./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/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:51:53,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:51:53,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:51:53,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:51:53,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:51:53,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:51:53,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:51:53,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:51:53,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:51:53,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:51:53,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:51:53,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:51:53,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:51:53,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:51:53,140 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:51:53,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:51:53,140 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:51:53,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:51:53,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:51:53,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:51:53,144 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:51:53,146 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:51:53,146 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:51:53,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:51:53,147 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:51:53,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:51:53,147 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:51:53,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:51:53,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:51:53,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:51:53,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:51:53,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:51:53,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:51:53,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:51:53,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:51:53,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:51:53,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:51:53,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:51:53,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:51:53,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:51:53,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:51:53,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:51:53,152 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-10-14 19:51:53,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:51:53,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:51:53,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:51:53,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:51:53,418 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:51:53,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-14 19:51:54,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:51:55,002 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:51:55,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-14 19:51:55,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21c290c5/117ad5e2b9bd4b5fa1e64b36464f6b92/FLAGe8e418f4c [2024-10-14 19:51:55,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21c290c5/117ad5e2b9bd4b5fa1e64b36464f6b92 [2024-10-14 19:51:55,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:51:55,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:51:55,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:51:55,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:51:55,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:51:55,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5b8645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55, skipping insertion in model container [2024-10-14 19:51:55,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:51:55,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:51:55,262 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:51:55,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:51:55,301 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:51:55,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55 WrapperNode [2024-10-14 19:51:55,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:51:55,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:51:55,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:51:55,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:51:55,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,342 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-10-14 19:51:55,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:51:55,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:51:55,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:51:55,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:51:55,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,373 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]. [2024-10-14 19:51:55,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:51:55,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:51:55,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:51:55,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:51:55,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (1/1) ... [2024-10-14 19:51:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:51:55,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:55,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:51:55,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:51:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:51:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:51:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:51:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:51:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:51:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:51:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:51:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:51:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:51:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:51:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:51:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:51:55,516 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:51:55,638 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:51:55,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:51:55,868 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:51:55,869 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:51:56,067 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:51:56,067 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 19:51:56,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:51:56 BoogieIcfgContainer [2024-10-14 19:51:56,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:51:56,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:51:56,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:51:56,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:51:56,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:51:55" (1/3) ... [2024-10-14 19:51:56,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e90d31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:51:56, skipping insertion in model container [2024-10-14 19:51:56,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:55" (2/3) ... [2024-10-14 19:51:56,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e90d31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:51:56, skipping insertion in model container [2024-10-14 19:51:56,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:51:56" (3/3) ... [2024-10-14 19:51:56,082 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-10-14 19:51:56,106 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:51:56,107 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:51:56,107 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:51:56,159 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 19:51:56,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 99 flow [2024-10-14 19:51:56,222 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-14 19:51:56,222 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:51:56,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 4/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-14 19:51:56,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 99 flow [2024-10-14 19:51:56,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 88 flow [2024-10-14 19:51:56,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:51:56,243 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;@6892deb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:51:56,244 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 19:51:56,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:51:56,258 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-10-14 19:51:56,259 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:51:56,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:56,260 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:56,260 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:56,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash -912570270, now seen corresponding path program 1 times [2024-10-14 19:51:56,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:56,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191687948] [2024-10-14 19:51:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:56,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:57,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191687948] [2024-10-14 19:51:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191687948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:51:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:51:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:51:57,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265730792] [2024-10-14 19:51:57,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:51:57,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:51:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:57,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:51:57,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:51:57,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-14 19:51:57,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-14 19:51:57,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:57,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-14 19:51:57,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:57,680 INFO L124 PetriNetUnfolderBase]: 2009/2876 cut-off events. [2024-10-14 19:51:57,680 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-14 19:51:57,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 2876 events. 2009/2876 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 13733 event pairs, 73 based on Foata normal form. 1/2342 useless extension candidates. Maximal degree in co-relation 5564. Up to 990 conditions per place. [2024-10-14 19:51:57,701 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 73 selfloop transitions, 8 changer transitions 6/94 dead transitions. [2024-10-14 19:51:57,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 94 transitions, 404 flow [2024-10-14 19:51:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:51:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:51:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-10-14 19:51:57,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 19:51:57,717 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 88 flow. Second operand 6 states and 156 transitions. [2024-10-14 19:51:57,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 94 transitions, 404 flow [2024-10-14 19:51:57,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 94 transitions, 376 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:51:57,729 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 122 flow [2024-10-14 19:51:57,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-10-14 19:51:57,736 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-10-14 19:51:57,737 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 122 flow [2024-10-14 19:51:57,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-14 19:51:57,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:57,737 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:57,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:51:57,738 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:57,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1854899698, now seen corresponding path program 1 times [2024-10-14 19:51:57,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:57,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122812243] [2024-10-14 19:51:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:57,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:57,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:57,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122812243] [2024-10-14 19:51:57,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122812243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:51:57,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:51:57,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:51:57,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574609949] [2024-10-14 19:51:57,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:51:57,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:51:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:51:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:51:57,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-14 19:51:57,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-14 19:51:57,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:57,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-14 19:51:57,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:58,054 INFO L124 PetriNetUnfolderBase]: 1279/2023 cut-off events. [2024-10-14 19:51:58,054 INFO L125 PetriNetUnfolderBase]: For 614/661 co-relation queries the response was YES. [2024-10-14 19:51:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 2023 events. 1279/2023 cut-off events. For 614/661 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10410 event pairs, 423 based on Foata normal form. 88/1764 useless extension candidates. Maximal degree in co-relation 3193. Up to 1126 conditions per place. [2024-10-14 19:51:58,067 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 45 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-14 19:51:58,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 273 flow [2024-10-14 19:51:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:51:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:51:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-14 19:51:58,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7350427350427351 [2024-10-14 19:51:58,071 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 122 flow. Second operand 3 states and 86 transitions. [2024-10-14 19:51:58,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 273 flow [2024-10-14 19:51:58,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:51:58,074 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 138 flow [2024-10-14 19:51:58,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-10-14 19:51:58,076 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-10-14 19:51:58,076 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 138 flow [2024-10-14 19:51:58,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-14 19:51:58,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:58,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:58,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:51:58,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:58,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1337608478, now seen corresponding path program 1 times [2024-10-14 19:51:58,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:58,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947938220] [2024-10-14 19:51:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:58,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:58,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947938220] [2024-10-14 19:51:58,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947938220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:51:58,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:51:58,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:51:58,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825537933] [2024-10-14 19:51:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:51:58,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:51:58,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:51:58,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:51:58,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-14 19:51:58,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-14 19:51:58,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:58,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-14 19:51:58,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:58,408 INFO L124 PetriNetUnfolderBase]: 1740/2768 cut-off events. [2024-10-14 19:51:58,409 INFO L125 PetriNetUnfolderBase]: For 1030/1063 co-relation queries the response was YES. [2024-10-14 19:51:58,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 2768 events. 1740/2768 cut-off events. For 1030/1063 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14866 event pairs, 585 based on Foata normal form. 107/2338 useless extension candidates. Maximal degree in co-relation 4769. Up to 1579 conditions per place. [2024-10-14 19:51:58,424 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 44 selfloop transitions, 2 changer transitions 1/60 dead transitions. [2024-10-14 19:51:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 297 flow [2024-10-14 19:51:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:51:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:51:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-14 19:51:58,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-10-14 19:51:58,427 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 138 flow. Second operand 3 states and 84 transitions. [2024-10-14 19:51:58,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 297 flow [2024-10-14 19:51:58,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:51:58,431 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 150 flow [2024-10-14 19:51:58,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-10-14 19:51:58,433 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-10-14 19:51:58,433 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 150 flow [2024-10-14 19:51:58,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-14 19:51:58,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:58,434 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:58,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:51:58,434 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:58,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash -752747674, now seen corresponding path program 1 times [2024-10-14 19:51:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092772048] [2024-10-14 19:51:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 19:51:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092772048] [2024-10-14 19:51:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092772048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:58,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527341614] [2024-10-14 19:51:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:58,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:58,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:58,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:51:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:58,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:51:58,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:51:58,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:51:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527341614] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:58,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:58,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 9 [2024-10-14 19:51:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503010189] [2024-10-14 19:51:58,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:58,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 19:51:58,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 19:51:58,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-14 19:51:59,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-14 19:51:59,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 150 flow. Second operand has 9 states, 9 states have (on average 16.0) internal successors, (144), 9 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) [2024-10-14 19:51:59,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:59,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-14 19:51:59,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:59,605 INFO L124 PetriNetUnfolderBase]: 3359/4934 cut-off events. [2024-10-14 19:51:59,605 INFO L125 PetriNetUnfolderBase]: For 2391/2431 co-relation queries the response was YES. [2024-10-14 19:51:59,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12396 conditions, 4934 events. 3359/4934 cut-off events. For 2391/2431 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 24558 event pairs, 63 based on Foata normal form. 40/4300 useless extension candidates. Maximal degree in co-relation 10943. Up to 1697 conditions per place. [2024-10-14 19:51:59,626 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 84 selfloop transitions, 9 changer transitions 15/117 dead transitions. [2024-10-14 19:51:59,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 117 transitions, 624 flow [2024-10-14 19:51:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:51:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:51:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-10-14 19:51:59,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2024-10-14 19:51:59,632 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 150 flow. Second operand 8 states and 185 transitions. [2024-10-14 19:51:59,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 117 transitions, 624 flow [2024-10-14 19:51:59,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 117 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:51:59,639 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 203 flow [2024-10-14 19:51:59,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-10-14 19:51:59,641 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-10-14 19:51:59,642 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 203 flow [2024-10-14 19:51:59,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.0) internal successors, (144), 9 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) [2024-10-14 19:51:59,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:59,642 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:59,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 19:51:59,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:59,847 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:59,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash -366690366, now seen corresponding path program 2 times [2024-10-14 19:51:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:59,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863304455] [2024-10-14 19:51:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:51:59,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863304455] [2024-10-14 19:51:59,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863304455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:51:59,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:51:59,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:51:59,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674085877] [2024-10-14 19:51:59,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:51:59,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:51:59,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:59,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:51:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:52:00,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-14 19:52:00,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-14 19:52:00,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:00,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-14 19:52:00,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:00,707 INFO L124 PetriNetUnfolderBase]: 4986/7387 cut-off events. [2024-10-14 19:52:00,708 INFO L125 PetriNetUnfolderBase]: For 6100/6244 co-relation queries the response was YES. [2024-10-14 19:52:00,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19641 conditions, 7387 events. 4986/7387 cut-off events. For 6100/6244 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 39119 event pairs, 1208 based on Foata normal form. 298/6747 useless extension candidates. Maximal degree in co-relation 14595. Up to 3065 conditions per place. [2024-10-14 19:52:00,752 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 68 selfloop transitions, 7 changer transitions 3/87 dead transitions. [2024-10-14 19:52:00,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 503 flow [2024-10-14 19:52:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:52:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:52:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-10-14 19:52:00,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6102564102564103 [2024-10-14 19:52:00,754 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 203 flow. Second operand 5 states and 119 transitions. [2024-10-14 19:52:00,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 503 flow [2024-10-14 19:52:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 503 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:52:00,774 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 214 flow [2024-10-14 19:52:00,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2024-10-14 19:52:00,776 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-10-14 19:52:00,777 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 214 flow [2024-10-14 19:52:00,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-14 19:52:00,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:00,778 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:00,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:52:00,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:52:00,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1309263434, now seen corresponding path program 3 times [2024-10-14 19:52:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:52:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671653673] [2024-10-14 19:52:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:52:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:01,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:52:01,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671653673] [2024-10-14 19:52:01,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671653673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:52:01,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82591292] [2024-10-14 19:52:01,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:52:01,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:01,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:52:01,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:52:01,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:52:01,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:52:01,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:01,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:52:01,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:01,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:01,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82591292] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:01,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:52:01,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-10-14 19:52:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807457407] [2024-10-14 19:52:01,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:01,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:52:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:52:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:52:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:52:01,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-14 19:52:01,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 214 flow. Second operand has 16 states, 16 states have (on average 12.75) internal successors, (204), 16 states have internal predecessors, (204), 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) [2024-10-14 19:52:01,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:01,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-14 19:52:01,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:04,306 INFO L124 PetriNetUnfolderBase]: 11560/17255 cut-off events. [2024-10-14 19:52:04,307 INFO L125 PetriNetUnfolderBase]: For 18202/18202 co-relation queries the response was YES. [2024-10-14 19:52:04,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47853 conditions, 17255 events. 11560/17255 cut-off events. For 18202/18202 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 100972 event pairs, 885 based on Foata normal form. 532/15948 useless extension candidates. Maximal degree in co-relation 41361. Up to 3880 conditions per place. [2024-10-14 19:52:04,418 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 304 selfloop transitions, 100 changer transitions 37/446 dead transitions. [2024-10-14 19:52:04,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 446 transitions, 2612 flow [2024-10-14 19:52:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-14 19:52:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-14 19:52:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 691 transitions. [2024-10-14 19:52:04,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5536858974358975 [2024-10-14 19:52:04,421 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 214 flow. Second operand 32 states and 691 transitions. [2024-10-14 19:52:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 446 transitions, 2612 flow [2024-10-14 19:52:04,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 446 transitions, 2538 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-10-14 19:52:04,489 INFO L231 Difference]: Finished difference. Result has 113 places, 143 transitions, 1227 flow [2024-10-14 19:52:04,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1227, PETRI_PLACES=113, PETRI_TRANSITIONS=143} [2024-10-14 19:52:04,490 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-10-14 19:52:04,491 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 143 transitions, 1227 flow [2024-10-14 19:52:04,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.75) internal successors, (204), 16 states have internal predecessors, (204), 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) [2024-10-14 19:52:04,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:04,491 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:04,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:52:04,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 19:52:04,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:52:04,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1084645138, now seen corresponding path program 4 times [2024-10-14 19:52:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:52:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366297353] [2024-10-14 19:52:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:04,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:52:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:52:04,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:52:04,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366297353] [2024-10-14 19:52:04,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366297353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:52:04,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399563424] [2024-10-14 19:52:04,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:52:04,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:04,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:52:04,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:52:04,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:52:04,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:52:04,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:04,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:52:04,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:04,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:52:04,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399563424] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:04,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:52:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-10-14 19:52:04,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002359170] [2024-10-14 19:52:04,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:04,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:52:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:52:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:52:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:52:04,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-14 19:52:04,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 143 transitions, 1227 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-14 19:52:04,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:04,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-14 19:52:04,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:07,303 INFO L124 PetriNetUnfolderBase]: 10581/17056 cut-off events. [2024-10-14 19:52:07,303 INFO L125 PetriNetUnfolderBase]: For 91802/92182 co-relation queries the response was YES. [2024-10-14 19:52:07,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68207 conditions, 17056 events. 10581/17056 cut-off events. For 91802/92182 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 113143 event pairs, 4583 based on Foata normal form. 458/15458 useless extension candidates. Maximal degree in co-relation 64675. Up to 6178 conditions per place. [2024-10-14 19:52:07,489 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 203 selfloop transitions, 34 changer transitions 0/279 dead transitions. [2024-10-14 19:52:07,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 279 transitions, 2806 flow [2024-10-14 19:52:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:52:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:52:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-10-14 19:52:07,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7756410256410257 [2024-10-14 19:52:07,491 INFO L175 Difference]: Start difference. First operand has 113 places, 143 transitions, 1227 flow. Second operand 4 states and 121 transitions. [2024-10-14 19:52:07,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 279 transitions, 2806 flow [2024-10-14 19:52:07,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 279 transitions, 2452 flow, removed 147 selfloop flow, removed 8 redundant places. [2024-10-14 19:52:07,822 INFO L231 Difference]: Finished difference. Result has 110 places, 169 transitions, 1457 flow [2024-10-14 19:52:07,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1457, PETRI_PLACES=110, PETRI_TRANSITIONS=169} [2024-10-14 19:52:07,824 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-10-14 19:52:07,824 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 169 transitions, 1457 flow [2024-10-14 19:52:07,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-14 19:52:07,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:07,824 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:07,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 19:52:08,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:08,029 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:52:08,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2054651024, now seen corresponding path program 1 times [2024-10-14 19:52:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:52:08,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292447914] [2024-10-14 19:52:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:08,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:52:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:52:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:52:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292447914] [2024-10-14 19:52:08,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292447914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:52:08,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339142034] [2024-10-14 19:52:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:08,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:08,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:52:08,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:52:08,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:52:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:08,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:52:08,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:08,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:52:08,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339142034] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:08,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:52:08,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-10-14 19:52:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120802163] [2024-10-14 19:52:08,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:08,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:52:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:52:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:52:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:52:08,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-14 19:52:08,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 169 transitions, 1457 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-14 19:52:08,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:08,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-14 19:52:08,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:12,273 INFO L124 PetriNetUnfolderBase]: 20992/33806 cut-off events. [2024-10-14 19:52:12,273 INFO L125 PetriNetUnfolderBase]: For 174701/175658 co-relation queries the response was YES. [2024-10-14 19:52:12,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132434 conditions, 33806 events. 