolderBase]: For 200/204 co-relation queries the response was YES. [2024-10-13 12:42:23,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 181 events. 80/181 cut-off events. For 200/204 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 679 event pairs, 23 based on Foata normal form. 5/186 useless extension candidates. Maximal degree in co-relation 530. Up to 95 conditions per place. [2024-10-13 12:42:23,558 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 27 selfloop transitions, 11 changer transitions 7/48 dead transitions. [2024-10-13 12:42:23,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 298 flow [2024-10-13 12:42:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-10-13 12:42:23,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:42:23,561 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 128 flow. Second operand 7 states and 84 transitions. [2024-10-13 12:42:23,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 298 flow [2024-10-13 12:42:23,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 288 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 12:42:23,563 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 183 flow [2024-10-13 12:42:23,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-10-13 12:42:23,566 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2024-10-13 12:42:23,566 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 183 flow [2024-10-13 12:42:23,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:23,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:23,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:23,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:42:23,567 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)] === [2024-10-13 12:42:23,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1836561498, now seen corresponding path program 4 times [2024-10-13 12:42:23,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930796273] [2024-10-13 12:42:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930796273] [2024-10-13 12:42:23,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930796273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735930358] [2024-10-13 12:42:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:23,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:42:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:42:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:23,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-13 12:42:23,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:23,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:23,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-13 12:42:23,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:23,854 INFO L124 PetriNetUnfolderBase]: 76/171 cut-off events. [2024-10-13 12:42:23,854 INFO L125 PetriNetUnfolderBase]: For 338/342 co-relation queries the response was YES. [2024-10-13 12:42:23,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 171 events. 76/171 cut-off events. For 338/342 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 615 event pairs, 25 based on Foata normal form. 5/175 useless extension candidates. Maximal degree in co-relation 562. Up to 95 conditions per place. [2024-10-13 12:42:23,856 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 25 selfloop transitions, 12 changer transitions 7/47 dead transitions. [2024-10-13 12:42:23,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 346 flow [2024-10-13 12:42:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-10-13 12:42:23,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-10-13 12:42:23,857 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 183 flow. Second operand 7 states and 82 transitions. [2024-10-13 12:42:23,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 346 flow [2024-10-13 12:42:23,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 312 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-13 12:42:23,860 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 214 flow [2024-10-13 12:42:23,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-10-13 12:42:23,861 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-10-13 12:42:23,861 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 214 flow [2024-10-13 12:42:23,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:23,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:23,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:23,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:42:23,861 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)] === [2024-10-13 12:42:23,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -390467458, now seen corresponding path program 5 times [2024-10-13 12:42:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:23,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788690974] [2024-10-13 12:42:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:24,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:24,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788690974] [2024-10-13 12:42:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788690974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:24,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:24,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:24,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212215074] [2024-10-13 12:42:24,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:24,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:42:24,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:42:24,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:24,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-13 12:42:24,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:24,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:24,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-13 12:42:24,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:24,142 INFO L124 PetriNetUnfolderBase]: 75/172 cut-off events. [2024-10-13 12:42:24,142 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-10-13 12:42:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 172 events. 75/172 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 21 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 571. Up to 97 conditions per place. [2024-10-13 12:42:24,144 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 13 changer transitions 4/48 dead transitions. [2024-10-13 12:42:24,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 360 flow [2024-10-13 12:42:24,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-10-13 12:42:24,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-10-13 12:42:24,147 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 214 flow. Second operand 7 states and 83 transitions. [2024-10-13 12:42:24,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 360 flow [2024-10-13 12:42:24,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 326 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 12:42:24,151 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 219 flow [2024-10-13 12:42:24,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-10-13 12:42:24,151 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-13 12:42:24,152 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 219 flow [2024-10-13 12:42:24,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:24,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:24,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:24,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:42:24,152 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)] === [2024-10-13 12:42:24,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1975089648, now seen corresponding path program 6 times [2024-10-13 12:42:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144015673] [2024-10-13 12:42:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:24,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144015673] [2024-10-13 12:42:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144015673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:24,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:24,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224525428] [2024-10-13 12:42:24,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:24,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:42:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:42:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:24,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-13 12:42:24,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:24,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:24,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-13 12:42:24,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:24,431 INFO L124 PetriNetUnfolderBase]: 74/162 cut-off events. [2024-10-13 12:42:24,431 INFO L125 PetriNetUnfolderBase]: For 330/334 co-relation queries the response was YES. [2024-10-13 12:42:24,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 162 events. 74/162 cut-off events. For 330/334 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 550 event pairs, 24 based on Foata normal form. 5/166 useless extension candidates. Maximal degree in co-relation 545. Up to 97 conditions per place. [2024-10-13 12:42:24,433 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 22 selfloop transitions, 13 changer transitions 6/44 dead transitions. [2024-10-13 12:42:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 338 flow [2024-10-13 12:42:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-10-13 12:42:24,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-10-13 12:42:24,434 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 219 flow. Second operand 7 states and 79 transitions. [2024-10-13 12:42:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 338 flow [2024-10-13 12:42:24,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 308 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-13 12:42:24,437 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 208 flow [2024-10-13 12:42:24,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2024-10-13 12:42:24,438 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-10-13 12:42:24,438 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 208 flow [2024-10-13 12:42:24,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:24,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:24,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:24,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:42:24,439 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)] === [2024-10-13 12:42:24,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1069131815, now seen corresponding path program 1 times [2024-10-13 12:42:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289914419] [2024-10-13 12:42:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:24,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289914419] [2024-10-13 12:42:24,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289914419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704904644] [2024-10-13 12:42:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:24,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:24,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:24,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:24,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:42:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:24,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:24,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:24,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:25,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704904644] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:25,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:25,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-13 12:42:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603762650] [2024-10-13 12:42:25,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:25,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 12:42:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 12:42:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:42:25,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:25,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 208 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:25,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:25,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:25,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:26,131 INFO L124 PetriNetUnfolderBase]: 363/692 cut-off events. [2024-10-13 12:42:26,131 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2024-10-13 12:42:26,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 692 events. 363/692 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3112 event pairs, 14 based on Foata normal form. 17/709 useless extension candidates. Maximal degree in co-relation 1888. Up to 167 conditions per place. [2024-10-13 12:42:26,135 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 129 selfloop transitions, 78 changer transitions 16/224 dead transitions. [2024-10-13 12:42:26,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 224 transitions, 1301 flow [2024-10-13 12:42:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-13 12:42:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-10-13 12:42:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 378 transitions. [2024-10-13 12:42:26,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-10-13 12:42:26,137 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 208 flow. Second operand 40 states and 378 transitions. [2024-10-13 12:42:26,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 224 transitions, 1301 flow [2024-10-13 12:42:26,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 224 transitions, 1226 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-10-13 12:42:26,164 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 649 flow [2024-10-13 12:42:26,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=649, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2024-10-13 12:42:26,165 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 57 predicate places. [2024-10-13 12:42:26,165 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 649 flow [2024-10-13 12:42:26,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:26,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:26,166 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:26,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:42:26,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:26,370 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)] === [2024-10-13 12:42:26,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash 683589629, now seen corresponding path program 2 times [2024-10-13 12:42:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:26,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211129240] [2024-10-13 12:42:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:26,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:26,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211129240] [2024-10-13 12:42:26,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211129240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:26,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903141107] [2024-10-13 12:42:26,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:42:26,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:26,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:26,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:26,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:42:26,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:26,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:26,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:26,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:26,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903141107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:26,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-13 12:42:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421598249] [2024-10-13 12:42:26,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:26,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 12:42:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 12:42:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:42:26,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:26,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 649 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:26,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:26,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:26,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:27,869 INFO L124 PetriNetUnfolderBase]: 465/885 cut-off events. [2024-10-13 12:42:27,870 INFO L125 PetriNetUnfolderBase]: For 1015/1015 co-relation queries the response was YES. [2024-10-13 12:42:27,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 885 events. 465/885 cut-off events. For 1015/1015 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4327 event pairs, 32 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 3042. Up to 393 conditions per place. [2024-10-13 12:42:27,876 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 115 selfloop transitions, 119 changer transitions 9/244 dead transitions. [2024-10-13 12:42:27,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 244 transitions, 1780 flow [2024-10-13 12:42:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-13 12:42:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-13 12:42:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 318 transitions. [2024-10-13 12:42:27,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-10-13 12:42:27,878 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 649 flow. Second operand 35 states and 318 transitions. [2024-10-13 12:42:27,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 244 transitions, 1780 flow [2024-10-13 12:42:27,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 244 transitions, 1560 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-10-13 12:42:27,889 INFO L231 Difference]: Finished difference. Result has 119 places, 159 transitions, 1154 flow [2024-10-13 12:42:27,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1154, PETRI_PLACES=119, PETRI_TRANSITIONS=159} [2024-10-13 12:42:27,890 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2024-10-13 12:42:27,890 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 159 transitions, 1154 flow [2024-10-13 12:42:27,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:27,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:27,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:27,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 12:42:28,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-13 12:42:28,092 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)] === [2024-10-13 12:42:28,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1546626681, now seen corresponding path program 3 times [2024-10-13 12:42:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077264269] [2024-10-13 12:42:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:28,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:28,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077264269] [2024-10-13 12:42:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077264269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:28,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684891703] [2024-10-13 12:42:28,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:42:28,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:28,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:28,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:28,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:42:28,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:42:28,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:28,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:28,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:28,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684891703] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:28,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:28,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-13 12:42:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235379305] [2024-10-13 12:42:28,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:28,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 12:42:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 12:42:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:42:28,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:28,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 159 transitions, 1154 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:28,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:28,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:28,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:30,495 INFO L124 PetriNetUnfolderBase]: 728/1389 cut-off events. [2024-10-13 12:42:30,495 INFO L125 PetriNetUnfolderBase]: For 2818/2818 co-relation queries the response was YES. [2024-10-13 12:42:30,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 1389 events. 728/1389 cut-off events. For 2818/2818 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7656 event pairs, 23 based on Foata normal form. 2/1389 useless extension candidates. Maximal degree in co-relation 5463. Up to 254 conditions per place. [2024-10-13 12:42:30,509 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 183 selfloop transitions, 242 changer transitions 11/437 dead transitions. [2024-10-13 12:42:30,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 437 transitions, 3540 flow [2024-10-13 12:42:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-13 12:42:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-10-13 12:42:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 573 transitions. [2024-10-13 12:42:30,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373046875 [2024-10-13 12:42:30,515 INFO L175 Difference]: Start difference. First operand has 119 places, 159 transitions, 1154 flow. Second operand 64 states and 573 transitions. [2024-10-13 12:42:30,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 437 transitions, 3540 flow [2024-10-13 12:42:30,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 437 transitions, 3463 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-13 12:42:30,546 INFO L231 Difference]: Finished difference. Result has 191 places, 280 transitions, 2653 flow [2024-10-13 12:42:30,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2653, PETRI_PLACES=191, PETRI_TRANSITIONS=280} [2024-10-13 12:42:30,549 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 165 predicate places. [2024-10-13 12:42:30,549 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 280 transitions, 2653 flow [2024-10-13 12:42:30,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:30,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:30,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:30,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 12:42:30,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:30,756 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)] === [2024-10-13 12:42:30,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1414354641, now seen corresponding path program 4 times [2024-10-13 12:42:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956182888] [2024-10-13 12:42:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:30,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:30,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956182888] [2024-10-13 12:42:30,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956182888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:30,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688835312] [2024-10-13 12:42:30,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:42:30,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:30,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:30,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:30,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:42:30,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:42:30,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:30,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:30,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:31,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:31,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688835312] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:31,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:31,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-13 12:42:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438447761] [2024-10-13 12:42:31,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:31,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 12:42:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 12:42:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:42:31,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:31,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 280 transitions, 2653 flow. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 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) [2024-10-13 12:42:31,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:31,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:31,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:33,610 INFO L124 PetriNetUnfolderBase]: 991/1844 cut-off events. [2024-10-13 12:42:33,610 INFO L125 PetriNetUnfolderBase]: For 14014/14014 co-relation queries the response was YES. [2024-10-13 12:42:33,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1844 events. 991/1844 cut-off events. For 14014/14014 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10422 event pairs, 23 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 9674. Up to 351 conditions per place. [2024-10-13 12:42:33,633 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 191 selfloop transitions, 335 changer transitions 10/537 dead transitions. [2024-10-13 12:42:33,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 537 transitions, 5695 flow [2024-10-13 12:42:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-13 12:42:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-10-13 12:42:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 587 transitions. [2024-10-13 12:42:33,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821614583333333 [2024-10-13 12:42:33,636 INFO L175 Difference]: Start difference. First operand has 191 places, 280 transitions, 2653 flow. Second operand 64 states and 587 transitions. [2024-10-13 12:42:33,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 537 transitions, 5695 flow [2024-10-13 12:42:33,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 537 transitions, 5393 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-10-13 12:42:33,717 INFO L231 Difference]: Finished difference. Result has 253 places, 383 transitions, 4167 flow [2024-10-13 12:42:33,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=4167, PETRI_PLACES=253, PETRI_TRANSITIONS=383} [2024-10-13 12:42:33,718 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-10-13 12:42:33,719 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 383 transitions, 4167 flow [2024-10-13 12:42:33,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 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) [2024-10-13 12:42:33,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:33,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:33,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 12:42:33,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:33,921 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)] === [2024-10-13 12:42:33,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1299253945, now seen corresponding path program 5 times [2024-10-13 12:42:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612467505] [2024-10-13 12:42:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612467505] [2024-10-13 12:42:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612467505] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039840252] [2024-10-13 12:42:34,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:42:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:34,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:34,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:34,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:42:34,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:34,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:34,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:34,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:34,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039840252] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:34,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:34,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-13 12:42:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781750] [2024-10-13 12:42:34,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:34,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 12:42:34,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:34,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 12:42:34,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:42:34,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:34,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 383 transitions, 4167 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:34,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:34,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:34,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:34,975 INFO L124 PetriNetUnfolderBase]: 1001/1870 cut-off events. [2024-10-13 12:42:34,975 INFO L125 PetriNetUnfolderBase]: For 17948/17948 co-relation queries the response was YES. [2024-10-13 12:42:34,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 1870 events. 1001/1870 cut-off events. For 17948/17948 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10660 event pairs, 74 based on Foata normal form. 2/1868 useless extension candidates. Maximal degree in co-relation 11154. Up to 1184 conditions per place. [2024-10-13 12:42:34,995 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 179 selfloop transitions, 246 changer transitions 8/434 dead transitions. [2024-10-13 12:42:34,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 434 transitions, 5400 flow [2024-10-13 12:42:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 12:42:34,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 12:42:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 166 transitions. [2024-10-13 12:42:34,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36403508771929827 [2024-10-13 12:42:34,997 INFO L175 Difference]: Start difference. First operand has 253 places, 383 transitions, 4167 flow. Second operand 19 states and 166 transitions. [2024-10-13 12:42:34,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 434 transitions, 5400 flow [2024-10-13 12:42:35,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 434 transitions, 5083 flow, removed 71 selfloop flow, removed 22 redundant places. [2024-10-13 12:42:35,077 INFO L231 Difference]: Finished difference. Result has 254 places, 395 transitions, 4857 flow [2024-10-13 12:42:35,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4857, PETRI_PLACES=254, PETRI_TRANSITIONS=395} [2024-10-13 12:42:35,079 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 228 predicate places. [2024-10-13 12:42:35,080 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 395 transitions, 4857 flow [2024-10-13 12:42:35,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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) [2024-10-13 12:42:35,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:35,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:35,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 12:42:35,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 12:42:35,282 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)] === [2024-10-13 12:42:35,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash -846916815, now seen corresponding path program 6 times [2024-10-13 12:42:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919112868] [2024-10-13 12:42:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:35,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:35,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919112868] [2024-10-13 12:42:35,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919112868] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:35,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925048668] [2024-10-13 12:42:35,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:42:35,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:35,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:35,404 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:35,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:42:35,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:42:35,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:35,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:35,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:35,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925048668] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:35,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:35,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727491512] [2024-10-13 12:42:35,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:35,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:35,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:35,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:35,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:35,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:35,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 395 transitions, 4857 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:35,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:35,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:35,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:36,366 INFO L124 PetriNetUnfolderBase]: 1016/1903 cut-off events. [2024-10-13 12:42:36,367 INFO L125 PetriNetUnfolderBase]: For 15500/15500 co-relation queries the response was YES. [2024-10-13 12:42:36,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12193 conditions, 1903 events. 1016/1903 cut-off events. For 15500/15500 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10854 event pairs, 86 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 12131. Up to 1240 conditions per place. [2024-10-13 12:42:36,386 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 189 selfloop transitions, 252 changer transitions 8/450 dead transitions. [2024-10-13 12:42:36,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 450 transitions, 6105 flow [2024-10-13 12:42:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 12:42:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 12:42:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 201 transitions. [2024-10-13 12:42:36,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-10-13 12:42:36,389 INFO L175 Difference]: Start difference. First operand has 254 places, 395 transitions, 4857 flow. Second operand 24 states and 201 transitions. [2024-10-13 12:42:36,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 450 transitions, 6105 flow [2024-10-13 12:42:36,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 450 transitions, 6037 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-13 12:42:36,458 INFO L231 Difference]: Finished difference. Result has 277 places, 406 transitions, 5766 flow [2024-10-13 12:42:36,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5766, PETRI_PLACES=277, PETRI_TRANSITIONS=406} [2024-10-13 12:42:36,459 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 251 predicate places. [2024-10-13 12:42:36,459 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 406 transitions, 5766 flow [2024-10-13 12:42:36,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:36,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:36,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:36,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 12:42:36,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:36,661 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)] === [2024-10-13 12:42:36,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:36,661 INFO L85 PathProgramCache]: Analyzing trace with hash -673669123, now seen corresponding path program 7 times [2024-10-13 12:42:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001273790] [2024-10-13 12:42:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:36,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001273790] [2024-10-13 12:42:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001273790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431562158] [2024-10-13 12:42:36,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:42:36,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:36,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:36,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:36,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 12:42:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:36,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:36,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:37,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:37,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431562158] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:37,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:37,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615908218] [2024-10-13 12:42:37,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:37,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:37,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:37,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:37,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:37,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 406 transitions, 5766 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:37,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:37,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:37,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:37,928 INFO L124 PetriNetUnfolderBase]: 1037/1958 cut-off events. [2024-10-13 12:42:37,928 INFO L125 PetriNetUnfolderBase]: For 19115/19115 co-relation queries the response was YES. [2024-10-13 12:42:37,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13647 conditions, 1958 events. 1037/1958 cut-off events. For 19115/19115 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11421 event pairs, 88 based on Foata normal form. 2/1960 useless extension candidates. Maximal degree in co-relation 13580. Up to 1317 conditions per place. [2024-10-13 12:42:37,962 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 193 selfloop transitions, 257 changer transitions 8/459 dead transitions. [2024-10-13 12:42:37,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 459 transitions, 7108 flow [2024-10-13 12:42:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 12:42:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 12:42:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 179 transitions. [2024-10-13 12:42:37,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3551587301587302 [2024-10-13 12:42:37,970 INFO L175 Difference]: Start difference. First operand has 277 places, 406 transitions, 5766 flow. Second operand 21 states and 179 transitions. [2024-10-13 12:42:37,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 459 transitions, 7108 flow [2024-10-13 12:42:38,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 459 transitions, 7040 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-13 12:42:38,142 INFO L231 Difference]: Finished difference. Result has 291 places, 422 transitions, 6934 flow [2024-10-13 12:42:38,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6934, PETRI_PLACES=291, PETRI_TRANSITIONS=422} [2024-10-13 12:42:38,143 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 265 predicate places. [2024-10-13 12:42:38,144 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 422 transitions, 6934 flow [2024-10-13 12:42:38,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:38,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:38,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:38,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 12:42:38,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:38,345 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)] === [2024-10-13 12:42:38,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash -85923801, now seen corresponding path program 8 times [2024-10-13 12:42:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000406973] [2024-10-13 12:42:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:38,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000406973] [2024-10-13 12:42:38,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000406973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974812164] [2024-10-13 12:42:38,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:42:38,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:38,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:38,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:38,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 12:42:38,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:38,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:38,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:38,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:38,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:38,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974812164] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:38,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:38,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:38,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560237910] [2024-10-13 12:42:38,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:38,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:38,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:38,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:38,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:38,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 422 transitions, 6934 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:38,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:38,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:38,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:39,601 INFO L124 PetriNetUnfolderBase]: 1043/1976 cut-off events. [2024-10-13 12:42:39,602 INFO L125 PetriNetUnfolderBase]: For 23640/23640 co-relation queries the response was YES. [2024-10-13 12:42:39,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15109 conditions, 1976 events. 1043/1976 cut-off events. For 23640/23640 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11559 event pairs, 89 based on Foata normal form. 2/1978 useless extension candidates. Maximal degree in co-relation 15037. Up to 1218 conditions per place. [2024-10-13 12:42:39,624 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 171 selfloop transitions, 293 changer transitions 8/473 dead transitions. [2024-10-13 12:42:39,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 473 transitions, 8217 flow [2024-10-13 12:42:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 12:42:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 12:42:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 218 transitions. [2024-10-13 12:42:39,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33641975308641975 [2024-10-13 12:42:39,626 INFO L175 Difference]: Start difference. First operand has 291 places, 422 transitions, 6934 flow. Second operand 27 states and 218 transitions. [2024-10-13 12:42:39,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 473 transitions, 8217 flow [2024-10-13 12:42:39,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 473 transitions, 8108 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-10-13 12:42:39,737 INFO L231 Difference]: Finished difference. Result has 309 places, 432 transitions, 7886 flow [2024-10-13 12:42:39,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6832, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7886, PETRI_PLACES=309, PETRI_TRANSITIONS=432} [2024-10-13 12:42:39,738 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 283 predicate places. [2024-10-13 12:42:39,738 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 432 transitions, 7886 flow [2024-10-13 12:42:39,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:39,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:39,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:39,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 12:42:39,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 12:42:39,943 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)] === [2024-10-13 12:42:39,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1694238983, now seen corresponding path program 9 times [2024-10-13 12:42:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:39,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470513474] [2024-10-13 12:42:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:40,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:40,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470513474] [2024-10-13 12:42:40,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470513474] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:40,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253311460] [2024-10-13 12:42:40,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:42:40,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:40,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:40,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:40,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 12:42:40,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:42:40,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:40,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:40,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:40,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:40,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253311460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:40,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704243248] [2024-10-13 12:42:40,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:40,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:40,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:40,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 432 transitions, 7886 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:40,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:40,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:40,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:40,870 INFO L124 PetriNetUnfolderBase]: 1048/1991 cut-off events. [2024-10-13 12:42:40,870 INFO L125 PetriNetUnfolderBase]: For 28746/28746 co-relation queries the response was YES. [2024-10-13 12:42:40,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16368 conditions, 1991 events. 1048/1991 cut-off events. For 28746/28746 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11723 event pairs, 89 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 16291. Up to 1228 conditions per place. [2024-10-13 12:42:40,890 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 194 selfloop transitions, 266 changer transitions 8/469 dead transitions. [2024-10-13 12:42:40,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 469 transitions, 9101 flow [2024-10-13 12:42:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 12:42:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 12:42:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 160 transitions. [2024-10-13 12:42:40,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3508771929824561 [2024-10-13 12:42:40,895 INFO L175 Difference]: Start difference. First operand has 309 places, 432 transitions, 7886 flow. Second operand 19 states and 160 transitions. [2024-10-13 12:42:40,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 469 transitions, 9101 flow [2024-10-13 12:42:41,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 469 transitions, 8868 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-10-13 12:42:41,097 INFO L231 Difference]: Finished difference. Result has 318 places, 437 transitions, 8621 flow [2024-10-13 12:42:41,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7653, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8621, PETRI_PLACES=318, PETRI_TRANSITIONS=437} [2024-10-13 12:42:41,099 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 292 predicate places. [2024-10-13 12:42:41,099 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 437 transitions, 8621 flow [2024-10-13 12:42:41,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:41,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:41,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:41,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 12:42:41,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 12:42:41,300 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:42:41,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash -259171493, now seen corresponding path program 10 times [2024-10-13 12:42:41,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75859598] [2024-10-13 12:42:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:41,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:41,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75859598] [2024-10-13 12:42:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75859598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800291388] [2024-10-13 12:42:41,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:42:41,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:41,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:41,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:41,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 12:42:41,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:42:41,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:41,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:41,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:41,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:41,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800291388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:41,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:41,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:41,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022202578] [2024-10-13 12:42:41,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:41,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:41,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:41,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:41,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 437 transitions, 8621 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:41,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:41,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:41,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:42,631 INFO L124 PetriNetUnfolderBase]: 1050/1995 cut-off events. [2024-10-13 12:42:42,631 INFO L125 PetriNetUnfolderBase]: For 36851/36851 co-relation queries the response was YES. [2024-10-13 12:42:42,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17372 conditions, 1995 events. 1050/1995 cut-off events. For 36851/36851 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11759 event pairs, 84 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 17290. Up to 1229 conditions per place. [2024-10-13 12:42:42,652 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 181 selfloop transitions, 293 changer transitions 4/479 dead transitions. [2024-10-13 12:42:42,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 479 transitions, 9825 flow [2024-10-13 12:42:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 12:42:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 12:42:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 215 transitions. [2024-10-13 12:42:42,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3317901234567901 [2024-10-13 12:42:42,653 INFO L175 Difference]: Start difference. First operand has 318 places, 437 transitions, 8621 flow. Second operand 27 states and 215 transitions. [2024-10-13 12:42:42,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 479 transitions, 9825 flow [2024-10-13 12:42:42,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 479 transitions, 9586 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-10-13 12:42:42,833 INFO L231 Difference]: Finished difference. Result has 334 places, 441 transitions, 9082 flow [2024-10-13 12:42:42,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8382, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9082, PETRI_PLACES=334, PETRI_TRANSITIONS=441} [2024-10-13 12:42:42,834 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2024-10-13 12:42:42,834 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 441 transitions, 9082 flow [2024-10-13 12:42:42,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:42,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:42,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:42,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 12:42:43,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 12:42:43,039 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:42:43,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash 614569187, now seen corresponding path program 11 times [2024-10-13 12:42:43,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:43,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269311517] [2024-10-13 12:42:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269311517] [2024-10-13 12:42:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269311517] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955270366] [2024-10-13 12:42:43,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:42:43,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:43,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:43,164 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:43,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 12:42:43,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:43,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:43,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:43,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:43,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:43,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955270366] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:43,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:43,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:43,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142170945] [2024-10-13 12:42:43,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:43,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:43,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:43,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:43,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 441 transitions, 9082 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:43,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:43,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:43,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:44,824 INFO L124 PetriNetUnfolderBase]: 1141/2171 cut-off events. [2024-10-13 12:42:44,824 INFO L125 PetriNetUnfolderBase]: For 42056/42056 co-relation queries the response was YES. [2024-10-13 12:42:44,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19433 conditions, 2171 events. 1141/2171 cut-off events. For 42056/42056 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13102 event pairs, 67 based on Foata normal form. 3/2174 useless extension candidates. Maximal degree in co-relation 19350. Up to 1054 conditions per place. [2024-10-13 12:42:44,841 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 199 selfloop transitions, 363 changer transitions 13/576 dead transitions. [2024-10-13 12:42:44,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 576 transitions, 11768 flow [2024-10-13 12:42:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-13 12:42:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-13 12:42:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 376 transitions. [2024-10-13 12:42:44,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-10-13 12:42:44,842 INFO L175 Difference]: Start difference. First operand has 334 places, 441 transitions, 9082 flow. Second operand 45 states and 376 transitions. [2024-10-13 12:42:44,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 576 transitions, 11768 flow [2024-10-13 12:42:44,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 576 transitions, 11578 flow, removed 17 selfloop flow, removed 21 redundant places. [2024-10-13 12:42:44,996 INFO L231 Difference]: Finished difference. Result has 370 places, 498 transitions, 11210 flow [2024-10-13 12:42:44,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8908, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11210, PETRI_PLACES=370, PETRI_TRANSITIONS=498} [2024-10-13 12:42:44,996 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 344 predicate places. [2024-10-13 12:42:44,997 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 498 transitions, 11210 flow [2024-10-13 12:42:44,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:44,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:44,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:45,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 12:42:45,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 12:42:45,198 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:42:45,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1962054403, now seen corresponding path program 12 times [2024-10-13 12:42:45,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392147634] [2024-10-13 12:42:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:45,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:45,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392147634] [2024-10-13 12:42:45,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392147634] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:45,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883821338] [2024-10-13 12:42:45,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:42:45,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:45,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:45,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:45,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 12:42:45,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:42:45,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:45,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:45,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:45,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:45,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883821338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:45,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:45,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:45,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549431601] [2024-10-13 12:42:45,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:45,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:45,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:45,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:45,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:45,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 498 transitions, 11210 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:45,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:45,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:47,694 INFO L124 PetriNetUnfolderBase]: 1239/2363 cut-off events. [2024-10-13 12:42:47,695 INFO L125 PetriNetUnfolderBase]: For 61814/61814 co-relation queries the response was YES. [2024-10-13 12:42:47,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23333 conditions, 2363 events. 1239/2363 cut-off events. For 61814/61814 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14620 event pairs, 68 based on Foata normal form. 3/2366 useless extension candidates. Maximal degree in co-relation 23237. Up to 902 conditions per place. [2024-10-13 12:42:47,716 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 204 selfloop transitions, 455 changer transitions 14/674 dead transitions. [2024-10-13 12:42:47,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 674 transitions, 14794 flow [2024-10-13 12:42:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-13 12:42:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-10-13 12:42:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 526 transitions. [2024-10-13 12:42:47,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3478835978835979 [2024-10-13 12:42:47,719 INFO L175 Difference]: Start difference. First operand has 370 places, 498 transitions, 11210 flow. Second operand 63 states and 526 transitions. [2024-10-13 12:42:47,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 674 transitions, 14794 flow [2024-10-13 12:42:47,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 674 transitions, 14380 flow, removed 189 selfloop flow, removed 13 redundant places. [2024-10-13 12:42:47,980 INFO L231 Difference]: Finished difference. Result has 424 places, 572 transitions, 13752 flow [2024-10-13 12:42:47,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10947, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=391, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=13752, PETRI_PLACES=424, PETRI_TRANSITIONS=572} [2024-10-13 12:42:47,981 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 398 predicate places. [2024-10-13 12:42:47,981 INFO L471 AbstractCegarLoop]: Abstraction has has 424 places, 572 transitions, 13752 flow [2024-10-13 12:42:47,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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) [2024-10-13 12:42:47,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:47,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:47,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 12:42:48,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 12:42:48,185 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:42:48,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:48,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2094326443, now seen corresponding path program 13 times [2024-10-13 12:42:48,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:48,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157495088] [2024-10-13 12:42:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:48,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:48,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:48,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157495088] [2024-10-13 12:42:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157495088] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:48,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534935789] [2024-10-13 12:42:48,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:42:48,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:48,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:48,393 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:48,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 12:42:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:48,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:42:48,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:48,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:48,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534935789] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:48,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:48,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 12:42:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35855131] [2024-10-13 12:42:48,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:48,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:42:48,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:42:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:42:48,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:48,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 572 transitions, 13752 flow. Second operand has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 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) [2024-10-13 12:42:48,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:48,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:48,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:50,663 INFO L124 PetriNetUnfolderBase]: 1469/2751 cut-off events. [2024-10-13 12:42:50,664 INFO L125 PetriNetUnfolderBase]: For 72187/72187 co-relation queries the response was YES. [2024-10-13 12:42:50,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28477 conditions, 2751 events. 1469/2751 cut-off events. For 72187/72187 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17192 event pairs, 75 based on Foata normal form. 4/2755 useless extension candidates. Maximal degree in co-relation 28252. Up to 991 conditions per place. [2024-10-13 12:42:50,693 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 277 selfloop transitions, 498 changer transitions 16/792 dead transitions. [2024-10-13 12:42:50,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 792 transitions, 18889 flow [2024-10-13 12:42:50,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-13 12:42:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-10-13 12:42:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 467 transitions. [2024-10-13 12:42:50,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37419871794871795 [2024-10-13 12:42:50,695 INFO L175 Difference]: Start difference. First operand has 424 places, 572 transitions, 13752 flow. Second operand 52 states and 467 transitions. [2024-10-13 12:42:50,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 792 transitions, 18889 flow [2024-10-13 12:42:51,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 792 transitions, 17838 flow, removed 387 selfloop flow, removed 31 redundant places. [2024-10-13 12:42:51,217 INFO L231 Difference]: Finished difference. Result has 451 places, 675 transitions, 17017 flow [2024-10-13 12:42:51,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12987, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=17017, PETRI_PLACES=451, PETRI_TRANSITIONS=675} [2024-10-13 12:42:51,218 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 425 predicate places. [2024-10-13 12:42:51,219 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 675 transitions, 17017 flow [2024-10-13 12:42:51,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 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) [2024-10-13 12:42:51,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:51,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:51,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 12:42:51,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:51,420 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:42:51,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1587791555, now seen corresponding path program 1 times [2024-10-13 12:42:51,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:51,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184884843] [2024-10-13 12:42:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:51,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:51,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184884843] [2024-10-13 12:42:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184884843] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895319416] [2024-10-13 12:42:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:51,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:51,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:51,647 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:51,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 12:42:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:51,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:42:51,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:51,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895319416] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:52,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:52,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-10-13 12:42:52,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596179279] [2024-10-13 12:42:52,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:52,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-13 12:42:52,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:52,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-13 12:42:52,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2024-10-13 12:42:52,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:52,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 675 transitions, 17017 flow. Second operand has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 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) [2024-10-13 12:42:52,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:52,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:52,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:53,361 INFO L124 PetriNetUnfolderBase]: 1467/2744 cut-off events. [2024-10-13 12:42:53,361 INFO L125 PetriNetUnfolderBase]: For 69355/69355 co-relation queries the response was YES. [2024-10-13 12:42:53,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28573 conditions, 2744 events. 1467/2744 cut-off events. For 69355/69355 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17099 event pairs, 89 based on Foata normal form. 2/2746 useless extension candidates. Maximal degree in co-relation 28351. Up to 920 conditions per place. [2024-10-13 12:42:53,391 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 302 selfloop transitions, 450 changer transitions 24/777 dead transitions. [2024-10-13 12:42:53,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 777 transitions, 19294 flow [2024-10-13 12:42:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-13 12:42:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-13 12:42:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 358 transitions. [2024-10-13 12:42:53,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3925438596491228 [2024-10-13 12:42:53,393 INFO L175 Difference]: Start difference. First operand has 451 places, 675 transitions, 17017 flow. Second operand 38 states and 358 transitions. [2024-10-13 12:42:53,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 777 transitions, 19294 flow [2024-10-13 12:42:53,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 777 transitions, 18654 flow, removed 179 selfloop flow, removed 22 redundant places. [2024-10-13 12:42:53,888 INFO L231 Difference]: Finished difference. Result has 467 places, 674 transitions, 17355 flow [2024-10-13 12:42:53,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16410, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17355, PETRI_PLACES=467, PETRI_TRANSITIONS=674} [2024-10-13 12:42:53,889 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 441 predicate places. [2024-10-13 12:42:53,889 INFO L471 AbstractCegarLoop]: Abstraction has has 467 places, 674 transitions, 17355 flow [2024-10-13 12:42:53,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 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) [2024-10-13 12:42:53,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:53,889 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:53,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 12:42:54,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:54,090 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:42:54,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1002734824, now seen corresponding path program 14 times [2024-10-13 12:42:54,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:54,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820994094] [2024-10-13 12:42:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:54,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:54,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820994094] [2024-10-13 12:42:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820994094] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425808511] [2024-10-13 12:42:54,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:42:54,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:54,245 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:54,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 12:42:54,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:54,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:54,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:42:54,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:54,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425808511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:54,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:54,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-13 12:42:54,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018905719] [2024-10-13 12:42:54,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:54,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 12:42:54,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:54,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 12:42:54,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-10-13 12:42:54,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:42:54,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 674 transitions, 17355 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-10-13 12:42:54,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:54,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:42:54,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:01,265 INFO L124 PetriNetUnfolderBase]: 3132/5806 cut-off events. [2024-10-13 12:43:01,266 INFO L125 PetriNetUnfolderBase]: For 169034/169034 co-relation queries the response was YES. [2024-10-13 12:43:01,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62654 conditions, 5806 events. 3132/5806 cut-off events. For 169034/169034 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 41603 event pairs, 107 based on Foata normal form. 91/5897 useless extension candidates. Maximal degree in co-relation 62420. Up to 1530 conditions per place. [2024-10-13 12:43:01,333 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 539 selfloop transitions, 1171 changer transitions 42/1753 dead transitions. [2024-10-13 12:43:01,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1753 transitions, 43318 flow [2024-10-13 12:43:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2024-10-13 12:43:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2024-10-13 12:43:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 1472 transitions. [2024-10-13 12:43:01,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717171717171717 [2024-10-13 12:43:01,338 INFO L175 Difference]: Start difference. First operand has 467 places, 674 transitions, 17355 flow. Second operand 165 states and 1472 transitions. [2024-10-13 12:43:01,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 1753 transitions, 43318 flow [2024-10-13 12:43:02,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 1753 transitions, 41386 flow, removed 126 selfloop flow, removed 37 redundant places. [2024-10-13 12:43:02,473 INFO L231 Difference]: Finished difference. Result has 647 places, 1373 transitions, 38821 flow [2024-10-13 12:43:02,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16427, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=535, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=165, PETRI_FLOW=38821, PETRI_PLACES=647, PETRI_TRANSITIONS=1373} [2024-10-13 12:43:02,475 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 621 predicate places. [2024-10-13 12:43:02,475 INFO L471 AbstractCegarLoop]: Abstraction has has 647 places, 1373 transitions, 38821 flow [2024-10-13 12:43:02,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-10-13 12:43:02,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:02,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:02,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 12:43:02,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:43:02,680 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:43:02,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1135006864, now seen corresponding path program 15 times [2024-10-13 12:43:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:43:02,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318745115] [2024-10-13 12:43:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:02,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:43:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:02,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:43:02,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318745115] [2024-10-13 12:43:02,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318745115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:43:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849691951] [2024-10-13 12:43:02,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:43:02,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:43:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:43:02,863 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:43:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 12:43:02,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:43:02,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:43:02,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:43:02,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:03,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:03,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849691951] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:03,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:43:03,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-13 12:43:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573110657] [2024-10-13 12:43:03,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:03,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 12:43:03,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:43:03,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 12:43:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-10-13 12:43:03,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:43:03,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1373 transitions, 38821 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 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) [2024-10-13 12:43:03,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:03,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:43:03,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:10,816 INFO L124 PetriNetUnfolderBase]: 4423/7986 cut-off events. [2024-10-13 12:43:10,817 INFO L125 PetriNetUnfolderBase]: For 391174/391174 co-relation queries the response was YES. [2024-10-13 12:43:10,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100761 conditions, 7986 events. 4423/7986 cut-off events. For 391174/391174 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 57076 event pairs, 104 based on Foata normal form. 16/8002 useless extension candidates. Maximal degree in co-relation 100595. Up to 2363 conditions per place. [2024-10-13 12:43:10,965 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 634 selfloop transitions, 1571 changer transitions 31/2237 dead transitions. [2024-10-13 12:43:10,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 2237 transitions, 63223 flow [2024-10-13 12:43:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-10-13 12:43:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2024-10-13 12:43:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 1243 transitions. [2024-10-13 12:43:10,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3865049751243781 [2024-10-13 12:43:10,968 INFO L175 Difference]: Start difference. First operand has 647 places, 1373 transitions, 38821 flow. Second operand 134 states and 1243 transitions. [2024-10-13 12:43:10,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 2237 transitions, 63223 flow [2024-10-13 12:43:15,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 747 places, 2237 transitions, 60756 flow, removed 1074 selfloop flow, removed 26 redundant places. [2024-10-13 12:43:15,525 INFO L231 Difference]: Finished difference. Result has 768 places, 1865 transitions, 55579 flow [2024-10-13 12:43:15,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=36811, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=134, PETRI_FLOW=55579, PETRI_PLACES=768, PETRI_TRANSITIONS=1865} [2024-10-13 12:43:15,527 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 742 predicate places. [2024-10-13 12:43:15,527 INFO L471 AbstractCegarLoop]: Abstraction has has 768 places, 1865 transitions, 55579 flow [2024-10-13 12:43:15,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 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) [2024-10-13 12:43:15,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:15,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:15,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 12:43:15,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 12:43:15,731 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:43:15,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2105414214, now seen corresponding path program 16 times [2024-10-13 12:43:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:43:15,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746866326] [2024-10-13 12:43:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:43:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:15,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:43:15,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746866326] [2024-10-13 12:43:15,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746866326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:43:15,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520496784] [2024-10-13 12:43:15,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:43:15,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:43:15,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:43:15,873 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:43:15,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 12:43:15,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:43:15,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:43:15,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:43:15,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:16,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:16,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520496784] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:16,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:43:16,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-13 12:43:16,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837502995] [2024-10-13 12:43:16,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:16,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 12:43:16,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:43:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 12:43:16,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-10-13 12:43:16,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:43:16,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 1865 transitions, 55579 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-10-13 12:43:16,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:16,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:43:16,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:22,920 INFO L124 PetriNetUnfolderBase]: 4857/8732 cut-off events. [2024-10-13 12:43:22,920 INFO L125 PetriNetUnfolderBase]: For 465757/465757 co-relation queries the response was YES. [2024-10-13 12:43:23,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115221 conditions, 8732 events. 4857/8732 cut-off events. For 465757/465757 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 63321 event pairs, 213 based on Foata normal form. 3/8735 useless extension candidates. Maximal degree in co-relation 115006. Up to 4820 conditions per place. [2024-10-13 12:43:23,272 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 844 selfloop transitions, 1363 changer transitions 13/2221 dead transitions. [2024-10-13 12:43:23,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 2221 transitions, 68730 flow [2024-10-13 12:43:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-10-13 12:43:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2024-10-13 12:43:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 582 transitions. [2024-10-13 12:43:23,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35144927536231885 [2024-10-13 12:43:23,278 INFO L175 Difference]: Start difference. First operand has 768 places, 1865 transitions, 55579 flow. Second operand 69 states and 582 transitions. [2024-10-13 12:43:23,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 824 places, 2221 transitions, 68730 flow [2024-10-13 12:43:29,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 2221 transitions, 67379 flow, removed 396 selfloop flow, removed 53 redundant places. [2024-10-13 12:43:29,110 INFO L231 Difference]: Finished difference. Result has 785 places, 2067 transitions, 64701 flow [2024-10-13 12:43:29,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54406, PETRI_DIFFERENCE_MINUEND_PLACES=703, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=64701, PETRI_PLACES=785, PETRI_TRANSITIONS=2067} [2024-10-13 12:43:29,112 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 759 predicate places. [2024-10-13 12:43:29,112 INFO L471 AbstractCegarLoop]: Abstraction has has 785 places, 2067 transitions, 64701 flow [2024-10-13 12:43:29,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-10-13 12:43:29,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:29,113 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:29,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 12:43:29,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:43:29,313 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:43:29,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash 917123002, now seen corresponding path program 17 times [2024-10-13 12:43:29,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:43:29,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680364627] [2024-10-13 12:43:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:29,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:43:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:29,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:43:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680364627] [2024-10-13 12:43:29,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680364627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:43:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92860731] [2024-10-13 12:43:29,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:43:29,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:43:29,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:43:29,554 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:43:29,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 12:43:29,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:43:29,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:43:29,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:43:29,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:29,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92860731] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:30,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:43:30,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-13 12:43:30,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750462806] [2024-10-13 12:43:30,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:30,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 12:43:30,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:43:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 12:43:30,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-10-13 12:43:30,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:43:30,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 785 places, 2067 transitions, 64701 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-10-13 12:43:30,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:30,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:43:30,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:40,602 INFO L124 PetriNetUnfolderBase]: 7138/12758 cut-off events. [2024-10-13 12:43:40,603 INFO L125 PetriNetUnfolderBase]: For 690491/690491 co-relation queries the response was YES. [2024-10-13 12:43:40,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173858 conditions, 12758 events. 7138/12758 cut-off events. For 690491/690491 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 99387 event pairs, 230 based on Foata normal form. 10/12768 useless extension candidates. Maximal degree in co-relation 173673. Up to 4325 conditions per place. [2024-10-13 12:43:40,804 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 971 selfloop transitions, 2391 changer transitions 30/3393 dead transitions. [2024-10-13 12:43:40,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 3393 transitions, 109521 flow [2024-10-13 12:43:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-10-13 12:43:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2024-10-13 12:43:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 1106 transitions. [2024-10-13 12:43:40,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3517811704834606 [2024-10-13 12:43:40,807 INFO L175 Difference]: Start difference. First operand has 785 places, 2067 transitions, 64701 flow. Second operand 131 states and 1106 transitions. [2024-10-13 12:43:40,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 3393 transitions, 109521 flow [2024-10-13 12:43:49,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 3393 transitions, 109380 flow, removed 24 selfloop flow, removed 16 redundant places. [2024-10-13 12:43:49,631 INFO L231 Difference]: Finished difference. Result has 950 places, 3105 transitions, 108397 flow [2024-10-13 12:43:49,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=64579, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=131, PETRI_FLOW=108397, PETRI_PLACES=950, PETRI_TRANSITIONS=3105} [2024-10-13 12:43:49,633 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 924 predicate places. [2024-10-13 12:43:49,633 INFO L471 AbstractCegarLoop]: Abstraction has has 950 places, 3105 transitions, 108397 flow [2024-10-13 12:43:49,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-10-13 12:43:49,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:49,634 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:49,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-13 12:43:49,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:43:49,834 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:43:49,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash 43382322, now seen corresponding path program 18 times [2024-10-13 12:43:49,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:43:49,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843672952] [2024-10-13 12:43:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:43:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:49,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:43:49,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843672952] [2024-10-13 12:43:49,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843672952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:43:49,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855767388] [2024-10-13 12:43:49,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:43:49,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:43:49,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:43:49,958 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:43:49,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 12:43:49,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 12:43:49,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:43:49,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:43:49,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:50,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:50,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855767388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:50,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:43:50,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-13 12:43:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865949409] [2024-10-13 12:43:50,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:50,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 12:43:50,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:43:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 12:43:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2024-10-13 12:43:50,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-13 12:43:50,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 3105 transitions, 108397 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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) [2024-10-13 12:43:50,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:50,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-13 12:43:50,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand