./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:19:16,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:19:16,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:19:16,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:19:16,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:19:16,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:19:16,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:19:16,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:19:16,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:19:16,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:19:16,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:19:16,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:19:16,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:19:16,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:19:16,776 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:19:16,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:19:16,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:19:16,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:19:16,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:19:16,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:19:16,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:19:16,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:19:16,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:19:16,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:19:16,780 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:19:16,780 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:19:16,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:19:16,781 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:19:16,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:19:16,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:19:16,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:19:16,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:19:16,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:19:16,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:19:16,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:19:16,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:19:16,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:19:16,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:19:16,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:19:16,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:19:16,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:19:16,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:19:16,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d [2024-10-24 12:19:17,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:19:17,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:19:17,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:19:17,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:19:17,078 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:19:17,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2024-10-24 12:19:18,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:19:18,762 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:19:18,763 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2024-10-24 12:19:18,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c5dd861/6824700d888f46f487975dc948cbfd2d/FLAG93b14f818 [2024-10-24 12:19:18,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c5dd861/6824700d888f46f487975dc948cbfd2d [2024-10-24 12:19:18,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:19:18,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:19:18,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:19:18,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:19:18,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:19:18,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:19:18" (1/1) ... [2024-10-24 12:19:18,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f0fd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:18, skipping insertion in model container [2024-10-24 12:19:18,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:19:18" (1/1) ... [2024-10-24 12:19:18,836 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:19:19,068 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2024-10-24 12:19:19,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:19:19,252 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:19:19,264 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2024-10-24 12:19:19,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:19:19,325 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:19:19,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19 WrapperNode [2024-10-24 12:19:19,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:19:19,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:19:19,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:19:19,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:19:19,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,372 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-10-24 12:19:19,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:19:19,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:19:19,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:19:19,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:19:19,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,400 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]. [2024-10-24 12:19:19,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:19:19,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:19:19,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:19:19,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:19:19,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (1/1) ... [2024-10-24 12:19:19,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:19:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:19:19,449 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) [2024-10-24 12:19:19,460 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 [2024-10-24 12:19:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:19:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:19:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-24 12:19:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-24 12:19:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-24 12:19:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-24 12:19:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-24 12:19:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-24 12:19:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:19:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:19:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:19:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:19:19,508 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:19:19,638 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:19:19,641 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:19:19,800 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:19:19,801 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:19:19,888 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:19:19,889 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:19:19,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:19:19 BoogieIcfgContainer [2024-10-24 12:19:19,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:19:19,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:19:19,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:19:19,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:19:19,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:19:18" (1/3) ... [2024-10-24 12:19:19,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea974d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:19:19, skipping insertion in model container [2024-10-24 12:19:19,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:19:19" (2/3) ... [2024-10-24 12:19:19,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea974d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:19:19, skipping insertion in model container [2024-10-24 12:19:19,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:19:19" (3/3) ... [2024-10-24 12:19:19,899 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2024-10-24 12:19:19,914 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:19:19,915 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:19:19,915 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:19:19,950 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:19:19,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-10-24 12:19:20,009 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-10-24 12:19:20,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:19:20,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-24 12:19:20,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-10-24 12:19:20,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-10-24 12:19:20,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:19:20,029 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=LoopHeads, 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;@63e0a218, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:19:20,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:19:20,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:19:20,041 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-10-24 12:19:20,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:19:20,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:20,042 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:19:20,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:20,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:20,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1810173638, now seen corresponding path program 1 times [2024-10-24 12:19:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:20,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544971155] [2024-10-24 12:19:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:20,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:20,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544971155] [2024-10-24 12:19:20,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544971155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:20,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:20,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:19:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960802666] [2024-10-24 12:19:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:20,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:19:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:19:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:19:20,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:19:20,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:20,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:20,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:19:20,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:21,019 INFO L124 PetriNetUnfolderBase]: 828/1645 cut-off events. [2024-10-24 12:19:21,020 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 12:19:21,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3000 conditions, 1645 events. 828/1645 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11513 event pairs, 223 based on Foata normal form. 58/1664 useless extension candidates. Maximal degree in co-relation 2989. Up to 644 conditions per place. [2024-10-24 12:19:21,034 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 26 selfloop transitions, 5 changer transitions 31/75 dead transitions. [2024-10-24 12:19:21,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 286 flow [2024-10-24 12:19:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:19:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:19:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-10-24 12:19:21,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6795366795366795 [2024-10-24 12:19:21,050 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 7 states and 176 transitions. [2024-10-24 12:19:21,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 286 flow [2024-10-24 12:19:21,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 75 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 12:19:21,056 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 130 flow [2024-10-24 12:19:21,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=130, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2024-10-24 12:19:21,062 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-10-24 12:19:21,062 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 130 flow [2024-10-24 12:19:21,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:21,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:21,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:19:21,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:19:21,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:21,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash 560742203, now seen corresponding path program 1 times [2024-10-24 12:19:21,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:21,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762628609] [2024-10-24 12:19:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:21,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:21,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762628609] [2024-10-24 12:19:21,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762628609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:21,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:21,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:19:21,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16692173] [2024-10-24 12:19:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:21,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:19:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:19:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:19:21,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:19:21,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:19:21,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:21,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:19:21,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:21,605 INFO L124 PetriNetUnfolderBase]: 684/1407 cut-off events. [2024-10-24 12:19:21,605 INFO L125 PetriNetUnfolderBase]: For 1175/1175 co-relation queries the response was YES. [2024-10-24 12:19:21,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 1407 events. 684/1407 cut-off events. For 1175/1175 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9664 event pairs, 126 based on Foata normal form. 40/1417 useless extension candidates. Maximal degree in co-relation 3713. Up to 517 conditions per place. [2024-10-24 12:19:21,617 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 29 selfloop transitions, 6 changer transitions 32/80 dead transitions. [2024-10-24 12:19:21,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 80 transitions, 440 flow [2024-10-24 12:19:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:19:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:19:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-10-24 12:19:21,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2024-10-24 12:19:21,621 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 130 flow. Second operand 10 states and 226 transitions. [2024-10-24 12:19:21,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 80 transitions, 440 flow [2024-10-24 12:19:21,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 390 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-24 12:19:21,628 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 168 flow [2024-10-24 12:19:21,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=168, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2024-10-24 12:19:21,630 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-10-24 12:19:21,630 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 168 flow [2024-10-24 12:19:21,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:19:21,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:21,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:19:21,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:19:21,631 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:21,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash -631894831, now seen corresponding path program 1 times [2024-10-24 12:19:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878622717] [2024-10-24 12:19:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:21,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:21,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878622717] [2024-10-24 12:19:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878622717] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:19:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646670134] [2024-10-24 12:19:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:21,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:19:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:21,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:19:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:19:21,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:19:21,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:19:21,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:21,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:19:21,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:22,337 INFO L124 PetriNetUnfolderBase]: 637/1294 cut-off events. [2024-10-24 12:19:22,341 INFO L125 PetriNetUnfolderBase]: For 2562/2564 co-relation queries the response was YES. [2024-10-24 12:19:22,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 1294 events. 