20992/33806 cut-off events. For 174701/175658 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 248702 event pairs, 8088 based on Foata normal form. 1079/30595 useless extension candidates. Maximal degree in co-relation 119652. Up to 12950 conditions per place. [2024-10-14 19:52:12,635 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 253 selfloop transitions, 40 changer transitions 0/335 dead transitions. [2024-10-14 19:52:12,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 335 transitions, 3540 flow [2024-10-14 19:52:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:52:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:52:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-14 19:52:12,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-14 19:52:12,637 INFO L175 Difference]: Start difference. First operand has 110 places, 169 transitions, 1457 flow. Second operand 4 states and 117 transitions. [2024-10-14 19:52:12,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 335 transitions, 3540 flow [2024-10-14 19:52:12,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 335 transitions, 3434 flow, removed 53 selfloop flow, removed 0 redundant places. [2024-10-14 19:52:12,958 INFO L231 Difference]: Finished difference. Result has 115 places, 200 transitions, 1908 flow [2024-10-14 19:52:12,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=115, PETRI_TRANSITIONS=200} [2024-10-14 19:52:12,959 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2024-10-14 19:52:12,959 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 200 transitions, 1908 flow [2024-10-14 19:52:12,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-14 19:52:12,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:12,959 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:12,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 19:52:13,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:13,160 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:52:13,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1137537408, now seen corresponding path program 5 times [2024-10-14 19:52:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:52:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573012314] [2024-10-14 19:52:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:52:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 19:52:13,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:52:13,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573012314] [2024-10-14 19:52:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573012314] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:52:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534045649] [2024-10-14 19:52:13,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:52:13,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:52:13,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:52:13,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:52:13,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-14 19:52:13,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:13,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:52:13,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:13,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:14,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534045649] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:14,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:52:14,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2024-10-14 19:52:14,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070983215] [2024-10-14 19:52:14,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:14,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 19:52:14,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:52:14,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 19:52:14,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-10-14 19:52:14,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-14 19:52:14,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 200 transitions, 1908 flow. Second operand has 23 states, 23 states have (on average 14.521739130434783) internal successors, (334), 23 states have internal predecessors, (334), 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) [2024-10-14 19:52:14,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:14,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-14 19:52:14,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:35,126 INFO L124 PetriNetUnfolderBase]: 102849/156997 cut-off events. [2024-10-14 19:52:35,127 INFO L125 PetriNetUnfolderBase]: For 944768/946445 co-relation queries the response was YES. [2024-10-14 19:52:36,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650586 conditions, 156997 events. 102849/156997 cut-off events. For 944768/946445 co-relation queries the response was YES. Maximal size of possible extension queue 4362. Compared 1257802 event pairs, 12783 based on Foata normal form. 6799/146148 useless extension candidates. Maximal degree in co-relation 551834. Up to 20974 conditions per place. [2024-10-14 19:52:36,811 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 850 selfloop transitions, 716 changer transitions 421/2012 dead transitions. [2024-10-14 19:52:36,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 2012 transitions, 22657 flow [2024-10-14 19:52:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-10-14 19:52:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-10-14 19:52:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 1683 transitions. [2024-10-14 19:52:36,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2024-10-14 19:52:36,818 INFO L175 Difference]: Start difference. First operand has 115 places, 200 transitions, 1908 flow. Second operand 72 states and 1683 transitions. [2024-10-14 19:52:36,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 2012 transitions, 22657 flow [2024-10-14 19:52:39,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 2012 transitions, 22181 flow, removed 238 selfloop flow, removed 0 redundant places. [2024-10-14 19:52:39,050 INFO L231 Difference]: Finished difference. Result has 204 places, 931 transitions, 13063 flow [2024-10-14 19:52:39,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=13063, PETRI_PLACES=204, PETRI_TRANSITIONS=931} [2024-10-14 19:52:39,051 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-10-14 19:52:39,051 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 931 transitions, 13063 flow [2024-10-14 19:52:39,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.521739130434783) internal successors, (334), 23 states have internal predecessors, (334), 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) [2024-10-14 19:52:39,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:39,052 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:39,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 19:52:39,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:39,253 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:52:39,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash -714565062, now seen corresponding path program 2 times [2024-10-14 19:52:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:52:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533112888] [2024-10-14 19:52:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:39,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:52:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 19:52:39,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:52:39,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533112888] [2024-10-14 19:52:39,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533112888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:52:39,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721126977] [2024-10-14 19:52:39,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:52:39,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:52:39,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:52:39,370 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:52:39,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:52:39,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:52:39,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:39,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:52:39,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 19:52:39,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 19:52:39,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721126977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:39,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:52:39,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-10-14 19:52:39,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146937466] [2024-10-14 19:52:39,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:39,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:52:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:52:39,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:52:39,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:52:39,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-14 19:52:39,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 931 transitions, 13063 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2024-10-14 19:52:39,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:39,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-14 19:52:39,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand