./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.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-figure1.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 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:57:33,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:57:33,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:57:33,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:57:33,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:57:33,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:57:33,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:57:33,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:57:33,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:57:33,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:57:33,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:57:33,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:57:33,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:57:33,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:57:33,906 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:57:33,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:57:33,908 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:57:33,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:57:33,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:57:33,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:57:33,909 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:57:33,909 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:57:33,910 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:57:33,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:57:33,910 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:57:33,910 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:57:33,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:57:33,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:57:33,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:57:33,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:57:33,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:57:33,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:57:33,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:57:33,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:33,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:57:33,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:57:33,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:57:33,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:57:33,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:57:33,914 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:57:33,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:57:33,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:57:33,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 [2024-10-11 19:57:34,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:57:34,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:57:34,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:57:34,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:57:34,177 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:57:34,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-11 19:57:35,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:57:35,795 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:57:35,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-11 19:57:35,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2a98f30a8/aa976acd380b4c83a3f4e94e1fba1b2d/FLAGd65fb593d [2024-10-11 19:57:36,195 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2a98f30a8/aa976acd380b4c83a3f4e94e1fba1b2d [2024-10-11 19:57:36,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:57:36,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:57:36,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:36,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:57:36,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:57:36,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3726e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36, skipping insertion in model container [2024-10-11 19:57:36,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:57:36,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:36,401 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:57:36,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:36,427 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:57:36,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36 WrapperNode [2024-10-11 19:57:36,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:36,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:57:36,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:57:36,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:57:36,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,455 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2024-10-11 19:57:36,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:57:36,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:57:36,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:57:36,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:57:36,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,477 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 19:57:36,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:57:36,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:57:36,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:57:36,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:57:36,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (1/1) ... [2024-10-11 19:57:36,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:36,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:36,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:57:36,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:57:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:57:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:57:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:57:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:57:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:57:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:57:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:57:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:57:36,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:57:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:57:36,563 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:57:36,634 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:57:36,635 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:57:36,741 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:57:36,741 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:57:36,822 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:57:36,822 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:57:36,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:57:36 BoogieIcfgContainer [2024-10-11 19:57:36,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:57:36,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:57:36,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:57:36,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:57:36,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:57:36" (1/3) ... [2024-10-11 19:57:36,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@818c690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:57:36, skipping insertion in model container [2024-10-11 19:57:36,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:36" (2/3) ... [2024-10-11 19:57:36,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@818c690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:57:36, skipping insertion in model container [2024-10-11 19:57:36,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:57:36" (3/3) ... [2024-10-11 19:57:36,830 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-10-11 19:57:36,843 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:57:36,844 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:57:36,844 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:57:36,883 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:57:36,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-10-11 19:57:36,935 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-11 19:57:36,936 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:57:36,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-11 19:57:36,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-10-11 19:57:36,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-10-11 19:57:36,954 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:57:36,963 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;@5b3e6e8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:57:36,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:57:36,975 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:57:36,978 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-11 19:57:36,978 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:57:36,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:36,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:36,980 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:36,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash 353442512, now seen corresponding path program 1 times [2024-10-11 19:57:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365448070] [2024-10-11 19:57:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:37,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365448070] [2024-10-11 19:57:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365448070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:57:37,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558129927] [2024-10-11 19:57:37,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:37,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:57:37,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:37,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:57:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:57:37,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-11 19:57:37,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:37,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:37,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-11 19:57:37,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:37,304 INFO L124 PetriNetUnfolderBase]: 76/157 cut-off events. [2024-10-11 19:57:37,304 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 19:57:37,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 157 events. 76/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 513 event pairs, 27 based on Foata normal form. 9/165 useless extension candidates. Maximal degree in co-relation 273. Up to 91 conditions per place. [2024-10-11 19:57:37,307 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-10-11 19:57:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2024-10-11 19:57:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:57:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:57:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-10-11 19:57:37,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-11 19:57:37,322 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 46 transitions. [2024-10-11 19:57:37,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2024-10-11 19:57:37,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:57:37,328 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-10-11 19:57:37,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-10-11 19:57:37,333 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-10-11 19:57:37,333 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-10-11 19:57:37,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:37,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:37,333 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:37,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:57:37,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:37,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1224174837, now seen corresponding path program 1 times [2024-10-11 19:57:37,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:37,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783680773] [2024-10-11 19:57:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:37,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:37,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783680773] [2024-10-11 19:57:37,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783680773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:37,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:37,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:37,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628988347] [2024-10-11 19:57:37,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:37,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:37,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 19:57:37,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:37,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:37,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 19:57:37,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:37,634 INFO L124 PetriNetUnfolderBase]: 132/252 cut-off events. [2024-10-11 19:57:37,634 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 19:57:37,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 252 events. 132/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 970 event pairs, 55 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 197. Up to 161 conditions per place. [2024-10-11 19:57:37,636 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 30 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-10-11 19:57:37,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 42 transitions, 191 flow [2024-10-11 19:57:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-11 19:57:37,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-11 19:57:37,638 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 66 transitions. [2024-10-11 19:57:37,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 42 transitions, 191 flow [2024-10-11 19:57:37,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 42 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:37,641 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2024-10-11 19:57:37,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-10-11 19:57:37,642 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-10-11 19:57:37,642 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2024-10-11 19:57:37,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:37,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:37,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:37,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:57:37,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:37,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1871034303, now seen corresponding path program 2 times [2024-10-11 19:57:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:37,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229545579] [2024-10-11 19:57:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:37,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:37,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229545579] [2024-10-11 19:57:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229545579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 19:57:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250404139] [2024-10-11 19:57:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:37,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:57:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:57:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:57:37,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 19:57:37,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:37,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:37,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 19:57:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:37,865 INFO L124 PetriNetUnfolderBase]: 150/287 cut-off events. [2024-10-11 19:57:37,866 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-10-11 19:57:37,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 287 events. 150/287 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1129 event pairs, 4 based on Foata normal form. 13/300 useless extension candidates. Maximal degree in co-relation 357. Up to 122 conditions per place. [2024-10-11 19:57:37,870 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 10 changer transitions 1/57 dead transitions. [2024-10-11 19:57:37,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 57 transitions, 331 flow [2024-10-11 19:57:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 19:57:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 19:57:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-10-11 19:57:37,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-10-11 19:57:37,872 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 7 states and 87 transitions. [2024-10-11 19:57:37,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 57 transitions, 331 flow [2024-10-11 19:57:37,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 329 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 19:57:37,876 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 186 flow [2024-10-11 19:57:37,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-10-11 19:57:37,879 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-10-11 19:57:37,879 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 186 flow [2024-10-11 19:57:37,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:37,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:37,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:37,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:57:37,880 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:37,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash -91052613, now seen corresponding path program 3 times [2024-10-11 19:57:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:37,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525349974] [2024-10-11 19:57:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:37,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525349974] [2024-10-11 19:57:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525349974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:37,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:37,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241693210] [2024-10-11 19:57:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:37,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:38,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 19:57:38,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:38,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:38,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 19:57:38,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:38,087 INFO L124 PetriNetUnfolderBase]: 197/374 cut-off events. [2024-10-11 19:57:38,087 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-10-11 19:57:38,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 374 events. 197/374 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1519 event pairs, 63 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 852. Up to 167 conditions per place. [2024-10-11 19:57:38,094 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 44 selfloop transitions, 10 changer transitions 2/58 dead transitions. [2024-10-11 19:57:38,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 433 flow [2024-10-11 19:57:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:38,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-11 19:57:38,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-11 19:57:38,095 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 186 flow. Second operand 5 states and 63 transitions. [2024-10-11 19:57:38,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 433 flow [2024-10-11 19:57:38,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:38,102 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 237 flow [2024-10-11 19:57:38,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2024-10-11 19:57:38,103 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-11 19:57:38,103 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 237 flow [2024-10-11 19:57:38,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:38,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:38,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:38,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:57:38,104 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:38,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash -572072187, now seen corresponding path program 4 times [2024-10-11 19:57:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232363434] [2024-10-11 19:57:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:38,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:38,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232363434] [2024-10-11 19:57:38,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232363434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:38,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662000891] [2024-10-11 19:57:38,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:57:38,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:38,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:38,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:38,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:57:38,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:57:38,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:38,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 19:57:38,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:38,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662000891] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:38,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:38,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 19:57:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632895726] [2024-10-11 19:57:38,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:38,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:57:38,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:57:38,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:57:38,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:38,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 237 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:38,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:38,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:38,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:38,737 INFO L124 PetriNetUnfolderBase]: 363/634 cut-off events. [2024-10-11 19:57:38,737 INFO L125 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2024-10-11 19:57:38,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 634 events. 363/634 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2649 event pairs, 20 based on Foata normal form. 13/647 useless extension candidates. Maximal degree in co-relation 1993. Up to 147 conditions per place. [2024-10-11 19:57:38,742 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 73 selfloop transitions, 40 changer transitions 1/115 dead transitions. [2024-10-11 19:57:38,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 115 transitions, 884 flow [2024-10-11 19:57:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:57:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:57:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 164 transitions. [2024-10-11 19:57:38,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-11 19:57:38,746 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 237 flow. Second operand 15 states and 164 transitions. [2024-10-11 19:57:38,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 115 transitions, 884 flow [2024-10-11 19:57:38,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 115 transitions, 846 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-11 19:57:38,755 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 556 flow [2024-10-11 19:57:38,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=556, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-10-11 19:57:38,758 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-10-11 19:57:38,758 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 556 flow [2024-10-11 19:57:38,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:38,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:38,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:38,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:57:38,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:38,959 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:38,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1841011263, now seen corresponding path program 5 times [2024-10-11 19:57:38,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:38,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756652016] [2024-10-11 19:57:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:38,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:39,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756652016] [2024-10-11 19:57:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756652016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150970290] [2024-10-11 19:57:39,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:57:39,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:39,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:39,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:39,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:57:39,112 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:57:39,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:39,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 19:57:39,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:39,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150970290] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:39,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:39,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 19:57:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196702091] [2024-10-11 19:57:39,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:39,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:57:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:57:39,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:57:39,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:39,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 556 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:39,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:39,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:39,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:39,436 INFO L124 PetriNetUnfolderBase]: 349/618 cut-off events. [2024-10-11 19:57:39,436 INFO L125 PetriNetUnfolderBase]: For 2847/2847 co-relation queries the response was YES. [2024-10-11 19:57:39,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 618 events. 349/618 cut-off events. For 2847/2847 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2632 event pairs, 57 based on Foata normal form. 13/631 useless extension candidates. Maximal degree in co-relation 2374. Up to 223 conditions per place. [2024-10-11 19:57:39,442 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 65 selfloop transitions, 37 changer transitions 1/104 dead transitions. [2024-10-11 19:57:39,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 1041 flow [2024-10-11 19:57:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:57:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:57:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-10-11 19:57:39,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-10-11 19:57:39,444 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 556 flow. Second operand 8 states and 97 transitions. [2024-10-11 19:57:39,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 1041 flow [2024-10-11 19:57:39,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 902 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-10-11 19:57:39,453 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 678 flow [2024-10-11 19:57:39,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=678, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-10-11 19:57:39,454 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-11 19:57:39,455 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 678 flow [2024-10-11 19:57:39,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:39,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:39,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:39,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:57:39,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:39,657 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:39,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:39,658 INFO L85 PathProgramCache]: Analyzing trace with hash 55239027, now seen corresponding path program 6 times [2024-10-11 19:57:39,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:39,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065663717] [2024-10-11 19:57:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:39,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065663717] [2024-10-11 19:57:39,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065663717] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:39,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:39,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:57:39,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85842864] [2024-10-11 19:57:39,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:39,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:57:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:57:39,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:57:39,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 19:57:39,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:39,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:39,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 19:57:39,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:39,809 INFO L124 PetriNetUnfolderBase]: 286/525 cut-off events. [2024-10-11 19:57:39,809 INFO L125 PetriNetUnfolderBase]: For 2539/2541 co-relation queries the response was YES. [2024-10-11 19:57:39,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 525 events. 286/525 cut-off events. For 2539/2541 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2226 event pairs, 81 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2112. Up to 266 conditions per place. [2024-10-11 19:57:39,813 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 48 selfloop transitions, 22 changer transitions 2/84 dead transitions. [2024-10-11 19:57:39,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 883 flow [2024-10-11 19:57:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:57:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:57:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-11 19:57:39,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:57:39,814 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 678 flow. Second operand 5 states and 60 transitions. [2024-10-11 19:57:39,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 883 flow [2024-10-11 19:57:39,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 814 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-10-11 19:57:39,821 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 647 flow [2024-10-11 19:57:39,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=647, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-10-11 19:57:39,823 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-11 19:57:39,823 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 647 flow [2024-10-11 19:57:39,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:39,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:39,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:39,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:57:39,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:57:39,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:39,824 INFO L85 PathProgramCache]: Analyzing trace with hash 575401179, now seen corresponding path program 1 times [2024-10-11 19:57:39,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:39,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026376968] [2024-10-11 19:57:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:39,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:39,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026376968] [2024-10-11 19:57:39,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026376968] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132713869] [2024-10-11 19:57:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:39,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:39,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:39,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:57:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:39,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:39,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:39,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:40,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132713869] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:40,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:40,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 5 [2024-10-11 19:57:40,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745966404] [2024-10-11 19:57:40,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:40,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:57:40,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:57:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:57:40,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-11 19:57:40,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:40,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:40,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-11 19:57:40,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:40,157 INFO L124 PetriNetUnfolderBase]: 446/869 cut-off events. [2024-10-11 19:57:40,157 INFO L125 PetriNetUnfolderBase]: For 4018/4031 co-relation queries the response was YES. [2024-10-11 19:57:40,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3592 conditions, 869 events. 446/869 cut-off events. For 4018/4031 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4396 event pairs, 69 based on Foata normal form. 18/882 useless extension candidates. Maximal degree in co-relation 2715. Up to 337 conditions per place. [2024-10-11 19:57:40,163 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 92 selfloop transitions, 5 changer transitions 15/130 dead transitions. [2024-10-11 19:57:40,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 130 transitions, 1407 flow [2024-10-11 19:57:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:57:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:57:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-11 19:57:40,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-11 19:57:40,165 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 647 flow. Second operand 4 states and 66 transitions. [2024-10-11 19:57:40,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 130 transitions, 1407 flow [2024-10-11 19:57:40,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 1315 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 19:57:40,174 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 632 flow [2024-10-11 19:57:40,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=632, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-10-11 19:57:40,175 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-10-11 19:57:40,176 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 632 flow [2024-10-11 19:57:40,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:40,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:40,176 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:40,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:40,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:40,381 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 19:57:40,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1582567342, now seen corresponding path program 2 times [2024-10-11 19:57:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:40,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112080018] [2024-10-11 19:57:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:40,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:40,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112080018] [2024-10-11 19:57:40,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112080018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:40,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474398494] [2024-10-11 19:57:40,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:57:40,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:40,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:40,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:40,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:57:40,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:57:40,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:40,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:40,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:40,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:57:40,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474398494] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:40,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:40,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 19:57:40,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035951185] [2024-10-11 19:57:40,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:40,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:57:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:57:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:57:40,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:40,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 632 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:40,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:40,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:40,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:41,096 INFO L124 PetriNetUnfolderBase]: 1147/1898 cut-off events. [2024-10-11 19:57:41,096 INFO L125 PetriNetUnfolderBase]: For 7040/7040 co-relation queries the response was YES. [2024-10-11 19:57:41,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8293 conditions, 1898 events. 1147/1898 cut-off events. For 7040/7040 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8737 event pairs, 48 based on Foata normal form. 56/1936 useless extension candidates. Maximal degree in co-relation 6496. Up to 373 conditions per place. [2024-10-11 19:57:41,109 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 134 selfloop transitions, 100 changer transitions 7/242 dead transitions. [2024-10-11 19:57:41,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 242 transitions, 2261 flow [2024-10-11 19:57:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 19:57:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 19:57:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2024-10-11 19:57:41,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45032051282051283 [2024-10-11 19:57:41,110 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 632 flow. Second operand 26 states and 281 transitions. [2024-10-11 19:57:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 242 transitions, 2261 flow [2024-10-11 19:57:41,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 242 transitions, 2213 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-10-11 19:57:41,123 INFO L231 Difference]: Finished difference. Result has 113 places, 126 transitions, 1447 flow [2024-10-11 19:57:41,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1447, PETRI_PLACES=113, PETRI_TRANSITIONS=126} [2024-10-11 19:57:41,124 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 87 predicate places. [2024-10-11 19:57:41,124 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 126 transitions, 1447 flow [2024-10-11 19:57:41,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:41,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:41,125 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:41,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 19:57:41,328 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,SelfDestructingSolverStorable8 [2024-10-11 19:57:41,329 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 19:57:41,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash 83493486, now seen corresponding path program 3 times [2024-10-11 19:57:41,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:41,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112693357] [2024-10-11 19:57:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:41,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112693357] [2024-10-11 19:57:41,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112693357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156645046] [2024-10-11 19:57:41,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:57:41,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:41,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:41,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:41,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:57:41,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 19:57:41,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:41,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:41,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:41,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156645046] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:41,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:41,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-11 19:57:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393878794] [2024-10-11 19:57:41,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:41,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:57:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:57:41,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:57:41,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:41,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 126 transitions, 1447 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:41,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:41,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:41,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:42,034 INFO L124 PetriNetUnfolderBase]: 1428/2369 cut-off events. [2024-10-11 19:57:42,034 INFO L125 PetriNetUnfolderBase]: For 23001/23001 co-relation queries the response was YES. [2024-10-11 19:57:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13776 conditions, 2369 events. 1428/2369 cut-off events. For 23001/23001 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11655 event pairs, 69 based on Foata normal form. 24/2393 useless extension candidates. Maximal degree in co-relation 12169. Up to 658 conditions per place. [2024-10-11 19:57:42,050 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 114 selfloop transitions, 125 changer transitions 20/260 dead transitions. [2024-10-11 19:57:42,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 260 transitions, 3259 flow [2024-10-11 19:57:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:57:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:57:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 162 transitions. [2024-10-11 19:57:42,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-11 19:57:42,052 INFO L175 Difference]: Start difference. First operand has 113 places, 126 transitions, 1447 flow. Second operand 15 states and 162 transitions. [2024-10-11 19:57:42,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 260 transitions, 3259 flow [2024-10-11 19:57:42,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 3062 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-10-11 19:57:42,094 INFO L231 Difference]: Finished difference. Result has 129 places, 177 transitions, 2340 flow [2024-10-11 19:57:42,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2340, PETRI_PLACES=129, PETRI_TRANSITIONS=177} [2024-10-11 19:57:42,097 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 103 predicate places. [2024-10-11 19:57:42,097 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 177 transitions, 2340 flow [2024-10-11 19:57:42,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:42,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:42,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:42,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 19:57:42,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 19:57:42,298 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 19:57:42,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:42,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2030137314, now seen corresponding path program 4 times [2024-10-11 19:57:42,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:42,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76860163] [2024-10-11 19:57:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:42,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:42,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:42,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76860163] [2024-10-11 19:57:42,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76860163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:42,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286695246] [2024-10-11 19:57:42,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:57:42,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:42,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:42,366 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:57:42,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:57:42,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:57:42,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:42,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:42,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:42,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:42,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286695246] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:42,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:42,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 19:57:42,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448758450] [2024-10-11 19:57:42,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:42,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:57:42,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:57:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:57:42,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:42,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 177 transitions, 2340 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:42,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:42,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:42,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:43,163 INFO L124 PetriNetUnfolderBase]: 1813/2993 cut-off events. [2024-10-11 19:57:43,163 INFO L125 PetriNetUnfolderBase]: For 44656/44656 co-relation queries the response was YES. [2024-10-11 19:57:43,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19712 conditions, 2993 events. 1813/2993 cut-off events. For 44656/44656 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15431 event pairs, 155 based on Foata normal form. 18/3011 useless extension candidates. Maximal degree in co-relation 17594. Up to 628 conditions per place. [2024-10-11 19:57:43,189 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 182 selfloop transitions, 116 changer transitions 3/302 dead transitions. [2024-10-11 19:57:43,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 302 transitions, 4411 flow [2024-10-11 19:57:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 19:57:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 19:57:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 186 transitions. [2024-10-11 19:57:43,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-10-11 19:57:43,191 INFO L175 Difference]: Start difference. First operand has 129 places, 177 transitions, 2340 flow. Second operand 17 states and 186 transitions. [2024-10-11 19:57:43,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 302 transitions, 4411 flow [2024-10-11 19:57:43,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 302 transitions, 4219 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-10-11 19:57:43,295 INFO L231 Difference]: Finished difference. Result has 148 places, 215 transitions, 3150 flow [2024-10-11 19:57:43,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3150, PETRI_PLACES=148, PETRI_TRANSITIONS=215} [2024-10-11 19:57:43,296 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 122 predicate places. [2024-10-11 19:57:43,296 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 215 transitions, 3150 flow [2024-10-11 19:57:43,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:43,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:43,296 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:43,309 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 19:57:43,497 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,SelfDestructingSolverStorable10 [2024-10-11 19:57:43,497 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 19:57:43,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1385965072, now seen corresponding path program 5 times [2024-10-11 19:57:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983653359] [2024-10-11 19:57:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983653359] [2024-10-11 19:57:43,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983653359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141026456] [2024-10-11 19:57:43,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:57:43,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:43,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:43,556 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 19:57:43,559 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 19:57:43,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 19:57:43,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:43,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:43,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:43,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:43,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141026456] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:43,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:43,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 19:57:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662915320] [2024-10-11 19:57:43,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:43,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:57:43,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:57:43,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:57:43,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:43,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 215 transitions, 3150 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:43,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:43,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:43,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:44,487 INFO L124 PetriNetUnfolderBase]: 2311/3823 cut-off events. [2024-10-11 19:57:44,487 INFO L125 PetriNetUnfolderBase]: For 73765/73765 co-relation queries the response was YES. [2024-10-11 19:57:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 3823 events. 2311/3823 cut-off events. For 73765/73765 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20725 event pairs, 86 based on Foata normal form. 71/3894 useless extension candidates. Maximal degree in co-relation 23762. Up to 1204 conditions per place. [2024-10-11 19:57:44,525 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 170 selfloop transitions, 197 changer transitions 2/370 dead transitions. [2024-10-11 19:57:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 370 transitions, 5641 flow [2024-10-11 19:57:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 19:57:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 19:57:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 180 transitions. [2024-10-11 19:57:44,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-11 19:57:44,526 INFO L175 Difference]: Start difference. First operand has 148 places, 215 transitions, 3150 flow. Second operand 16 states and 180 transitions. [2024-10-11 19:57:44,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 370 transitions, 5641 flow [2024-10-11 19:57:44,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 370 transitions, 5226 flow, removed 193 selfloop flow, removed 3 redundant places. [2024-10-11 19:57:44,795 INFO L231 Difference]: Finished difference. Result has 169 places, 276 transitions, 4477 flow [2024-10-11 19:57:44,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4477, PETRI_PLACES=169, PETRI_TRANSITIONS=276} [2024-10-11 19:57:44,796 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-10-11 19:57:44,796 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 276 transitions, 4477 flow [2024-10-11 19:57:44,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:44,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:44,796 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:44,808 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 19:57:45,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:45,001 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 19:57:45,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash -511635788, now seen corresponding path program 6 times [2024-10-11 19:57:45,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:45,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842434127] [2024-10-11 19:57:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:45,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842434127] [2024-10-11 19:57:45,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842434127] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540511456] [2024-10-11 19:57:45,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:57:45,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:45,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:45,112 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 19:57:45,113 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 19:57:45,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 19:57:45,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:45,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:45,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:45,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:45,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540511456] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:45,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 19:57:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333644880] [2024-10-11 19:57:45,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:45,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:57:45,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:57:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:57:45,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:45,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 276 transitions, 4477 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:45,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:45,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:45,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:46,152 INFO L124 PetriNetUnfolderBase]: 2658/4390 cut-off events. [2024-10-11 19:57:46,153 INFO L125 PetriNetUnfolderBase]: For 90766/90766 co-relation queries the response was YES. [2024-10-11 19:57:46,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31819 conditions, 4390 events. 2658/4390 cut-off events. For 90766/90766 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 24453 event pairs, 102 based on Foata normal form. 46/4436 useless extension candidates. Maximal degree in co-relation 31007. Up to 871 conditions per place. [2024-10-11 19:57:46,187 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 195 selfloop transitions, 252 changer transitions 2/450 dead transitions. [2024-10-11 19:57:46,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 450 transitions, 7383 flow [2024-10-11 19:57:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 19:57:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 19:57:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2024-10-11 19:57:46,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45032051282051283 [2024-10-11 19:57:46,193 INFO L175 Difference]: Start difference. First operand has 169 places, 276 transitions, 4477 flow. Second operand 26 states and 281 transitions. [2024-10-11 19:57:46,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 450 transitions, 7383 flow [2024-10-11 19:57:46,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 450 transitions, 7288 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-10-11 19:57:46,536 INFO L231 Difference]: Finished difference. Result has 204 places, 322 transitions, 6175 flow [2024-10-11 19:57:46,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6175, PETRI_PLACES=204, PETRI_TRANSITIONS=322} [2024-10-11 19:57:46,537 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-10-11 19:57:46,537 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 322 transitions, 6175 flow [2024-10-11 19:57:46,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:46,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:46,537 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:46,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 19:57:46,738 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,SelfDestructingSolverStorable12 [2024-10-11 19:57:46,738 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 19:57:46,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash 564075368, now seen corresponding path program 7 times [2024-10-11 19:57:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202923452] [2024-10-11 19:57:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202923452] [2024-10-11 19:57:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202923452] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615894184] [2024-10-11 19:57:46,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 19:57:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:46,841 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 19:57:46,845 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 19:57:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:46,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:46,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:46,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:46,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615894184] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:46,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:46,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 19:57:46,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440430702] [2024-10-11 19:57:46,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:46,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:57:46,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:57:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:57:46,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:46,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 322 transitions, 6175 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:46,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:46,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:46,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:47,874 INFO L124 PetriNetUnfolderBase]: 2664/4412 cut-off events. [2024-10-11 19:57:47,874 INFO L125 PetriNetUnfolderBase]: For 130009/130009 co-relation queries the response was YES. [2024-10-11 19:57:47,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35788 conditions, 4412 events. 2664/4412 cut-off events. For 130009/130009 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 24958 event pairs, 334 based on Foata normal form. 8/4420 useless extension candidates. Maximal degree in co-relation 34854. Up to 1052 conditions per place. [2024-10-11 19:57:47,916 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 234 selfloop transitions, 163 changer transitions 4/402 dead transitions. [2024-10-11 19:57:47,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 402 transitions, 7922 flow [2024-10-11 19:57:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:57:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:57:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-10-11 19:57:47,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-10-11 19:57:47,917 INFO L175 Difference]: Start difference. First operand has 204 places, 322 transitions, 6175 flow. Second operand 13 states and 154 transitions. [2024-10-11 19:57:47,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 402 transitions, 7922 flow [2024-10-11 19:57:48,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 402 transitions, 7475 flow, removed 116 selfloop flow, removed 14 redundant places. [2024-10-11 19:57:48,399 INFO L231 Difference]: Finished difference. Result has 202 places, 320 transitions, 6069 flow [2024-10-11 19:57:48,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6069, PETRI_PLACES=202, PETRI_TRANSITIONS=320} [2024-10-11 19:57:48,400 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-10-11 19:57:48,400 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 320 transitions, 6069 flow [2024-10-11 19:57:48,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:48,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:48,401 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:48,413 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 19:57:48,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:48,604 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 19:57:48,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash -822306354, now seen corresponding path program 8 times [2024-10-11 19:57:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:48,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302534418] [2024-10-11 19:57:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:48,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:48,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302534418] [2024-10-11 19:57:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302534418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:48,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076307177] [2024-10-11 19:57:48,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:57:48,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:48,658 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 19:57:48,659 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 19:57:48,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:57:48,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:48,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:48,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:48,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:48,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076307177] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:48,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:48,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 19:57:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369705085] [2024-10-11 19:57:48,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:48,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:57:48,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:48,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:57:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:57:48,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:48,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 320 transitions, 6069 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:48,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:48,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:48,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:49,769 INFO L124 PetriNetUnfolderBase]: 2908/4796 cut-off events. [2024-10-11 19:57:49,769 INFO L125 PetriNetUnfolderBase]: For 152503/152503 co-relation queries the response was YES. [2024-10-11 19:57:49,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39790 conditions, 4796 events. 2908/4796 cut-off events. For 152503/152503 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26979 event pairs, 169 based on Foata normal form. 54/4850 useless extension candidates. Maximal degree in co-relation 37853. Up to 931 conditions per place. [2024-10-11 19:57:49,817 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 172 selfloop transitions, 310 changer transitions 6/489 dead transitions. [2024-10-11 19:57:49,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 489 transitions, 9318 flow [2024-10-11 19:57:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 19:57:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 19:57:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 270 transitions. [2024-10-11 19:57:49,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-10-11 19:57:49,821 INFO L175 Difference]: Start difference. First operand has 202 places, 320 transitions, 6069 flow. Second operand 26 states and 270 transitions. [2024-10-11 19:57:49,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 489 transitions, 9318 flow [2024-10-11 19:57:50,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 489 transitions, 8939 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-10-11 19:57:50,452 INFO L231 Difference]: Finished difference. Result has 220 places, 380 transitions, 8019 flow [2024-10-11 19:57:50,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8019, PETRI_PLACES=220, PETRI_TRANSITIONS=380} [2024-10-11 19:57:50,454 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 194 predicate places. [2024-10-11 19:57:50,454 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 380 transitions, 8019 flow [2024-10-11 19:57:50,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:50,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:50,454 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:50,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 19:57:50,658 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,SelfDestructingSolverStorable14 [2024-10-11 19:57:50,659 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 19:57:50,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash -281848868, now seen corresponding path program 9 times [2024-10-11 19:57:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:50,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89299279] [2024-10-11 19:57:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:50,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:50,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89299279] [2024-10-11 19:57:50,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89299279] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:50,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822997541] [2024-10-11 19:57:50,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:57:50,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:50,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:50,731 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 19:57:50,734 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 19:57:50,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 19:57:50,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:50,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:50,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:50,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:50,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822997541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:50,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:50,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 19:57:50,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74962681] [2024-10-11 19:57:50,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:50,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:57:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:57:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:57:50,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:50,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 380 transitions, 8019 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:50,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:50,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:50,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:52,261 INFO L124 PetriNetUnfolderBase]: 3264/5430 cut-off events. [2024-10-11 19:57:52,261 INFO L125 PetriNetUnfolderBase]: For 195777/195777 co-relation queries the response was YES. [2024-10-11 19:57:52,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47741 conditions, 5430 events. 3264/5430 cut-off events. For 195777/195777 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 31826 event pairs, 157 based on Foata normal form. 30/5460 useless extension candidates. Maximal degree in co-relation 45020. Up to 1116 conditions per place. [2024-10-11 19:57:52,313 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 240 selfloop transitions, 330 changer transitions 6/577 dead transitions. [2024-10-11 19:57:52,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 577 transitions, 12021 flow [2024-10-11 19:57:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-11 19:57:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-11 19:57:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 304 transitions. [2024-10-11 19:57:52,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2024-10-11 19:57:52,315 INFO L175 Difference]: Start difference. First operand has 220 places, 380 transitions, 8019 flow. Second operand 29 states and 304 transitions. [2024-10-11 19:57:52,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 577 transitions, 12021 flow [2024-10-11 19:57:53,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 577 transitions, 11533 flow, removed 114 selfloop flow, removed 14 redundant places. [2024-10-11 19:57:53,358 INFO L231 Difference]: Finished difference. Result has 239 places, 429 transitions, 9703 flow [2024-10-11 19:57:53,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7588, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9703, PETRI_PLACES=239, PETRI_TRANSITIONS=429} [2024-10-11 19:57:53,359 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 213 predicate places. [2024-10-11 19:57:53,359 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 429 transitions, 9703 flow [2024-10-11 19:57:53,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:53,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:53,360 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:53,372 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 19:57:53,560 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,SelfDestructingSolverStorable15 [2024-10-11 19:57:53,561 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 19:57:53,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:53,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1052008316, now seen corresponding path program 10 times [2024-10-11 19:57:53,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:53,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501288001] [2024-10-11 19:57:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:53,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501288001] [2024-10-11 19:57:53,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501288001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226222689] [2024-10-11 19:57:53,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:57:53,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:53,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:53,634 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 19:57:53,635 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 19:57:53,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:57:53,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:53,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:53,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:53,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:53,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226222689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:53,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:53,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 19:57:53,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532707157] [2024-10-11 19:57:53,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:53,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:57:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:53,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:57:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:57:53,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:53,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 429 transitions, 9703 flow. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:53,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:53,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:53,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:55,009 INFO L124 PetriNetUnfolderBase]: 3694/6123 cut-off events. [2024-10-11 19:57:55,010 INFO L125 PetriNetUnfolderBase]: For 262108/262108 co-relation queries the response was YES. [2024-10-11 19:57:55,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55729 conditions, 6123 events. 3694/6123 cut-off events. For 262108/262108 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 36600 event pairs, 1307 based on Foata normal form. 18/6141 useless extension candidates. Maximal degree in co-relation 53471. Up to 4660 conditions per place. [2024-10-11 19:57:55,070 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 471 selfloop transitions, 72 changer transitions 2/546 dead transitions. [2024-10-11 19:57:55,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 546 transitions, 12514 flow [2024-10-11 19:57:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 19:57:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 19:57:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-10-11 19:57:55,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-10-11 19:57:55,071 INFO L175 Difference]: Start difference. First operand has 239 places, 429 transitions, 9703 flow. Second operand 16 states and 173 transitions. [2024-10-11 19:57:55,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 546 transitions, 12514 flow [2024-10-11 19:57:56,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 546 transitions, 11999 flow, removed 46 selfloop flow, removed 14 redundant places. [2024-10-11 19:57:56,521 INFO L231 Difference]: Finished difference. Result has 246 places, 462 transitions, 10163 flow [2024-10-11 19:57:56,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9248, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10163, PETRI_PLACES=246, PETRI_TRANSITIONS=462} [2024-10-11 19:57:56,522 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 220 predicate places. [2024-10-11 19:57:56,522 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 462 transitions, 10163 flow [2024-10-11 19:57:56,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:56,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:56,523 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:56,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:56,723 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,SelfDestructingSolverStorable16 [2024-10-11 19:57:56,724 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 19:57:56,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1699324732, now seen corresponding path program 11 times [2024-10-11 19:57:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:57:56,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090403480] [2024-10-11 19:57:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:57:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:57:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090403480] [2024-10-11 19:57:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090403480] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:57:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604026753] [2024-10-11 19:57:56,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:57:56,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:57:56,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:56,786 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 19:57:56,793 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 19:57:56,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 19:57:56,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:56,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:57:56,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:56,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:56,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604026753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:56,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:57:56,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 19:57:56,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507890004] [2024-10-11 19:57:56,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:56,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:57:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:57:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:57:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:57:56,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:57:56,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 462 transitions, 10163 flow. Second operand has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:56,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:56,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:57:56,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:58,818 INFO L124 PetriNetUnfolderBase]: 4052/6692 cut-off events. [2024-10-11 19:57:58,818 INFO L125 PetriNetUnfolderBase]: For 320135/320135 co-relation queries the response was YES. [2024-10-11 19:57:58,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61976 conditions, 6692 events. 4052/6692 cut-off events. For 320135/320135 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40325 event pairs, 633 based on Foata normal form. 84/6776 useless extension candidates. Maximal degree in co-relation 59745. Up to 2935 conditions per place. [2024-10-11 19:57:58,882 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 357 selfloop transitions, 252 changer transitions 3/613 dead transitions. [2024-10-11 19:57:58,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 613 transitions, 13774 flow [2024-10-11 19:57:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 19:57:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 19:57:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 224 transitions. [2024-10-11 19:57:58,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-11 19:57:58,883 INFO L175 Difference]: Start difference. First operand has 246 places, 462 transitions, 10163 flow. Second operand 20 states and 224 transitions. [2024-10-11 19:57:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 613 transitions, 13774 flow [2024-10-11 19:58:00,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 613 transitions, 13449 flow, removed 130 selfloop flow, removed 6 redundant places. [2024-10-11 19:58:00,630 INFO L231 Difference]: Finished difference. Result has 271 places, 496 transitions, 11838 flow [2024-10-11 19:58:00,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9861, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11838, PETRI_PLACES=271, PETRI_TRANSITIONS=496} [2024-10-11 19:58:00,632 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-10-11 19:58:00,632 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 496 transitions, 11838 flow [2024-10-11 19:58:00,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:00,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:00,633 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:00,645 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 19:58:00,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 19:58:00,842 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 19:58:00,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash 337672886, now seen corresponding path program 12 times [2024-10-11 19:58:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:00,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230584881] [2024-10-11 19:58:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:00,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:00,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230584881] [2024-10-11 19:58:00,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230584881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:00,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819688965] [2024-10-11 19:58:00,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:58:00,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:00,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:00,956 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 19:58:00,962 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 19:58:00,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 19:58:00,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:00,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:58:00,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:01,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819688965] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:01,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:58:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 19:58:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033240908] [2024-10-11 19:58:01,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:01,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:58:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:58:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:58:01,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:58:01,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 496 transitions, 11838 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:01,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:01,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:58:01,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:02,818 INFO L124 PetriNetUnfolderBase]: 4253/7014 cut-off events. [2024-10-11 19:58:02,819 INFO L125 PetriNetUnfolderBase]: For 401491/401491 co-relation queries the response was YES. [2024-10-11 19:58:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69530 conditions, 7014 events. 4253/7014 cut-off events. For 401491/401491 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42440 event pairs, 615 based on Foata normal form. 54/7068 useless extension candidates. Maximal degree in co-relation 68976. Up to 2716 conditions per place. [2024-10-11 19:58:02,910 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 329 selfloop transitions, 283 changer transitions 2/615 dead transitions. [2024-10-11 19:58:02,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 615 transitions, 14976 flow [2024-10-11 19:58:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 19:58:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 19:58:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 205 transitions. [2024-10-11 19:58:02,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-10-11 19:58:02,912 INFO L175 Difference]: Start difference. First operand has 271 places, 496 transitions, 11838 flow. Second operand 20 states and 205 transitions. [2024-10-11 19:58:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 615 transitions, 14976 flow [2024-10-11 19:58:04,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 615 transitions, 14593 flow, removed 176 selfloop flow, removed 3 redundant places. [2024-10-11 19:58:04,621 INFO L231 Difference]: Finished difference. Result has 294 places, 519 transitions, 13240 flow [2024-10-11 19:58:04,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11540, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=13240, PETRI_PLACES=294, PETRI_TRANSITIONS=519} [2024-10-11 19:58:04,622 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 268 predicate places. [2024-10-11 19:58:04,623 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 519 transitions, 13240 flow [2024-10-11 19:58:04,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:04,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:04,623 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:04,635 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 19:58:04,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:04,824 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 19:58:04,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:04,824 INFO L85 PathProgramCache]: Analyzing trace with hash -562072520, now seen corresponding path program 13 times [2024-10-11 19:58:04,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:04,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086998676] [2024-10-11 19:58:04,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:04,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086998676] [2024-10-11 19:58:04,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086998676] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552490048] [2024-10-11 19:58:04,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 19:58:04,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:04,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:04,885 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 19:58:04,886 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 19:58:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:04,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:58:04,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:04,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:04,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552490048] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:04,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:58:04,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 19:58:04,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078904631] [2024-10-11 19:58:04,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:04,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:58:04,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:58:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:58:05,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:58:05,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 519 transitions, 13240 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:05,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:05,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:58:05,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:06,781 INFO L124 PetriNetUnfolderBase]: 4250/7009 cut-off events. [2024-10-11 19:58:06,781 INFO L125 PetriNetUnfolderBase]: For 432427/432427 co-relation queries the response was YES. [2024-10-11 19:58:06,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72295 conditions, 7009 events. 4250/7009 cut-off events. For 432427/432427 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 42652 event pairs, 1553 based on Foata normal form. 8/7017 useless extension candidates. Maximal degree in co-relation 71626. Up to 5629 conditions per place. [2024-10-11 19:58:06,851 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 500 selfloop transitions, 71 changer transitions 2/574 dead transitions. [2024-10-11 19:58:06,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 574 transitions, 15103 flow [2024-10-11 19:58:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:58:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:58:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-10-11 19:58:06,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-10-11 19:58:06,853 INFO L175 Difference]: Start difference. First operand has 294 places, 519 transitions, 13240 flow. Second operand 11 states and 126 transitions. [2024-10-11 19:58:06,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 574 transitions, 15103 flow [2024-10-11 19:58:08,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 574 transitions, 14847 flow, removed 84 selfloop flow, removed 13 redundant places. [2024-10-11 19:58:08,493 INFO L231 Difference]: Finished difference. Result has 289 places, 516 transitions, 13129 flow [2024-10-11 19:58:08,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12964, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13129, PETRI_PLACES=289, PETRI_TRANSITIONS=516} [2024-10-11 19:58:08,494 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 263 predicate places. [2024-10-11 19:58:08,495 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 516 transitions, 13129 flow [2024-10-11 19:58:08,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:08,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:08,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:08,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:08,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:08,696 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:58:08,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:08,696 INFO L85 PathProgramCache]: Analyzing trace with hash 572267720, now seen corresponding path program 14 times [2024-10-11 19:58:08,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:08,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202880443] [2024-10-11 19:58:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:08,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:08,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202880443] [2024-10-11 19:58:08,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202880443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825279481] [2024-10-11 19:58:08,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:58:08,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:08,801 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 19:58:08,803 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 19:58:08,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:58:08,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:08,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:58:08,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:08,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825279481] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:08,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:58:08,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 7 [2024-10-11 19:58:08,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415419606] [2024-10-11 19:58:08,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:08,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 19:58:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 19:58:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:58:08,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-11 19:58:08,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 516 transitions, 13129 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:08,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:08,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-11 19:58:08,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:11,464 INFO L124 PetriNetUnfolderBase]: 5726/10205 cut-off events. [2024-10-11 19:58:11,464 INFO L125 PetriNetUnfolderBase]: For 603906/604769 co-relation queries the response was YES. [2024-10-11 19:58:11,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103568 conditions, 10205 events. 5726/10205 cut-off events. For 603906/604769 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 75728 event pairs, 531 based on Foata normal form. 350/10439 useless extension candidates. Maximal degree in co-relation 101924. Up to 2568 conditions per place. [2024-10-11 19:58:11,608 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 895 selfloop transitions, 10 changer transitions 99/1165 dead transitions. [2024-10-11 19:58:11,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1165 transitions, 32212 flow [2024-10-11 19:58:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:58:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:58:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-10-11 19:58:11,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-11 19:58:11,610 INFO L175 Difference]: Start difference. First operand has 289 places, 516 transitions, 13129 flow. Second operand 5 states and 85 transitions. [2024-10-11 19:58:11,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1165 transitions, 32212 flow [2024-10-11 19:58:16,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 1165 transitions, 31958 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-11 19:58:16,033 INFO L231 Difference]: Finished difference. Result has 286 places, 512 transitions, 12824 flow [2024-10-11 19:58:16,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13020, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12824, PETRI_PLACES=286, PETRI_TRANSITIONS=512} [2024-10-11 19:58:16,034 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2024-10-11 19:58:16,034 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 512 transitions, 12824 flow [2024-10-11 19:58:16,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:16,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:16,034 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:16,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 19:58:16,234 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,SelfDestructingSolverStorable20 [2024-10-11 19:58:16,235 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:58:16,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1830706175, now seen corresponding path program 15 times [2024-10-11 19:58:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269989963] [2024-10-11 19:58:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:16,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:16,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269989963] [2024-10-11 19:58:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269989963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748850439] [2024-10-11 19:58:16,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:58:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:16,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:16,307 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 19:58:16,308 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 19:58:16,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 19:58:16,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:16,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:58:16,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:16,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:16,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748850439] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:16,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:58:16,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-11 19:58:16,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658640236] [2024-10-11 19:58:16,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:16,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 19:58:16,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:16,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 19:58:16,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-10-11 19:58:16,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:58:16,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 512 transitions, 12824 flow. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:16,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:16,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:58:16,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:21,064 INFO L124 PetriNetUnfolderBase]: 10166/16602 cut-off events. [2024-10-11 19:58:21,064 INFO L125 PetriNetUnfolderBase]: For 1103821/1103821 co-relation queries the response was YES. [2024-10-11 19:58:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179725 conditions, 16602 events. 10166/16602 cut-off events. For 1103821/1103821 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 113391 event pairs, 411 based on Foata normal form. 185/16787 useless extension candidates. Maximal degree in co-relation 178035. Up to 3452 conditions per place. [2024-10-11 19:58:21,252 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 462 selfloop transitions, 612 changer transitions 31/1106 dead transitions. [2024-10-11 19:58:21,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1106 transitions, 27655 flow [2024-10-11 19:58:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-11 19:58:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-11 19:58:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 464 transitions. [2024-10-11 19:58:21,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-11 19:58:21,259 INFO L175 Difference]: Start difference. First operand has 286 places, 512 transitions, 12824 flow. Second operand 44 states and 464 transitions. [2024-10-11 19:58:21,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1106 transitions, 27655 flow [2024-10-11 19:58:30,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1106 transitions, 27273 flow, removed 191 selfloop flow, removed 0 redundant places. [2024-10-11 19:58:30,384 INFO L231 Difference]: Finished difference. Result has 349 places, 748 transitions, 21761 flow [2024-10-11 19:58:30,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12804, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=21761, PETRI_PLACES=349, PETRI_TRANSITIONS=748} [2024-10-11 19:58:30,385 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 323 predicate places. [2024-10-11 19:58:30,386 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 748 transitions, 21761 flow [2024-10-11 19:58:30,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:30,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:30,386 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:30,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:30,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:30,587 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:58:30,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash 325825773, now seen corresponding path program 16 times [2024-10-11 19:58:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:30,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512710668] [2024-10-11 19:58:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512710668] [2024-10-11 19:58:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512710668] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171896460] [2024-10-11 19:58:30,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:58:30,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:30,661 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 19:58:30,665 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 19:58:30,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:58:30,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:30,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:58:30,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:30,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:30,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171896460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:30,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:58:30,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-11 19:58:30,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895792489] [2024-10-11 19:58:30,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:30,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:58:30,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:30,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:58:30,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:58:30,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:58:30,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 748 transitions, 21761 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:30,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:30,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:58:30,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:36,613 INFO L124 PetriNetUnfolderBase]: 12327/20115 cut-off events. [2024-10-11 19:58:36,613 INFO L125 PetriNetUnfolderBase]: For 1748771/1748771 co-relation queries the response was YES. [2024-10-11 19:58:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237117 conditions, 20115 events. 12327/20115 cut-off events. For 1748771/1748771 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 140557 event pairs, 623 based on Foata normal form. 71/20186 useless extension candidates. Maximal degree in co-relation 235115. Up to 6748 conditions per place. [2024-10-11 19:58:37,112 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 448 selfloop transitions, 886 changer transitions 86/1421 dead transitions. [2024-10-11 19:58:37,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1421 transitions, 41996 flow [2024-10-11 19:58:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 19:58:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 19:58:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 205 transitions. [2024-10-11 19:58:37,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44956140350877194 [2024-10-11 19:58:37,116 INFO L175 Difference]: Start difference. First operand has 349 places, 748 transitions, 21761 flow. Second operand 19 states and 205 transitions. [2024-10-11 19:58:37,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1421 transitions, 41996 flow [2024-10-11 19:58:53,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1421 transitions, 39885 flow, removed 649 selfloop flow, removed 16 redundant places. [2024-10-11 19:58:53,266 INFO L231 Difference]: Finished difference. Result has 360 places, 1133 transitions, 35198 flow [2024-10-11 19:58:53,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20825, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=511, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=35198, PETRI_PLACES=360, PETRI_TRANSITIONS=1133} [2024-10-11 19:58:53,267 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 334 predicate places. [2024-10-11 19:58:53,267 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 1133 transitions, 35198 flow [2024-10-11 19:58:53,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:53,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:53,268 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:53,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:53,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 19:58:53,469 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:58:53,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:53,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1788707173, now seen corresponding path program 17 times [2024-10-11 19:58:53,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:58:53,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627397070] [2024-10-11 19:58:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:53,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:58:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:58:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627397070] [2024-10-11 19:58:53,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627397070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:58:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852593105] [2024-10-11 19:58:53,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:58:53,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:58:53,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:53,531 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:58:53,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 19:58:53,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-11 19:58:53,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:53,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:58:53,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:53,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:53,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852593105] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:53,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:58:53,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-11 19:58:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216231284] [2024-10-11 19:58:53,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:53,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 19:58:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:58:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 19:58:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 19:58:53,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-11 19:58:53,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1133 transitions, 35198 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:53,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:53,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-11 19:58:53,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:03,267 INFO L124 PetriNetUnfolderBase]: 15412/24959 cut-off events. [2024-10-11 19:59:03,267 INFO L125 PetriNetUnfolderBase]: For 2314122/2314122 co-relation queries the response was YES. [2024-10-11 19:59:03,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302057 conditions, 24959 events. 15412/24959 cut-off events. For 2314122/2314122 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 177379 event pairs, 1246 based on Foata normal form. 58/25017 useless extension candidates. Maximal degree in co-relation 300038. Up to 5371 conditions per place. [2024-10-11 19:59:03,706 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 751 selfloop transitions, 773 changer transitions 10/1535 dead transitions. [2024-10-11 19:59:03,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1535 transitions, 47910 flow [2024-10-11 19:59:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:59:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:59:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 239 transitions. [2024-10-11 19:59:03,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4742063492063492 [2024-10-11 19:59:03,708 INFO L175 Difference]: Start difference. First operand has 360 places, 1133 transitions, 35198 flow. Second operand 21 states and 239 transitions. [2024-10-11 19:59:03,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1535 transitions, 47910 flow