637/1294 cut-off events. For 2562/2564 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8394 event pairs, 120 based on Foata normal form. 43/1324 useless extension candidates. Maximal degree in co-relation 3877. Up to 518 conditions per place. [2024-10-24 12:19:22,362 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 34 selfloop transitions, 11 changer transitions 34/92 dead transitions. [2024-10-24 12:19:22,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 610 flow [2024-10-24 12:19:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:19:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:19:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-10-24 12:19:22,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6432432432432432 [2024-10-24 12:19:22,368 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 168 flow. Second operand 10 states and 238 transitions. [2024-10-24 12:19:22,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 610 flow [2024-10-24 12:19:22,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 558 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-24 12:19:22,384 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 233 flow [2024-10-24 12:19:22,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2024-10-24 12:19:22,385 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-10-24 12:19:22,389 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 233 flow [2024-10-24 12:19:22,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:19:22,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:22,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:19:22,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:19:22,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:22,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:22,390 INFO L85 PathProgramCache]: Analyzing trace with hash -602736560, now seen corresponding path program 1 times [2024-10-24 12:19:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:22,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149368303] [2024-10-24 12:19:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:22,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:22,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:22,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149368303] [2024-10-24 12:19:22,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149368303] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:22,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:22,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:19:22,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892697837] [2024-10-24 12:19:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:22,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:19:22,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:19:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:19:22,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-24 12:19:22,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-10-24 12:19:22,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:22,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-24 12:19:22,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:22,855 INFO L124 PetriNetUnfolderBase]: 878/1742 cut-off events. [2024-10-24 12:19:22,858 INFO L125 PetriNetUnfolderBase]: For 1871/1895 co-relation queries the response was YES. [2024-10-24 12:19:22,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 1742 events. 878/1742 cut-off events. For 1871/1895 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11834 event pairs, 240 based on Foata normal form. 83/1723 useless extension candidates. Maximal degree in co-relation 4283. Up to 718 conditions per place. [2024-10-24 12:19:22,901 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 26 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-10-24 12:19:22,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 329 flow [2024-10-24 12:19:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:19:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:19:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-24 12:19:22,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7364864864864865 [2024-10-24 12:19:22,906 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 233 flow. Second operand 4 states and 109 transitions. [2024-10-24 12:19:22,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 329 flow [2024-10-24 12:19:22,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 307 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-10-24 12:19:22,931 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 249 flow [2024-10-24 12:19:22,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-10-24 12:19:22,932 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-10-24 12:19:22,933 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 249 flow [2024-10-24 12:19:22,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-10-24 12:19:22,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:22,934 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] [2024-10-24 12:19:22,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:19:22,935 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:22,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1880414311, now seen corresponding path program 1 times [2024-10-24 12:19:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:22,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878171719] [2024-10-24 12:19:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:22,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878171719] [2024-10-24 12:19:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878171719] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:23,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:23,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:19:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718246264] [2024-10-24 12:19:23,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:23,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:19:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:19:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:19:23,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-24 12:19:23,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-24 12:19:23,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:23,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-24 12:19:23,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:23,444 INFO L124 PetriNetUnfolderBase]: 717/1453 cut-off events. [2024-10-24 12:19:23,446 INFO L125 PetriNetUnfolderBase]: For 901/1433 co-relation queries the response was YES. [2024-10-24 12:19:23,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3807 conditions, 1453 events. 717/1453 cut-off events. For 901/1433 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9364 event pairs, 64 based on Foata normal form. 97/1468 useless extension candidates. Maximal degree in co-relation 3783. Up to 616 conditions per place. [2024-10-24 12:19:23,467 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 33 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2024-10-24 12:19:23,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 394 flow [2024-10-24 12:19:23,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:19:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:19:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-10-24 12:19:23,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.745945945945946 [2024-10-24 12:19:23,473 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 249 flow. Second operand 5 states and 138 transitions. [2024-10-24 12:19:23,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 394 flow [2024-10-24 12:19:23,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:19:23,479 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 301 flow [2024-10-24 12:19:23,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-10-24 12:19:23,480 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-10-24 12:19:23,481 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 301 flow [2024-10-24 12:19:23,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-24 12:19:23,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:23,481 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] [2024-10-24 12:19:23,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:19:23,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:23,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash 206279039, now seen corresponding path program 1 times [2024-10-24 12:19:23,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:23,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680227689] [2024-10-24 12:19:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:23,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:23,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680227689] [2024-10-24 12:19:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680227689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:23,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:23,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:19:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496282330] [2024-10-24 12:19:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:23,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:19:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:19:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:19:23,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-24 12:19:23,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:23,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:23,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-24 12:19:23,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:23,785 INFO L124 PetriNetUnfolderBase]: 573/1105 cut-off events. [2024-10-24 12:19:23,785 INFO L125 PetriNetUnfolderBase]: For 1922/2894 co-relation queries the response was YES. [2024-10-24 12:19:23,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 1105 events. 573/1105 cut-off events. For 1922/2894 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6447 event pairs, 32 based on Foata normal form. 90/1121 useless extension candidates. Maximal degree in co-relation 3493. Up to 488 conditions per place. [2024-10-24 12:19:23,795 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 32 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-10-24 12:19:23,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 436 flow [2024-10-24 12:19:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:19:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:19:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-10-24 12:19:23,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-10-24 12:19:23,797 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 301 flow. Second operand 6 states and 159 transitions. [2024-10-24 12:19:23,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 436 flow [2024-10-24 12:19:23,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 411 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-24 12:19:23,801 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 321 flow [2024-10-24 12:19:23,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-10-24 12:19:23,802 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-10-24 12:19:23,802 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 321 flow [2024-10-24 12:19:23,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:23,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:23,803 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, 1, 1, 1] [2024-10-24 12:19:23,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:19:23,803 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:23,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1469126521, now seen corresponding path program 1 times [2024-10-24 12:19:23,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:23,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273486093] [2024-10-24 12:19:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:23,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:23,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:23,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273486093] [2024-10-24 12:19:23,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273486093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:23,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:23,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:19:23,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500714678] [2024-10-24 12:19:23,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:23,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:19:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:19:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:19:23,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-10-24 12:19:23,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-10-24 12:19:23,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:23,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-10-24 12:19:23,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:24,213 INFO L124 PetriNetUnfolderBase]: 738/1533 cut-off events. [2024-10-24 12:19:24,214 INFO L125 PetriNetUnfolderBase]: For 3471/3653 co-relation queries the response was YES. [2024-10-24 12:19:24,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 1533 events. 738/1533 cut-off events. For 3471/3653 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10216 event pairs, 207 based on Foata normal form. 22/1378 useless extension candidates. Maximal degree in co-relation 4947. Up to 537 conditions per place. [2024-10-24 12:19:24,221 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 27 selfloop transitions, 10 changer transitions 27/85 dead transitions. [2024-10-24 12:19:24,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 607 flow [2024-10-24 12:19:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:19:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:19:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-10-24 12:19:24,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177606177606177 [2024-10-24 12:19:24,222 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 321 flow. Second operand 7 states and 160 transitions. [2024-10-24 12:19:24,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 607 flow [2024-10-24 12:19:24,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 555 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-10-24 12:19:24,231 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 306 flow [2024-10-24 12:19:24,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2024-10-24 12:19:24,232 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-10-24 12:19:24,233 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 306 flow [2024-10-24 12:19:24,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-10-24 12:19:24,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:24,233 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, 1, 1, 1] [2024-10-24 12:19:24,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:19:24,234 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:24,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:24,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1126652523, now seen corresponding path program 2 times [2024-10-24 12:19:24,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:24,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867827843] [2024-10-24 12:19:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:24,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:24,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867827843] [2024-10-24 12:19:24,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867827843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:24,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:24,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:19:24,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043153061] [2024-10-24 12:19:24,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:24,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:19:24,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:19:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:19:24,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:19:24,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:24,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:24,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:19:24,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:24,567 INFO L124 PetriNetUnfolderBase]: 473/1053 cut-off events. [2024-10-24 12:19:24,567 INFO L125 PetriNetUnfolderBase]: For 1949/1984 co-relation queries the response was YES. [2024-10-24 12:19:24,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1053 events. 473/1053 cut-off events. For 1949/1984 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6772 event pairs, 112 based on Foata normal form. 16/948 useless extension candidates. Maximal degree in co-relation 3195. Up to 395 conditions per place. [2024-10-24 12:19:24,574 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 20 selfloop transitions, 7 changer transitions 24/74 dead transitions. [2024-10-24 12:19:24,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 496 flow [2024-10-24 12:19:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:19:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 12:19:24,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-10-24 12:19:24,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-10-24 12:19:24,576 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 306 flow. Second operand 8 states and 176 transitions. [2024-10-24 12:19:24,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 496 flow [2024-10-24 12:19:24,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 456 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-10-24 12:19:24,580 INFO L231 Difference]: Finished difference. Result has 72 places, 46 transitions, 273 flow [2024-10-24 12:19:24,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=273, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2024-10-24 12:19:24,582 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-10-24 12:19:24,583 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 273 flow [2024-10-24 12:19:24,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:24,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:19:24,586 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, 1, 1, 1] [2024-10-24 12:19:24,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:19:24,586 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:19:24,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:19:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash 586361229, now seen corresponding path program 3 times [2024-10-24 12:19:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:19:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077778270] [2024-10-24 12:19:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:19:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:19:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:19:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:19:24,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:19:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077778270] [2024-10-24 12:19:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077778270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:19:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:19:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:19:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691592035] [2024-10-24 12:19:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:19:24,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:19:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:19:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:19:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:19:24,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:19:24,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:24,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:19:24,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:19:24,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:19:24,866 INFO L124 PetriNetUnfolderBase]: 322/722 cut-off events. [2024-10-24 12:19:24,866 INFO L125 PetriNetUnfolderBase]: For 1434/1451 co-relation queries the response was YES. [2024-10-24 12:19:24,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 722 events. 322/722 cut-off events. For 1434/1451 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4449 event pairs, 136 based on Foata normal form. 15/641 useless extension candidates. Maximal degree in co-relation 2199. Up to 395 conditions per place. [2024-10-24 12:19:24,870 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2024-10-24 12:19:24,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 53 transitions, 353 flow [2024-10-24 12:19:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:19:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:19:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-10-24 12:19:24,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5540540540540541 [2024-10-24 12:19:24,872 INFO L175 Difference]: Start difference. First operand has 72 places, 46 transitions, 273 flow. Second operand 6 states and 123 transitions. [2024-10-24 12:19:24,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 53 transitions, 353 flow [2024-10-24 12:19:24,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 320 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-10-24 12:19:24,877 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-10-24 12:19:24,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-10-24 12:19:24,878 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-10-24 12:19:24,878 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-10-24 12:19:24,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:19:24,881 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-24 12:19:24,881 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-24 12:19:24,882 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-24 12:19:24,882 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-24 12:19:24,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:19:24,882 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2024-10-24 12:19:24,885 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:19:24,885 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:19:24,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:19:24 BasicIcfg [2024-10-24 12:19:24,889 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:19:24,890 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:19:24,890 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:19:24,890 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:19:24,891 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:19:19" (3/4) ... [2024-10-24 12:19:24,892 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:19:24,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-24 12:19:24,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-24 12:19:24,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-24 12:19:24,898 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-10-24 12:19:24,898 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-24 12:19:24,898 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:19:24,899 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-24 12:19:24,965 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:19:24,966 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:19:24,966 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:19:24,967 INFO L158 Benchmark]: Toolchain (without parser) took 6175.93ms. Allocated memory was 184.5MB in the beginning and 377.5MB in the end (delta: 192.9MB). Free memory was 113.4MB in the beginning and 322.5MB in the end (delta: -209.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:19:24,967 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 184.5MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:19:24,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.28ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 144.3MB in the end (delta: -31.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2024-10-24 12:19:24,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.99ms. Allocated memory is still 184.5MB. Free memory was 144.3MB in the beginning and 143.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:19:24,968 INFO L158 Benchmark]: Boogie Preprocessor took 39.18ms. Allocated memory is still 184.5MB. Free memory was 142.2MB in the beginning and 141.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:19:24,968 INFO L158 Benchmark]: RCFGBuilder took 476.81ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 120.3MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-24 12:19:24,968 INFO L158 Benchmark]: TraceAbstraction took 4997.64ms. Allocated memory was 184.5MB in the beginning and 377.5MB in the end (delta: 192.9MB). Free memory was 120.3MB in the beginning and 326.7MB in the end (delta: -206.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:19:24,969 INFO L158 Benchmark]: Witness Printer took 76.44ms. Allocated memory is still 377.5MB. Free memory was 326.7MB in the beginning and 322.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:19:24,970 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 184.5MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.28ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 144.3MB in the end (delta: -31.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.99ms. Allocated memory is still 184.5MB. Free memory was 144.3MB in the beginning and 143.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.18ms. Allocated memory is still 184.5MB. Free memory was 142.2MB in the beginning and 141.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 476.81ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 120.3MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4997.64ms. Allocated memory was 184.5MB in the beginning and 377.5MB in the end (delta: 192.9MB). Free memory was 120.3MB in the beginning and 326.7MB in the end (delta: -206.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 76.44ms. Allocated memory is still 377.5MB. Free memory was 326.7MB in the beginning and 322.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 383 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 221 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 818 IncrementalHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 64 mSDtfsCounter, 818 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=321occurred in iteration=6, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 12:19:24,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE