./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-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:00:49,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:00:49,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:00:49,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:00:49,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:00:49,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:00:49,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:00:49,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:00:49,307 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:00:49,307 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:00:49,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:00:49,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:00:49,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:00:49,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:00:49,309 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:00:49,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:00:49,310 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:00:49,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:00:49,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:00:49,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:00:49,311 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:00:49,312 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:00:49,312 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:00:49,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:00:49,313 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:00:49,313 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:00:49,313 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:00:49,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:00:49,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:00:49,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:00:49,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:00:49,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:00:49,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:00:49,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:00:49,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:00:49,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:00:49,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:00:49,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:00:49,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:00:49,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:00:49,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:00:49,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:00:49,318 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-10-11 20:00:49,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:00:49,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:00:49,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:00:49,583 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:00:49,586 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:00:49,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-10-11 20:00:50,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:00:51,147 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:00:51,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-10-11 20:00:51,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9d11998be/ddf412d714ca4696bf8db9efa69e97d1/FLAG8170be448 [2024-10-11 20:00:51,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9d11998be/ddf412d714ca4696bf8db9efa69e97d1 [2024-10-11 20:00:51,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:00:51,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:00:51,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:00:51,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:00:51,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:00:51,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed25a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51, skipping insertion in model container [2024-10-11 20:00:51,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:00:51,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:00:51,727 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:00:51,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:00:51,755 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:00:51,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51 WrapperNode [2024-10-11 20:00:51,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:00:51,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:00:51,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:00:51,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:00:51,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,780 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-10-11 20:00:51,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:00:51,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:00:51,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:00:51,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:00:51,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,805 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 20:00:51,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:00:51,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:00:51,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:00:51,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:00:51,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (1/1) ... [2024-10-11 20:00:51,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:00:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:51,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:00:51,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:00:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:00:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:00:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:00:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:00:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:00:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 20:00:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 20:00:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 20:00:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:00:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:00:51,978 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 20:00:52,049 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:00:52,051 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:00:52,163 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:00:52,163 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:00:52,270 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:00:52,270 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 20:00:52,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:00:52 BoogieIcfgContainer [2024-10-11 20:00:52,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:00:52,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:00:52,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:00:52,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:00:52,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:00:51" (1/3) ... [2024-10-11 20:00:52,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e9371c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:00:52, skipping insertion in model container [2024-10-11 20:00:52,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:51" (2/3) ... [2024-10-11 20:00:52,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e9371c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:00:52, skipping insertion in model container [2024-10-11 20:00:52,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:00:52" (3/3) ... [2024-10-11 20:00:52,278 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-10-11 20:00:52,291 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:00:52,292 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 20:00:52,292 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:00:52,338 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 20:00:52,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-10-11 20:00:52,395 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-10-11 20:00:52,396 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:00:52,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-10-11 20:00:52,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-10-11 20:00:52,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-10-11 20:00:52,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:00:52,412 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;@339e12e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:00:52,413 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 20:00:52,420 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:00:52,420 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-10-11 20:00:52,420 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:00:52,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:52,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:52,422 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:00:52,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1974399478, now seen corresponding path program 1 times [2024-10-11 20:00:52,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:52,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738719718] [2024-10-11 20:00:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:52,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:52,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738719718] [2024-10-11 20:00:52,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738719718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:52,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:52,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:00:52,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276927096] [2024-10-11 20:00:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:52,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:00:52,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:00:52,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:00:52,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-10-11 20:00:52,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:52,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:52,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-10-11 20:00:52,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:52,748 INFO L124 PetriNetUnfolderBase]: 61/123 cut-off events. [2024-10-11 20:00:52,748 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 20:00:52,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 123 events. 61/123 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 370 event pairs, 31 based on Foata normal form. 10/128 useless extension candidates. Maximal degree in co-relation 213. Up to 86 conditions per place. [2024-10-11 20:00:52,751 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-10-11 20:00:52,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 109 flow [2024-10-11 20:00:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:00:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:00:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-10-11 20:00:52,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-10-11 20:00:52,761 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 48 transitions. [2024-10-11 20:00:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 109 flow [2024-10-11 20:00:52,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:52,765 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-10-11 20:00:52,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-10-11 20:00:52,770 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-10-11 20:00:52,770 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-10-11 20:00:52,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:52,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:52,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:52,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 20:00:52,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:00:52,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1080039208, now seen corresponding path program 1 times [2024-10-11 20:00:52,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:52,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810321235] [2024-10-11 20:00:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:52,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810321235] [2024-10-11 20:00:52,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810321235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:52,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:52,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:00:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184088564] [2024-10-11 20:00:52,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:52,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:00:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:00:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:00:52,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-10-11 20:00:52,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:52,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:52,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-10-11 20:00:52,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:53,011 INFO L124 PetriNetUnfolderBase]: 89/174 cut-off events. [2024-10-11 20:00:53,011 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-10-11 20:00:53,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 174 events. 89/174 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 589 event pairs, 42 based on Foata normal form. 10/177 useless extension candidates. Maximal degree in co-relation 103. Up to 108 conditions per place. [2024-10-11 20:00:53,016 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-10-11 20:00:53,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 133 flow [2024-10-11 20:00:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:00:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:00:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-10-11 20:00:53,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-10-11 20:00:53,018 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 48 transitions. [2024-10-11 20:00:53,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 133 flow [2024-10-11 20:00:53,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:00:53,020 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-10-11 20:00:53,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-10-11 20:00:53,020 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-10-11 20:00:53,020 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-10-11 20:00:53,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:53,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:53,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:53,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 20:00:53,021 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:00:53,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 978789089, now seen corresponding path program 1 times [2024-10-11 20:00:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496255257] [2024-10-11 20:00:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:53,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:53,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496255257] [2024-10-11 20:00:53,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496255257] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:53,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371849249] [2024-10-11 20:00:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:53,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:53,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:53,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:53,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 20:00:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:53,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:00:53,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:53,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371849249] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:54,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 20:00:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109990255] [2024-10-11 20:00:54,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:54,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:00:54,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:54,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:00:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:00:54,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:00:54,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:54,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:54,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:00:54,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:55,459 INFO L124 PetriNetUnfolderBase]: 565/989 cut-off events. [2024-10-11 20:00:55,460 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-11 20:00:55,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 989 events. 565/989 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4577 event pairs, 13 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 881. Up to 211 conditions per place. [2024-10-11 20:00:55,466 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 123 selfloop transitions, 111 changer transitions 13/248 dead transitions. [2024-10-11 20:00:55,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 248 transitions, 1234 flow [2024-10-11 20:00:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-11 20:00:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-10-11 20:00:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 389 transitions. [2024-10-11 20:00:55,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4336677814938685 [2024-10-11 20:00:55,469 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 39 states and 389 transitions. [2024-10-11 20:00:55,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 248 transitions, 1234 flow [2024-10-11 20:00:55,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 248 transitions, 1220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:00:55,474 INFO L231 Difference]: Finished difference. Result has 78 places, 149 transitions, 912 flow [2024-10-11 20:00:55,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=912, PETRI_PLACES=78, PETRI_TRANSITIONS=149} [2024-10-11 20:00:55,475 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2024-10-11 20:00:55,475 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 149 transitions, 912 flow [2024-10-11 20:00:55,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:55,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:55,475 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:55,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 20:00:55,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:55,676 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:00:55,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1609550437, now seen corresponding path program 2 times [2024-10-11 20:00:55,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:55,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860503638] [2024-10-11 20:00:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:55,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860503638] [2024-10-11 20:00:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860503638] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433436497] [2024-10-11 20:00:55,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:55,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:55,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:55,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:55,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 20:00:55,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:55,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:55,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:00:55,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:56,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433436497] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:56,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:56,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 20:00:56,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191229822] [2024-10-11 20:00:56,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:56,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:00:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:00:56,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:00:56,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:00:56,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 149 transitions, 912 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:56,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:56,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:00:56,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:57,199 INFO L124 PetriNetUnfolderBase]: 643/1184 cut-off events. [2024-10-11 20:00:57,199 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-10-11 20:00:57,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 1184 events. 643/1184 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5763 event pairs, 31 based on Foata normal form. 3/1187 useless extension candidates. Maximal degree in co-relation 4630. Up to 359 conditions per place. [2024-10-11 20:00:57,207 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 130 selfloop transitions, 115 changer transitions 26/272 dead transitions. [2024-10-11 20:00:57,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 272 transitions, 2184 flow [2024-10-11 20:00:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 20:00:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 20:00:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2024-10-11 20:00:57,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4428341384863124 [2024-10-11 20:00:57,209 INFO L175 Difference]: Start difference. First operand has 78 places, 149 transitions, 912 flow. Second operand 27 states and 275 transitions. [2024-10-11 20:00:57,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 272 transitions, 2184 flow [2024-10-11 20:00:57,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 272 transitions, 2088 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-10-11 20:00:57,229 INFO L231 Difference]: Finished difference. Result has 109 places, 178 transitions, 1390 flow [2024-10-11 20:00:57,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1390, PETRI_PLACES=109, PETRI_TRANSITIONS=178} [2024-10-11 20:00:57,230 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 84 predicate places. [2024-10-11 20:00:57,230 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 178 transitions, 1390 flow [2024-10-11 20:00:57,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:57,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:57,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:57,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:57,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:57,435 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:00:57,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1294723099, now seen corresponding path program 3 times [2024-10-11 20:00:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895019713] [2024-10-11 20:00:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:57,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:57,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895019713] [2024-10-11 20:00:57,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895019713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:57,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557470913] [2024-10-11 20:00:57,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:00:57,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:57,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:57,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 20:00:57,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 20:00:57,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:57,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:00:57,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:57,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:58,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557470913] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:58,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:58,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 20:00:58,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195776354] [2024-10-11 20:00:58,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:58,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:00:58,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:58,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:00:58,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:00:58,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:00:58,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 178 transitions, 1390 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:58,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:58,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:00:58,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:59,092 INFO L124 PetriNetUnfolderBase]: 622/1141 cut-off events. [2024-10-11 20:00:59,093 INFO L125 PetriNetUnfolderBase]: For 4871/4871 co-relation queries the response was YES. [2024-10-11 20:00:59,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 1141 events. 622/1141 cut-off events. For 4871/4871 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5466 event pairs, 28 based on Foata normal form. 1/1142 useless extension candidates. Maximal degree in co-relation 5215. Up to 360 conditions per place. [2024-10-11 20:00:59,101 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 122 selfloop transitions, 124 changer transitions 15/262 dead transitions. [2024-10-11 20:00:59,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 262 transitions, 2458 flow [2024-10-11 20:00:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 20:00:59,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 20:00:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 297 transitions. [2024-10-11 20:00:59,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43043478260869567 [2024-10-11 20:00:59,103 INFO L175 Difference]: Start difference. First operand has 109 places, 178 transitions, 1390 flow. Second operand 30 states and 297 transitions. [2024-10-11 20:00:59,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 262 transitions, 2458 flow [2024-10-11 20:00:59,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 262 transitions, 2333 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-10-11 20:00:59,128 INFO L231 Difference]: Finished difference. Result has 130 places, 181 transitions, 1655 flow [2024-10-11 20:00:59,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1655, PETRI_PLACES=130, PETRI_TRANSITIONS=181} [2024-10-11 20:00:59,129 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 105 predicate places. [2024-10-11 20:00:59,130 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 181 transitions, 1655 flow [2024-10-11 20:00:59,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:59,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:59,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:59,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 20:00:59,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:59,335 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:00:59,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash -441805595, now seen corresponding path program 4 times [2024-10-11 20:00:59,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:00:59,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163901779] [2024-10-11 20:00:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:00:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:00:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163901779] [2024-10-11 20:00:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163901779] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:00:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139047917] [2024-10-11 20:00:59,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:00:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:00:59,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:59,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:00:59,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 20:00:59,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:00:59,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:59,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 20:00:59,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:59,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139047917] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:59,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:00:59,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-10-11 20:00:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97503099] [2024-10-11 20:00:59,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:59,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:00:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:00:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:00:59,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:01:00,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:00,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 181 transitions, 1655 flow. Second operand has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:00,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:00,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:00,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:01,122 INFO L124 PetriNetUnfolderBase]: 806/1456 cut-off events. [2024-10-11 20:01:01,122 INFO L125 PetriNetUnfolderBase]: For 6627/6627 co-relation queries the response was YES. [2024-10-11 20:01:01,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7383 conditions, 1456 events. 806/1456 cut-off events. For 6627/6627 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7375 event pairs, 27 based on Foata normal form. 3/1459 useless extension candidates. Maximal degree in co-relation 7290. Up to 318 conditions per place. [2024-10-11 20:01:01,140 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 157 selfloop transitions, 204 changer transitions 16/378 dead transitions. [2024-10-11 20:01:01,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 378 transitions, 4032 flow [2024-10-11 20:01:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 20:01:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-11 20:01:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 377 transitions. [2024-10-11 20:01:01,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44300822561692127 [2024-10-11 20:01:01,148 INFO L175 Difference]: Start difference. First operand has 130 places, 181 transitions, 1655 flow. Second operand 37 states and 377 transitions. [2024-10-11 20:01:01,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 378 transitions, 4032 flow [2024-10-11 20:01:01,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 378 transitions, 3711 flow, removed 44 selfloop flow, removed 21 redundant places. [2024-10-11 20:01:01,213 INFO L231 Difference]: Finished difference. Result has 155 places, 273 transitions, 2986 flow [2024-10-11 20:01:01,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2986, PETRI_PLACES=155, PETRI_TRANSITIONS=273} [2024-10-11 20:01:01,214 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 130 predicate places. [2024-10-11 20:01:01,215 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 273 transitions, 2986 flow [2024-10-11 20:01:01,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:01,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:01,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:01,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 20:01:01,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 20:01:01,421 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:01,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1126948333, now seen corresponding path program 5 times [2024-10-11 20:01:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625630683] [2024-10-11 20:01:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625630683] [2024-10-11 20:01:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625630683] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410108916] [2024-10-11 20:01:01,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:01:01,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:01,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:01,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 20:01:01,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 20:01:01,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:01,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:01:01,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:01,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410108916] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:01,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:01,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 20:01:01,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527640612] [2024-10-11 20:01:01,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:01,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:01:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:01:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:01:01,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-11 20:01:01,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 273 transitions, 2986 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:01,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:01,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-11 20:01:01,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:01,766 INFO L124 PetriNetUnfolderBase]: 722/1320 cut-off events. [2024-10-11 20:01:01,766 INFO L125 PetriNetUnfolderBase]: For 8934/8944 co-relation queries the response was YES. [2024-10-11 20:01:01,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 1320 events. 722/1320 cut-off events. For 8934/8944 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6575 event pairs, 26 based on Foata normal form. 27/1344 useless extension candidates. Maximal degree in co-relation 7442. Up to 663 conditions per place. [2024-10-11 20:01:01,776 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 163 selfloop transitions, 106 changer transitions 1/303 dead transitions. [2024-10-11 20:01:01,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 303 transitions, 3776 flow [2024-10-11 20:01:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:01:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:01:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-10-11 20:01:01,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-10-11 20:01:01,777 INFO L175 Difference]: Start difference. First operand has 155 places, 273 transitions, 2986 flow. Second operand 5 states and 59 transitions. [2024-10-11 20:01:01,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 303 transitions, 3776 flow [2024-10-11 20:01:01,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 303 transitions, 3492 flow, removed 83 selfloop flow, removed 12 redundant places. [2024-10-11 20:01:01,832 INFO L231 Difference]: Finished difference. Result has 143 places, 277 transitions, 3195 flow [2024-10-11 20:01:01,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3195, PETRI_PLACES=143, PETRI_TRANSITIONS=277} [2024-10-11 20:01:01,833 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 118 predicate places. [2024-10-11 20:01:01,833 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 277 transitions, 3195 flow [2024-10-11 20:01:01,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:01,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:01,833 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:01,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:02,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:02,034 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:02,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1781100175, now seen corresponding path program 6 times [2024-10-11 20:01:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:02,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569158695] [2024-10-11 20:01:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:02,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:02,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569158695] [2024-10-11 20:01:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569158695] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339565826] [2024-10-11 20:01:02,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 20:01:02,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:02,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:02,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:02,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 20:01:02,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 20:01:02,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:02,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:01:02,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:02,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339565826] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:02,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 20:01:02,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32288536] [2024-10-11 20:01:02,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:02,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:01:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:01:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:01:02,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:02,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 277 transitions, 3195 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:02,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:02,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:02,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:03,423 INFO L124 PetriNetUnfolderBase]: 1050/1867 cut-off events. [2024-10-11 20:01:03,423 INFO L125 PetriNetUnfolderBase]: For 11931/11931 co-relation queries the response was YES. [2024-10-11 20:01:03,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11078 conditions, 1867 events. 1050/1867 cut-off events. For 11931/11931 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9912 event pairs, 25 based on Foata normal form. 2/1853 useless extension candidates. Maximal degree in co-relation 10806. Up to 876 conditions per place. [2024-10-11 20:01:03,439 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 192 selfloop transitions, 227 changer transitions 22/442 dead transitions. [2024-10-11 20:01:03,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 442 transitions, 5819 flow [2024-10-11 20:01:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 20:01:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 20:01:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 204 transitions. [2024-10-11 20:01:03,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.422360248447205 [2024-10-11 20:01:03,440 INFO L175 Difference]: Start difference. First operand has 143 places, 277 transitions, 3195 flow. Second operand 21 states and 204 transitions. [2024-10-11 20:01:03,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 442 transitions, 5819 flow [2024-10-11 20:01:03,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 442 transitions, 5807 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-11 20:01:03,498 INFO L231 Difference]: Finished difference. Result has 176 places, 372 transitions, 5302 flow [2024-10-11 20:01:03,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5302, PETRI_PLACES=176, PETRI_TRANSITIONS=372} [2024-10-11 20:01:03,501 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 151 predicate places. [2024-10-11 20:01:03,501 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 372 transitions, 5302 flow [2024-10-11 20:01:03,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:03,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:03,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:03,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:03,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 20:01:03,703 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:03,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash -4479771, now seen corresponding path program 7 times [2024-10-11 20:01:03,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:03,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379659493] [2024-10-11 20:01:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:03,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379659493] [2024-10-11 20:01:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379659493] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:03,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107929121] [2024-10-11 20:01:03,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 20:01:03,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:03,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:03,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:03,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 20:01:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:03,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:01:03,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:04,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:04,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107929121] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:04,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:04,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 20:01:04,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640086018] [2024-10-11 20:01:04,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:04,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:01:04,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:04,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:01:04,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:01:04,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:04,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 372 transitions, 5302 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:04,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:04,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:04,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:05,236 INFO L124 PetriNetUnfolderBase]: 1102/1944 cut-off events. [2024-10-11 20:01:05,237 INFO L125 PetriNetUnfolderBase]: For 17665/17665 co-relation queries the response was YES. [2024-10-11 20:01:05,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13400 conditions, 1944 events. 1102/1944 cut-off events. For 17665/17665 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10256 event pairs, 22 based on Foata normal form. 1/1945 useless extension candidates. Maximal degree in co-relation 13281. Up to 938 conditions per place. [2024-10-11 20:01:05,257 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 213 selfloop transitions, 269 changer transitions 7/490 dead transitions. [2024-10-11 20:01:05,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 490 transitions, 7589 flow [2024-10-11 20:01:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 20:01:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 20:01:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 239 transitions. [2024-10-11 20:01:05,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3996655518394649 [2024-10-11 20:01:05,261 INFO L175 Difference]: Start difference. First operand has 176 places, 372 transitions, 5302 flow. Second operand 26 states and 239 transitions. [2024-10-11 20:01:05,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 490 transitions, 7589 flow [2024-10-11 20:01:05,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 490 transitions, 7516 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-11 20:01:05,336 INFO L231 Difference]: Finished difference. Result has 202 places, 437 transitions, 7250 flow [2024-10-11 20:01:05,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7250, PETRI_PLACES=202, PETRI_TRANSITIONS=437} [2024-10-11 20:01:05,337 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 177 predicate places. [2024-10-11 20:01:05,337 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 437 transitions, 7250 flow [2024-10-11 20:01:05,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:05,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:05,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:05,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 20:01:05,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:05,542 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:05,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash -301608987, now seen corresponding path program 8 times [2024-10-11 20:01:05,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:05,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182310431] [2024-10-11 20:01:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:05,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:05,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:05,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182310431] [2024-10-11 20:01:05,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182310431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:05,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345453380] [2024-10-11 20:01:05,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:01:05,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:05,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:05,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 20:01:05,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:01:05,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:05,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:01:05,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:05,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345453380] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:06,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 20:01:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20797041] [2024-10-11 20:01:06,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:06,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:01:06,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:06,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:01:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:01:06,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:06,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 437 transitions, 7250 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:06,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:06,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:06,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:07,059 INFO L124 PetriNetUnfolderBase]: 1141/2014 cut-off events. [2024-10-11 20:01:07,059 INFO L125 PetriNetUnfolderBase]: For 23987/23987 co-relation queries the response was YES. [2024-10-11 20:01:07,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15756 conditions, 2014 events. 1141/2014 cut-off events. For 23987/23987 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10638 event pairs, 26 based on Foata normal form. 2/2016 useless extension candidates. Maximal degree in co-relation 15640. Up to 933 conditions per place. [2024-10-11 20:01:07,074 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 236 selfloop transitions, 265 changer transitions 23/525 dead transitions. [2024-10-11 20:01:07,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 525 transitions, 9491 flow [2024-10-11 20:01:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 20:01:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 20:01:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 191 transitions. [2024-10-11 20:01:07,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43707093821510296 [2024-10-11 20:01:07,078 INFO L175 Difference]: Start difference. First operand has 202 places, 437 transitions, 7250 flow. Second operand 19 states and 191 transitions. [2024-10-11 20:01:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 525 transitions, 9491 flow [2024-10-11 20:01:07,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 525 transitions, 9312 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-10-11 20:01:07,216 INFO L231 Difference]: Finished difference. Result has 222 places, 460 transitions, 8514 flow [2024-10-11 20:01:07,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=7128, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8514, PETRI_PLACES=222, PETRI_TRANSITIONS=460} [2024-10-11 20:01:07,217 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 197 predicate places. [2024-10-11 20:01:07,217 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 460 transitions, 8514 flow [2024-10-11 20:01:07,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:07,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:07,217 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:07,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:07,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 20:01:07,422 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:07,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash 551308517, now seen corresponding path program 9 times [2024-10-11 20:01:07,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:07,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805012427] [2024-10-11 20:01:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:07,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805012427] [2024-10-11 20:01:07,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805012427] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64726387] [2024-10-11 20:01:07,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:01:07,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:07,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:07,591 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 20:01:07,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 20:01:07,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:07,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:01:07,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:07,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:08,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64726387] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:08,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:08,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 20:01:08,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959426438] [2024-10-11 20:01:08,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:08,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:01:08,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:08,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:01:08,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:01:08,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:08,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 460 transitions, 8514 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:08,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:08,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:08,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:09,469 INFO L124 PetriNetUnfolderBase]: 1197/2111 cut-off events. [2024-10-11 20:01:09,469 INFO L125 PetriNetUnfolderBase]: For 30433/30433 co-relation queries the response was YES. [2024-10-11 20:01:09,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17999 conditions, 2111 events. 1197/2111 cut-off events. For 30433/30433 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11242 event pairs, 23 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 17858. Up to 936 conditions per place. [2024-10-11 20:01:09,486 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 249 selfloop transitions, 336 changer transitions 13/599 dead transitions. [2024-10-11 20:01:09,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 599 transitions, 11692 flow [2024-10-11 20:01:09,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 20:01:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-11 20:01:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 295 transitions. [2024-10-11 20:01:09,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4008152173913043 [2024-10-11 20:01:09,488 INFO L175 Difference]: Start difference. First operand has 222 places, 460 transitions, 8514 flow. Second operand 32 states and 295 transitions. [2024-10-11 20:01:09,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 599 transitions, 11692 flow [2024-10-11 20:01:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 599 transitions, 11424 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-10-11 20:01:09,659 INFO L231 Difference]: Finished difference. Result has 249 places, 527 transitions, 10906 flow [2024-10-11 20:01:09,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=8328, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=10906, PETRI_PLACES=249, PETRI_TRANSITIONS=527} [2024-10-11 20:01:09,659 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 224 predicate places. [2024-10-11 20:01:09,660 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 527 transitions, 10906 flow [2024-10-11 20:01:09,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:09,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:09,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:09,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 20:01:09,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:09,860 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:09,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2040775869, now seen corresponding path program 10 times [2024-10-11 20:01:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009226231] [2024-10-11 20:01:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009226231] [2024-10-11 20:01:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009226231] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485351579] [2024-10-11 20:01:10,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:01:10,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:10,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:10,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:10,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 20:01:10,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:01:10,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:10,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:01:10,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:10,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:10,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485351579] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:10,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:10,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-10-11 20:01:10,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137414494] [2024-10-11 20:01:10,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:10,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:01:10,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:01:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:01:10,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:10,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 527 transitions, 10906 flow. Second operand has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:10,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:10,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:10,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:11,626 INFO L124 PetriNetUnfolderBase]: 1223/2157 cut-off events. [2024-10-11 20:01:11,626 INFO L125 PetriNetUnfolderBase]: For 36100/36100 co-relation queries the response was YES. [2024-10-11 20:01:11,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20022 conditions, 2157 events. 1223/2157 cut-off events. For 36100/36100 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11563 event pairs, 18 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 19885. Up to 1021 conditions per place. [2024-10-11 20:01:11,646 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 205 selfloop transitions, 394 changer transitions 4/604 dead transitions. [2024-10-11 20:01:11,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 604 transitions, 13204 flow [2024-10-11 20:01:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 20:01:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 20:01:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 208 transitions. [2024-10-11 20:01:11,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3931947069943289 [2024-10-11 20:01:11,648 INFO L175 Difference]: Start difference. First operand has 249 places, 527 transitions, 10906 flow. Second operand 23 states and 208 transitions. [2024-10-11 20:01:11,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 604 transitions, 13204 flow [2024-10-11 20:01:11,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 604 transitions, 12822 flow, removed 100 selfloop flow, removed 13 redundant places. [2024-10-11 20:01:11,902 INFO L231 Difference]: Finished difference. Result has 262 places, 560 transitions, 12795 flow [2024-10-11 20:01:11,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=10541, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=12795, PETRI_PLACES=262, PETRI_TRANSITIONS=560} [2024-10-11 20:01:11,903 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 237 predicate places. [2024-10-11 20:01:11,903 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 560 transitions, 12795 flow [2024-10-11 20:01:11,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:11,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:11,904 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:11,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:12,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 20:01:12,104 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:12,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:12,105 INFO L85 PathProgramCache]: Analyzing trace with hash 484265376, now seen corresponding path program 11 times [2024-10-11 20:01:12,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:12,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510983103] [2024-10-11 20:01:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:12,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:12,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510983103] [2024-10-11 20:01:12,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510983103] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088713651] [2024-10-11 20:01:12,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:01:12,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:12,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:12,307 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:12,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 20:01:12,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 20:01:12,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:12,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:01:12,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:12,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:12,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088713651] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:12,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:12,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-10-11 20:01:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446537701] [2024-10-11 20:01:12,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:12,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 20:01:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 20:01:12,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 20:01:12,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:12,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 560 transitions, 12795 flow. Second operand has 36 states, 36 states have (on average 5.611111111111111) internal successors, (202), 36 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:12,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:12,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:12,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:14,946 INFO L124 PetriNetUnfolderBase]: 1467/2618 cut-off events. [2024-10-11 20:01:14,947 INFO L125 PetriNetUnfolderBase]: For 56796/56796 co-relation queries the response was YES. [2024-10-11 20:01:14,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26959 conditions, 2618 events. 1467/2618 cut-off events. For 56796/56796 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14732 event pairs, 51 based on Foata normal form. 4/2622 useless extension candidates. Maximal degree in co-relation 26812. Up to 602 conditions per place. [2024-10-11 20:01:14,973 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 296 selfloop transitions, 474 changer transitions 56/827 dead transitions. [2024-10-11 20:01:14,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 827 transitions, 18977 flow [2024-10-11 20:01:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-11 20:01:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-10-11 20:01:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 498 transitions. [2024-10-11 20:01:14,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4085315832649713 [2024-10-11 20:01:14,975 INFO L175 Difference]: Start difference. First operand has 262 places, 560 transitions, 12795 flow. Second operand 53 states and 498 transitions. [2024-10-11 20:01:14,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 827 transitions, 18977 flow [2024-10-11 20:01:15,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 827 transitions, 18681 flow, removed 105 selfloop flow, removed 12 redundant places. [2024-10-11 20:01:15,405 INFO L231 Difference]: Finished difference. Result has 318 places, 673 transitions, 17082 flow [2024-10-11 20:01:15,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12571, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=17082, PETRI_PLACES=318, PETRI_TRANSITIONS=673} [2024-10-11 20:01:15,406 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 293 predicate places. [2024-10-11 20:01:15,406 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 673 transitions, 17082 flow [2024-10-11 20:01:15,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.611111111111111) internal successors, (202), 36 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:15,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:15,407 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:15,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 20:01:15,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 20:01:15,610 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:15,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:15,611 INFO L85 PathProgramCache]: Analyzing trace with hash 127477776, now seen corresponding path program 12 times [2024-10-11 20:01:15,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298875337] [2024-10-11 20:01:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298875337] [2024-10-11 20:01:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298875337] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377448234] [2024-10-11 20:01:15,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 20:01:15,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:15,908 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:15,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 20:01:15,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 20:01:15,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:15,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:01:15,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:16,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377448234] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:16,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:16,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-10-11 20:01:16,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738423722] [2024-10-11 20:01:16,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:16,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 20:01:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:16,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 20:01:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 20:01:16,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:16,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 673 transitions, 17082 flow. Second operand has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:16,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:16,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:16,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:20,396 INFO L124 PetriNetUnfolderBase]: 1989/3533 cut-off events. [2024-10-11 20:01:20,396 INFO L125 PetriNetUnfolderBase]: For 91265/91265 co-relation queries the response was YES. [2024-10-11 20:01:20,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39633 conditions, 3533 events. 1989/3533 cut-off events. For 91265/91265 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20685 event pairs, 34 based on Foata normal form. 5/3538 useless extension candidates. Maximal degree in co-relation 39538. Up to 939 conditions per place. [2024-10-11 20:01:20,431 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 365 selfloop transitions, 710 changer transitions 30/1106 dead transitions. [2024-10-11 20:01:20,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1106 transitions, 28062 flow [2024-10-11 20:01:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-10-11 20:01:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-10-11 20:01:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 724 transitions. [2024-10-11 20:01:20,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3984589983489268 [2024-10-11 20:01:20,433 INFO L175 Difference]: Start difference. First operand has 318 places, 673 transitions, 17082 flow. Second operand 79 states and 724 transitions. [2024-10-11 20:01:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1106 transitions, 28062 flow [2024-10-11 20:01:21,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1106 transitions, 27050 flow, removed 238 selfloop flow, removed 13 redundant places. [2024-10-11 20:01:21,232 INFO L231 Difference]: Finished difference. Result has 392 places, 928 transitions, 25511 flow [2024-10-11 20:01:21,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=16535, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=25511, PETRI_PLACES=392, PETRI_TRANSITIONS=928} [2024-10-11 20:01:21,234 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 367 predicate places. [2024-10-11 20:01:21,234 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 928 transitions, 25511 flow [2024-10-11 20:01:21,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:21,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:21,234 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:21,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 20:01:21,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 20:01:21,438 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 20:01:21,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 841867130, now seen corresponding path program 13 times [2024-10-11 20:01:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:21,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336962076] [2024-10-11 20:01:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:21,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336962076] [2024-10-11 20:01:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336962076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680677975] [2024-10-11 20:01:21,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 20:01:21,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:21,740 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:21,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 20:01:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:21,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:01:21,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:21,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:22,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680677975] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:22,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:22,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-10-11 20:01:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989555724] [2024-10-11 20:01:22,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:22,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 20:01:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 20:01:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 20:01:22,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:22,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 928 transitions, 25511 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:22,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:22,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:22,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:27,894 INFO L124 PetriNetUnfolderBase]: 2266/4048 cut-off events. [2024-10-11 20:01:27,895 INFO L125 PetriNetUnfolderBase]: For 121805/121805 co-relation queries the response was YES. [2024-10-11 20:01:27,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47306 conditions, 4048 events. 2266/4048 cut-off events. For 121805/121805 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24800 event pairs, 36 based on Foata normal form. 6/4054 useless extension candidates. Maximal degree in co-relation 46974. Up to 933 conditions per place. [2024-10-11 20:01:27,938 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 406 selfloop transitions, 854 changer transitions 32/1293 dead transitions. [2024-10-11 20:01:27,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1293 transitions, 34441 flow [2024-10-11 20:01:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-10-11 20:01:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2024-10-11 20:01:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 997 transitions. [2024-10-11 20:01:27,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836090804155444 [2024-10-11 20:01:27,941 INFO L175 Difference]: Start difference. First operand has 392 places, 928 transitions, 25511 flow. Second operand 113 states and 997 transitions. [2024-10-11 20:01:27,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1293 transitions, 34441 flow [2024-10-11 20:01:29,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1293 transitions, 33417 flow, removed 128 selfloop flow, removed 23 redundant places. [2024-10-11 20:01:29,382 INFO L231 Difference]: Finished difference. Result has 498 places, 1068 transitions, 30995 flow [2024-10-11 20:01:29,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=24656, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=732, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=30995, PETRI_PLACES=498, PETRI_TRANSITIONS=1068} [2024-10-11 20:01:29,384 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 473 predicate places. [2024-10-11 20:01:29,384 INFO L471 AbstractCegarLoop]: Abstraction has has 498 places, 1068 transitions, 30995 flow [2024-10-11 20:01:29,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:29,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:29,384 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:29,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:29,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:29,585 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)] === [2024-10-11 20:01:29,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash -214226062, now seen corresponding path program 14 times [2024-10-11 20:01:29,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:29,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734583363] [2024-10-11 20:01:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:29,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:29,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734583363] [2024-10-11 20:01:29,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734583363] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073036579] [2024-10-11 20:01:29,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:01:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:29,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:29,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 20:01:29,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:01:29,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:29,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:01:29,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:30,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:30,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073036579] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:30,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:30,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-10-11 20:01:30,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519776015] [2024-10-11 20:01:30,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:30,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 20:01:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 20:01:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 20:01:30,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:30,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 1068 transitions, 30995 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:30,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:30,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:30,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:34,964 INFO L124 PetriNetUnfolderBase]: 2768/4932 cut-off events. [2024-10-11 20:01:34,964 INFO L125 PetriNetUnfolderBase]: For 178609/178609 co-relation queries the response was YES. [2024-10-11 20:01:35,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62026 conditions, 4932 events. 2768/4932 cut-off events. For 178609/178609 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 31549 event pairs, 50 based on Foata normal form. 4/4936 useless extension candidates. Maximal degree in co-relation 61629. Up to 1455 conditions per place. [2024-10-11 20:01:35,027 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 479 selfloop transitions, 1020 changer transitions 27/1527 dead transitions. [2024-10-11 20:01:35,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1527 transitions, 44881 flow [2024-10-11 20:01:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-10-11 20:01:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-10-11 20:01:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 806 transitions. [2024-10-11 20:01:35,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4027986006996502 [2024-10-11 20:01:35,030 INFO L175 Difference]: Start difference. First operand has 498 places, 1068 transitions, 30995 flow. Second operand 87 states and 806 transitions. [2024-10-11 20:01:35,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1527 transitions, 44881 flow [2024-10-11 20:01:37,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1527 transitions, 43142 flow, removed 486 selfloop flow, removed 55 redundant places. [2024-10-11 20:01:37,433 INFO L231 Difference]: Finished difference. Result has 555 places, 1332 transitions, 41501 flow [2024-10-11 20:01:37,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=29814, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=764, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=41501, PETRI_PLACES=555, PETRI_TRANSITIONS=1332} [2024-10-11 20:01:37,435 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 530 predicate places. [2024-10-11 20:01:37,435 INFO L471 AbstractCegarLoop]: Abstraction has has 555 places, 1332 transitions, 41501 flow [2024-10-11 20:01:37,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:37,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:37,436 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:37,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:37,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 20:01:37,641 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)] === [2024-10-11 20:01:37,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash 564803600, now seen corresponding path program 15 times [2024-10-11 20:01:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:37,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414167246] [2024-10-11 20:01:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:37,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:37,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414167246] [2024-10-11 20:01:37,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414167246] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:37,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794832015] [2024-10-11 20:01:37,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:01:37,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:37,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:37,824 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:37,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 20:01:37,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 20:01:37,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:37,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:01:37,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:38,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:38,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794832015] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:38,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-10-11 20:01:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828555547] [2024-10-11 20:01:38,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:38,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 20:01:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 20:01:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 20:01:38,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:38,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1332 transitions, 41501 flow. Second operand has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:38,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:38,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:38,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:42,918 INFO L124 PetriNetUnfolderBase]: 3152/5610 cut-off events. [2024-10-11 20:01:42,918 INFO L125 PetriNetUnfolderBase]: For 240831/240831 co-relation queries the response was YES. [2024-10-11 20:01:42,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74924 conditions, 5610 events. 3152/5610 cut-off events. For 240831/240831 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36999 event pairs, 69 based on Foata normal form. 4/5614 useless extension candidates. Maximal degree in co-relation 74533. Up to 2469 conditions per place. [2024-10-11 20:01:42,995 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 619 selfloop transitions, 1018 changer transitions 25/1663 dead transitions. [2024-10-11 20:01:42,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 1663 transitions, 52653 flow [2024-10-11 20:01:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-10-11 20:01:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-10-11 20:01:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 633 transitions. [2024-10-11 20:01:42,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39316770186335404 [2024-10-11 20:01:42,999 INFO L175 Difference]: Start difference. First operand has 555 places, 1332 transitions, 41501 flow. Second operand 70 states and 633 transitions. [2024-10-11 20:01:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 1663 transitions, 52653 flow [2024-10-11 20:01:47,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 1663 transitions, 51832 flow, removed 261 selfloop flow, removed 21 redundant places. [2024-10-11 20:01:47,991 INFO L231 Difference]: Finished difference. Result has 633 places, 1516 transitions, 50831 flow [2024-10-11 20:01:47,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40754, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=835, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=50831, PETRI_PLACES=633, PETRI_TRANSITIONS=1516} [2024-10-11 20:01:47,993 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 608 predicate places. [2024-10-11 20:01:47,993 INFO L471 AbstractCegarLoop]: Abstraction has has 633 places, 1516 transitions, 50831 flow [2024-10-11 20:01:47,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:47,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:47,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:48,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 20:01:48,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 20:01:48,194 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)] === [2024-10-11 20:01:48,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash -27474382, now seen corresponding path program 16 times [2024-10-11 20:01:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:01:48,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419835878] [2024-10-11 20:01:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:48,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:01:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:48,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:01:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419835878] [2024-10-11 20:01:48,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419835878] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:01:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356712303] [2024-10-11 20:01:48,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:01:48,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:01:48,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:48,502 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:01:48,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 20:01:48,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:01:48,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:48,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:01:48,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:48,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:49,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356712303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:49,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:01:49,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-10-11 20:01:49,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624473778] [2024-10-11 20:01:49,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:49,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 20:01:49,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:01:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 20:01:49,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 20:01:49,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:01:49,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1516 transitions, 50831 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:49,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:49,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:01:49,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:55,381 INFO L124 PetriNetUnfolderBase]: 3743/6715 cut-off events. [2024-10-11 20:01:55,382 INFO L125 PetriNetUnfolderBase]: For 355412/355412 co-relation queries the response was YES. [2024-10-11 20:01:55,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94514 conditions, 6715 events. 3743/6715 cut-off events. For 355412/355412 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 46552 event pairs, 86 based on Foata normal form. 8/6723 useless extension candidates. Maximal degree in co-relation 94022. Up to 2797 conditions per place. [2024-10-11 20:01:55,500 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 617 selfloop transitions, 1353 changer transitions 20/1991 dead transitions. [2024-10-11 20:01:55,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 1991 transitions, 66385 flow [2024-10-11 20:01:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-10-11 20:01:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-10-11 20:01:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 748 transitions. [2024-10-11 20:01:55,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38716356107660455 [2024-10-11 20:01:55,502 INFO L175 Difference]: Start difference. First operand has 633 places, 1516 transitions, 50831 flow. Second operand 84 states and 748 transitions. [2024-10-11 20:01:55,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 1991 transitions, 66385 flow [2024-10-11 20:02:01,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 1991 transitions, 66058 flow, removed 84 selfloop flow, removed 18 redundant places. [2024-10-11 20:02:01,659 INFO L231 Difference]: Finished difference. Result has 729 places, 1819 transitions, 65635 flow [2024-10-11 20:02:01,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50615, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=65635, PETRI_PLACES=729, PETRI_TRANSITIONS=1819} [2024-10-11 20:02:01,661 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 704 predicate places. [2024-10-11 20:02:01,662 INFO L471 AbstractCegarLoop]: Abstraction has has 729 places, 1819 transitions, 65635 flow [2024-10-11 20:02:01,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:01,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:01,662 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:01,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 20:02:01,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 20:02:01,867 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)] === [2024-10-11 20:02:01,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:01,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1675408528, now seen corresponding path program 17 times [2024-10-11 20:02:01,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:02:01,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031751235] [2024-10-11 20:02:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:02:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:02,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:02:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031751235] [2024-10-11 20:02:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031751235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:02:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540968821] [2024-10-11 20:02:02,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:02:02,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:02:02,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:02:02,056 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:02:02,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 20:02:02,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 20:02:02,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:02,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:02:02,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:02,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:02,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540968821] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:02,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:02:02,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-10-11 20:02:02,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809838388] [2024-10-11 20:02:02,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:02,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 20:02:02,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:02:02,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 20:02:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 20:02:02,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:02:02,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 1819 transitions, 65635 flow. Second operand has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:02,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:02,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:02:02,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:08,450 INFO L124 PetriNetUnfolderBase]: 3770/6738 cut-off events. [2024-10-11 20:02:08,451 INFO L125 PetriNetUnfolderBase]: For 400632/400632 co-relation queries the response was YES. [2024-10-11 20:02:08,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101931 conditions, 6738 events. 3770/6738 cut-off events. For 400632/400632 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 46518 event pairs, 110 based on Foata normal form. 9/6747 useless extension candidates. Maximal degree in co-relation 101438. Up to 3538 conditions per place. [2024-10-11 20:02:08,558 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 704 selfloop transitions, 1227 changer transitions 19/1951 dead transitions. [2024-10-11 20:02:08,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 1951 transitions, 71390 flow [2024-10-11 20:02:08,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-11 20:02:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-11 20:02:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 417 transitions. [2024-10-11 20:02:08,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3941398865784499 [2024-10-11 20:02:08,563 INFO L175 Difference]: Start difference. First operand has 729 places, 1819 transitions, 65635 flow. Second operand 46 states and 417 transitions. [2024-10-11 20:02:08,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 1951 transitions, 71390 flow [2024-10-11 20:02:16,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 1951 transitions, 69959 flow, removed 574 selfloop flow, removed 25 redundant places. [2024-10-11 20:02:16,776 INFO L231 Difference]: Finished difference. Result has 753 places, 1840 transitions, 68748 flow [2024-10-11 20:02:16,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=64313, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=68748, PETRI_PLACES=753, PETRI_TRANSITIONS=1840} [2024-10-11 20:02:16,782 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 728 predicate places. [2024-10-11 20:02:16,782 INFO L471 AbstractCegarLoop]: Abstraction has has 753 places, 1840 transitions, 68748 flow [2024-10-11 20:02:16,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:16,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:16,786 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:16,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 20:02:16,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:02:16,987 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)] === [2024-10-11 20:02:16,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1417721104, now seen corresponding path program 18 times [2024-10-11 20:02:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:02:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562036281] [2024-10-11 20:02:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:02:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:17,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:02:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562036281] [2024-10-11 20:02:17,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562036281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:02:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260394253] [2024-10-11 20:02:17,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 20:02:17,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:02:17,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:02:17,289 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:02:17,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 20:02:17,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 20:02:17,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:17,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:02:17,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:17,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260394253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:18,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:02:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-10-11 20:02:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718919045] [2024-10-11 20:02:18,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:18,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 20:02:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:02:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 20:02:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 20:02:18,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-11 20:02:18,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 1840 transitions, 68748 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:18,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:18,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-11 20:02:18,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:25,750 INFO L124 PetriNetUnfolderBase]: 4070/7286 cut-off events. [2024-10-11 20:02:25,750 INFO L125 PetriNetUnfolderBase]: For 433219/433219 co-relation queries the response was YES. [2024-10-11 20:02:25,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113725 conditions, 7286 events. 4070/7286 cut-off events. For 433219/433219 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 51282 event pairs, 90 based on Foata normal form. 6/7292 useless extension candidates. Maximal degree in co-relation 113322. Up to 3033 conditions per place. [2024-10-11 20:02:25,886 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 747 selfloop transitions, 1408 changer transitions 18/2174 dead transitions. [2024-10-11 20:02:25,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 2174 transitions, 81999 flow [2024-10-11 20:02:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-10-11 20:02:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-10-11 20:02:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 746 transitions. [2024-10-11 20:02:25,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3955461293743372 [2024-10-11 20:02:25,893 INFO L175 Difference]: Start difference. First operand has 753 places, 1840 transitions, 68748 flow. Second operand 82 states and 746 transitions. [2024-10-11 20:02:25,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 2174 transitions, 81999 flow