./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c --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/weaver/chl-word-trans.wvr.c -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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:29:07,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:29:07,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:29:07,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:29:07,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:29:07,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:29:07,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:29:07,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:29:07,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:29:07,532 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:29:07,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:29:07,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:29:07,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:29:07,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:29:07,538 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:29:07,539 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:29:07,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:29:07,539 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:29:07,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:29:07,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:29:07,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:29:07,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:29:07,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:29:07,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:29:07,544 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:29:07,544 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:29:07,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:29:07,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:29:07,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:29:07,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:29:07,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:29:07,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:29:07,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:29:07,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:29:07,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:29:07,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:29:07,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:29:07,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:29:07,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:29:07,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:29:07,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:29:07,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:29:07,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-10-24 12:29:07,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:29:07,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:29:07,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:29:07,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:29:07,904 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:29:07,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-24 12:29:09,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:29:09,843 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:29:09,843 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-24 12:29:09,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc21bfb94/6fd1498aad874a34876ddcf91927fe7b/FLAG956085ff2 [2024-10-24 12:29:09,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc21bfb94/6fd1498aad874a34876ddcf91927fe7b [2024-10-24 12:29:09,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:29:09,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:29:09,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:29:09,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:29:09,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:29:09,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:29:09" (1/1) ... [2024-10-24 12:29:09,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56225378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:09, skipping insertion in model container [2024-10-24 12:29:09,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:29:09" (1/1) ... [2024-10-24 12:29:09,941 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:29:10,226 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/weaver/chl-word-trans.wvr.c[3331,3344] [2024-10-24 12:29:10,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:29:10,255 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:29:10,296 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/weaver/chl-word-trans.wvr.c[3331,3344] [2024-10-24 12:29:10,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:29:10,332 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:29:10,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10 WrapperNode [2024-10-24 12:29:10,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:29:10,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:29:10,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:29:10,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:29:10,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,386 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 165 [2024-10-24 12:29:10,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:29:10,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:29:10,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:29:10,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:29:10,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,441 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 12:29:10,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:29:10,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:29:10,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:29:10,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:29:10,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (1/1) ... [2024-10-24 12:29:10,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:29:10,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:29:10,510 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 12:29:10,513 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 12:29:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:29:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:29:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:29:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:29:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:29:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:29:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:29:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:29:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:29:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:29:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:29:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:29:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:29:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:29:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:29:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:29:10,565 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 12:29:10,694 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:29:10,697 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:29:11,071 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:29:11,071 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:29:11,376 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:29:11,376 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 12:29:11,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:29:11 BoogieIcfgContainer [2024-10-24 12:29:11,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:29:11,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:29:11,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:29:11,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:29:11,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:29:09" (1/3) ... [2024-10-24 12:29:11,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36682dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:29:11, skipping insertion in model container [2024-10-24 12:29:11,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:10" (2/3) ... [2024-10-24 12:29:11,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36682dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:29:11, skipping insertion in model container [2024-10-24 12:29:11,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:29:11" (3/3) ... [2024-10-24 12:29:11,388 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-10-24 12:29:11,405 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:29:11,405 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:29:11,405 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:29:11,466 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:29:11,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-10-24 12:29:11,546 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-10-24 12:29:11,546 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:29:11,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-24 12:29:11,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-10-24 12:29:11,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-10-24 12:29:11,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:29:11,572 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;@5ecf910, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:29:11,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:29:11,585 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:29:11,585 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-10-24 12:29:11,585 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:29:11,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:11,586 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] [2024-10-24 12:29:11,587 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 12:29:11,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2139187037, now seen corresponding path program 1 times [2024-10-24 12:29:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:11,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002710329] [2024-10-24 12:29:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:11,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:12,359 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 12:29:12,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:12,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002710329] [2024-10-24 12:29:12,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002710329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:12,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:12,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:12,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771281278] [2024-10-24 12:29:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:12,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:12,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:12,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:12,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:12,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:12,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:13,477 INFO L124 PetriNetUnfolderBase]: 4194/5650 cut-off events. [2024-10-24 12:29:13,477 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2024-10-24 12:29:13,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11530 conditions, 5650 events. 4194/5650 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23579 event pairs, 1230 based on Foata normal form. 1/4162 useless extension candidates. Maximal degree in co-relation 10708. Up to 2621 conditions per place. [2024-10-24 12:29:13,526 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 93 selfloop transitions, 13 changer transitions 1/108 dead transitions. [2024-10-24 12:29:13,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 108 transitions, 475 flow [2024-10-24 12:29:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-24 12:29:13,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-24 12:29:13,541 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 5 states and 128 transitions. [2024-10-24 12:29:13,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 108 transitions, 475 flow [2024-10-24 12:29:13,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 108 transitions, 445 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 12:29:13,554 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 174 flow [2024-10-24 12:29:13,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2024-10-24 12:29:13,560 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-10-24 12:29:13,561 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 174 flow [2024-10-24 12:29:13,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:13,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:13,561 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] [2024-10-24 12:29:13,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:29:13,562 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 12:29:13,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash -251997727, now seen corresponding path program 2 times [2024-10-24 12:29:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484155289] [2024-10-24 12:29:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:13,831 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 12:29:13,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:13,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484155289] [2024-10-24 12:29:13,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484155289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:13,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175262063] [2024-10-24 12:29:13,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:13,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:13,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:13,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:13,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:13,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:13,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:14,686 INFO L124 PetriNetUnfolderBase]: 5362/7396 cut-off events. [2024-10-24 12:29:14,687 INFO L125 PetriNetUnfolderBase]: For 1555/1555 co-relation queries the response was YES. [2024-10-24 12:29:14,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 7396 events. 5362/7396 cut-off events. For 1555/1555 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 34845 event pairs, 2679 based on Foata normal form. 1/6215 useless extension candidates. Maximal degree in co-relation 11899. Up to 5325 conditions per place. [2024-10-24 12:29:14,746 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 107 selfloop transitions, 7 changer transitions 3/118 dead transitions. [2024-10-24 12:29:14,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 118 transitions, 596 flow [2024-10-24 12:29:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-24 12:29:14,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-10-24 12:29:14,751 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 174 flow. Second operand 5 states and 123 transitions. [2024-10-24 12:29:14,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 118 transitions, 596 flow [2024-10-24 12:29:14,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 118 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:29:14,767 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 239 flow [2024-10-24 12:29:14,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-10-24 12:29:14,768 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-10-24 12:29:14,768 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 239 flow [2024-10-24 12:29:14,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:14,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:14,769 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] [2024-10-24 12:29:14,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:29:14,769 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 12:29:14,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash -864762781, now seen corresponding path program 3 times [2024-10-24 12:29:14,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:14,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224366728] [2024-10-24 12:29:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:14,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:14,981 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 12:29:14,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:14,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224366728] [2024-10-24 12:29:14,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224366728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:14,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:14,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:14,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769765768] [2024-10-24 12:29:14,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:14,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:14,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:14,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:14,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:14,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:14,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:16,094 INFO L124 PetriNetUnfolderBase]: 6533/9128 cut-off events. [2024-10-24 12:29:16,095 INFO L125 PetriNetUnfolderBase]: For 4945/4945 co-relation queries the response was YES. [2024-10-24 12:29:16,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22776 conditions, 9128 events. 6533/9128 cut-off events. For 4945/4945 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44925 event pairs, 3289 based on Foata normal form. 1/7963 useless extension candidates. Maximal degree in co-relation 16270. Up to 5817 conditions per place. [2024-10-24 12:29:16,172 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 104 selfloop transitions, 17 changer transitions 1/123 dead transitions. [2024-10-24 12:29:16,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 685 flow [2024-10-24 12:29:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-24 12:29:16,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-10-24 12:29:16,175 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 239 flow. Second operand 5 states and 129 transitions. [2024-10-24 12:29:16,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 685 flow [2024-10-24 12:29:16,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 675 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:16,297 INFO L231 Difference]: Finished difference. Result has 57 places, 70 transitions, 377 flow [2024-10-24 12:29:16,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=57, PETRI_TRANSITIONS=70} [2024-10-24 12:29:16,300 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-10-24 12:29:16,300 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 70 transitions, 377 flow [2024-10-24 12:29:16,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:16,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:16,301 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] [2024-10-24 12:29:16,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:29:16,301 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 12:29:16,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:16,302 INFO L85 PathProgramCache]: Analyzing trace with hash 357230847, now seen corresponding path program 4 times [2024-10-24 12:29:16,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:16,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027520435] [2024-10-24 12:29:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:16,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:16,506 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 12:29:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027520435] [2024-10-24 12:29:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027520435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030254357] [2024-10-24 12:29:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:16,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:16,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:16,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:16,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:16,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:16,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:17,595 INFO L124 PetriNetUnfolderBase]: 7280/10189 cut-off events. [2024-10-24 12:29:17,595 INFO L125 PetriNetUnfolderBase]: For 11173/11173 co-relation queries the response was YES. [2024-10-24 12:29:17,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27719 conditions, 10189 events. 7280/10189 cut-off events. For 11173/11173 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 52283 event pairs, 3488 based on Foata normal form. 1/8862 useless extension candidates. Maximal degree in co-relation 20100. Up to 6616 conditions per place. [2024-10-24 12:29:17,674 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 124 selfloop transitions, 22 changer transitions 1/148 dead transitions. [2024-10-24 12:29:17,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 987 flow [2024-10-24 12:29:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-24 12:29:17,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-10-24 12:29:17,678 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 377 flow. Second operand 5 states and 131 transitions. [2024-10-24 12:29:17,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 987 flow [2024-10-24 12:29:17,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 947 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-10-24 12:29:17,768 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 591 flow [2024-10-24 12:29:17,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2024-10-24 12:29:17,771 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-10-24 12:29:17,771 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 591 flow [2024-10-24 12:29:17,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:17,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:17,772 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] [2024-10-24 12:29:17,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:29:17,772 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 12:29:17,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2126149539, now seen corresponding path program 5 times [2024-10-24 12:29:17,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798681542] [2024-10-24 12:29:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:18,009 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 12:29:18,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:18,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798681542] [2024-10-24 12:29:18,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798681542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:18,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:18,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:18,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609741090] [2024-10-24 12:29:18,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:18,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:18,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:18,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:18,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:18,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:18,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 591 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:18,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:18,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:18,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:19,297 INFO L124 PetriNetUnfolderBase]: 7280/10187 cut-off events. [2024-10-24 12:29:19,298 INFO L125 PetriNetUnfolderBase]: For 16282/16282 co-relation queries the response was YES. [2024-10-24 12:29:19,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29616 conditions, 10187 events. 7280/10187 cut-off events. For 16282/16282 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51714 event pairs, 3752 based on Foata normal form. 1/9128 useless extension candidates. Maximal degree in co-relation 28424. Up to 6705 conditions per place. [2024-10-24 12:29:19,378 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 123 selfloop transitions, 11 changer transitions 3/138 dead transitions. [2024-10-24 12:29:19,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 138 transitions, 1037 flow [2024-10-24 12:29:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-10-24 12:29:19,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-10-24 12:29:19,381 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 591 flow. Second operand 5 states and 121 transitions. [2024-10-24 12:29:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 138 transitions, 1037 flow [2024-10-24 12:29:19,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1029 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:19,453 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 616 flow [2024-10-24 12:29:19,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2024-10-24 12:29:19,455 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-10-24 12:29:19,456 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 616 flow [2024-10-24 12:29:19,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:19,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:19,457 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] [2024-10-24 12:29:19,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:29:19,457 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 12:29:19,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1870528389, now seen corresponding path program 6 times [2024-10-24 12:29:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:19,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555259132] [2024-10-24 12:29:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:19,794 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 12:29:19,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:19,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555259132] [2024-10-24 12:29:19,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555259132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:19,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379761349] [2024-10-24 12:29:19,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:19,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:19,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:19,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:19,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:19,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:19,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:20,929 INFO L124 PetriNetUnfolderBase]: 7463/10420 cut-off events. [2024-10-24 12:29:20,930 INFO L125 PetriNetUnfolderBase]: For 19317/19317 co-relation queries the response was YES. [2024-10-24 12:29:20,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30746 conditions, 10420 events. 7463/10420 cut-off events. For 19317/19317 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 52850 event pairs, 2328 based on Foata normal form. 1/9332 useless extension candidates. Maximal degree in co-relation 30154. Up to 4720 conditions per place. [2024-10-24 12:29:21,022 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 105 selfloop transitions, 45 changer transitions 1/152 dead transitions. [2024-10-24 12:29:21,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 152 transitions, 1179 flow [2024-10-24 12:29:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-24 12:29:21,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-24 12:29:21,024 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 616 flow. Second operand 5 states and 128 transitions. [2024-10-24 12:29:21,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 152 transitions, 1179 flow [2024-10-24 12:29:21,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 152 transitions, 1156 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-24 12:29:21,099 INFO L231 Difference]: Finished difference. Result has 73 places, 100 transitions, 859 flow [2024-10-24 12:29:21,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2024-10-24 12:29:21,101 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-10-24 12:29:21,102 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 859 flow [2024-10-24 12:29:21,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 12:29:21,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:21,103 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] [2024-10-24 12:29:21,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:29:21,103 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 12:29:21,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:21,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1888763971, now seen corresponding path program 1 times [2024-10-24 12:29:21,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:21,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496842351] [2024-10-24 12:29:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:21,311 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 12:29:21,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496842351] [2024-10-24 12:29:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496842351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:21,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:21,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865743118] [2024-10-24 12:29:21,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:21,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:29:21,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:21,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:29:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:29:21,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:21,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 12:29:21,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:21,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:21,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:22,967 INFO L124 PetriNetUnfolderBase]: 13070/18041 cut-off events. [2024-10-24 12:29:22,967 INFO L125 PetriNetUnfolderBase]: For 44989/44989 co-relation queries the response was YES. [2024-10-24 12:29:23,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58616 conditions, 18041 events. 13070/18041 cut-off events. For 44989/44989 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 98471 event pairs, 5015 based on Foata normal form. 5/16139 useless extension candidates. Maximal degree in co-relation 49617. Up to 7331 conditions per place. [2024-10-24 12:29:23,107 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 164 selfloop transitions, 23 changer transitions 8/196 dead transitions. [2024-10-24 12:29:23,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 196 transitions, 1880 flow [2024-10-24 12:29:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:29:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:29:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-10-24 12:29:23,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-10-24 12:29:23,109 INFO L175 Difference]: Start difference. First operand has 73 places, 100 transitions, 859 flow. Second operand 6 states and 135 transitions. [2024-10-24 12:29:23,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 196 transitions, 1880 flow [2024-10-24 12:29:23,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 196 transitions, 1794 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:23,335 INFO L231 Difference]: Finished difference. Result has 81 places, 112 transitions, 988 flow [2024-10-24 12:29:23,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=81, PETRI_TRANSITIONS=112} [2024-10-24 12:29:23,339 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-10-24 12:29:23,339 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 112 transitions, 988 flow [2024-10-24 12:29:23,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 12:29:23,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:23,340 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] [2024-10-24 12:29:23,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:29:23,340 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 12:29:23,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 428945330, now seen corresponding path program 1 times [2024-10-24 12:29:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:23,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247879645] [2024-10-24 12:29:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:23,536 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 12:29:23,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:23,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247879645] [2024-10-24 12:29:23,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247879645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:23,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:23,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:23,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336468800] [2024-10-24 12:29:23,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:23,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:29:23,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:23,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:29:23,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:29:23,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:23,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 112 transitions, 988 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 12:29:23,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:23,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:23,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:26,309 INFO L124 PetriNetUnfolderBase]: 20914/28531 cut-off events. [2024-10-24 12:29:26,309 INFO L125 PetriNetUnfolderBase]: For 80443/80443 co-relation queries the response was YES. [2024-10-24 12:29:26,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96856 conditions, 28531 events. 20914/28531 cut-off events. For 80443/80443 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 158238 event pairs, 8224 based on Foata normal form. 5/25421 useless extension candidates. Maximal degree in co-relation 87865. Up to 10761 conditions per place. [2024-10-24 12:29:26,551 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 181 selfloop transitions, 25 changer transitions 41/248 dead transitions. [2024-10-24 12:29:26,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 248 transitions, 2514 flow [2024-10-24 12:29:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:29:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:29:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-10-24 12:29:26,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-24 12:29:26,554 INFO L175 Difference]: Start difference. First operand has 81 places, 112 transitions, 988 flow. Second operand 6 states and 154 transitions. [2024-10-24 12:29:26,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 248 transitions, 2514 flow [2024-10-24 12:29:27,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 248 transitions, 2469 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:27,115 INFO L231 Difference]: Finished difference. Result has 89 places, 124 transitions, 1167 flow [2024-10-24 12:29:27,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1167, PETRI_PLACES=89, PETRI_TRANSITIONS=124} [2024-10-24 12:29:27,116 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-10-24 12:29:27,116 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 124 transitions, 1167 flow [2024-10-24 12:29:27,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 12:29:27,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:27,117 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] [2024-10-24 12:29:27,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:29:27,117 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 12:29:27,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash -526697336, now seen corresponding path program 1 times [2024-10-24 12:29:27,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:27,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020151947] [2024-10-24 12:29:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:27,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:27,254 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 12:29:27,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020151947] [2024-10-24 12:29:27,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020151947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:27,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:27,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:27,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540965861] [2024-10-24 12:29:27,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:27,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:27,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:27,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:27,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:27,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 124 transitions, 1167 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:27,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:27,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:27,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:30,073 INFO L124 PetriNetUnfolderBase]: 19486/26684 cut-off events. [2024-10-24 12:29:30,073 INFO L125 PetriNetUnfolderBase]: For 82185/82185 co-relation queries the response was YES. [2024-10-24 12:29:30,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92886 conditions, 26684 events. 19486/26684 cut-off events. For 82185/82185 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 145791 event pairs, 5820 based on Foata normal form. 1/23742 useless extension candidates. Maximal degree in co-relation 92762. Up to 13657 conditions per place. [2024-10-24 12:29:30,495 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 185 selfloop transitions, 23 changer transitions 17/226 dead transitions. [2024-10-24 12:29:30,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 226 transitions, 2407 flow [2024-10-24 12:29:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-24 12:29:30,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-10-24 12:29:30,497 INFO L175 Difference]: Start difference. First operand has 89 places, 124 transitions, 1167 flow. Second operand 5 states and 127 transitions. [2024-10-24 12:29:30,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 226 transitions, 2407 flow [2024-10-24 12:29:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 226 transitions, 2352 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-24 12:29:30,874 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1366 flow [2024-10-24 12:29:30,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1366, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-10-24 12:29:30,876 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-10-24 12:29:30,876 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1366 flow [2024-10-24 12:29:30,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:30,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:30,877 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] [2024-10-24 12:29:30,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:29:30,877 INFO L396 AbstractCegarLoop]: === Iteration 10 === 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 12:29:30,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1684842140, now seen corresponding path program 2 times [2024-10-24 12:29:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864340348] [2024-10-24 12:29:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:31,021 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 12:29:31,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:31,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864340348] [2024-10-24 12:29:31,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864340348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:31,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:31,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470689213] [2024-10-24 12:29:31,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:31,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:31,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:31,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1366 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:31,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:31,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:31,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:33,774 INFO L124 PetriNetUnfolderBase]: 19241/26337 cut-off events. [2024-10-24 12:29:33,774 INFO L125 PetriNetUnfolderBase]: For 108085/108085 co-relation queries the response was YES. [2024-10-24 12:29:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92846 conditions, 26337 events. 19241/26337 cut-off events. For 108085/108085 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 144446 event pairs, 10629 based on Foata normal form. 1/23879 useless extension candidates. Maximal degree in co-relation 84700. Up to 19211 conditions per place. [2024-10-24 12:29:34,032 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 148 selfloop transitions, 20 changer transitions 17/186 dead transitions. [2024-10-24 12:29:34,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 186 transitions, 1916 flow [2024-10-24 12:29:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-24 12:29:34,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2024-10-24 12:29:34,034 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 1366 flow. Second operand 5 states and 122 transitions. [2024-10-24 12:29:34,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 186 transitions, 1916 flow [2024-10-24 12:29:34,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 186 transitions, 1875 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:34,614 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1327 flow [2024-10-24 12:29:34,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1327, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2024-10-24 12:29:34,615 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-10-24 12:29:34,615 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1327 flow [2024-10-24 12:29:34,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:34,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:34,621 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] [2024-10-24 12:29:34,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:29:34,622 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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 12:29:34,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:34,622 INFO L85 PathProgramCache]: Analyzing trace with hash 668742952, now seen corresponding path program 3 times [2024-10-24 12:29:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:34,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434822704] [2024-10-24 12:29:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:34,783 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 12:29:34,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434822704] [2024-10-24 12:29:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434822704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:34,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864567236] [2024-10-24 12:29:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:34,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:34,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:34,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1327 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:34,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:34,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:34,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:37,961 INFO L124 PetriNetUnfolderBase]: 19318/26435 cut-off events. [2024-10-24 12:29:37,961 INFO L125 PetriNetUnfolderBase]: For 110540/110540 co-relation queries the response was YES. [2024-10-24 12:29:38,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93579 conditions, 26435 events. 19318/26435 cut-off events. For 110540/110540 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 145010 event pairs, 10350 based on Foata normal form. 1/23958 useless extension candidates. Maximal degree in co-relation 93493. Up to 19211 conditions per place. [2024-10-24 12:29:38,244 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 163 selfloop transitions, 26 changer transitions 13/203 dead transitions. [2024-10-24 12:29:38,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 203 transitions, 2098 flow [2024-10-24 12:29:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-24 12:29:38,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-10-24 12:29:38,246 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1327 flow. Second operand 5 states and 131 transitions. [2024-10-24 12:29:38,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 203 transitions, 2098 flow [2024-10-24 12:29:38,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 203 transitions, 2052 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-24 12:29:38,898 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 1343 flow [2024-10-24 12:29:38,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1343, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2024-10-24 12:29:38,899 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-10-24 12:29:38,899 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 1343 flow [2024-10-24 12:29:38,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:38,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:38,900 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] [2024-10-24 12:29:38,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:29:38,900 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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 12:29:38,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:38,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2097724826, now seen corresponding path program 4 times [2024-10-24 12:29:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130726388] [2024-10-24 12:29:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:38,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:39,024 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 12:29:39,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130726388] [2024-10-24 12:29:39,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130726388] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:39,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:39,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:39,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995317814] [2024-10-24 12:29:39,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:39,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:39,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:39,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:39,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 1343 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:39,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:39,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:39,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:41,926 INFO L124 PetriNetUnfolderBase]: 19053/26048 cut-off events. [2024-10-24 12:29:41,926 INFO L125 PetriNetUnfolderBase]: For 115844/115844 co-relation queries the response was YES. [2024-10-24 12:29:42,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93933 conditions, 26048 events. 19053/26048 cut-off events. For 115844/115844 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 141807 event pairs, 11146 based on Foata normal form. 1/23582 useless extension candidates. Maximal degree in co-relation 88179. Up to 21122 conditions per place. [2024-10-24 12:29:42,179 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 153 selfloop transitions, 10 changer transitions 19/183 dead transitions. [2024-10-24 12:29:42,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 183 transitions, 1862 flow [2024-10-24 12:29:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-24 12:29:42,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-10-24 12:29:42,181 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 1343 flow. Second operand 5 states and 120 transitions. [2024-10-24 12:29:42,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 183 transitions, 1862 flow [2024-10-24 12:29:42,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 1810 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-10-24 12:29:42,787 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1229 flow [2024-10-24 12:29:42,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1229, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-10-24 12:29:42,788 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-10-24 12:29:42,788 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1229 flow [2024-10-24 12:29:42,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:42,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:42,788 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] [2024-10-24 12:29:42,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 12:29:42,789 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 12:29:42,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 817982174, now seen corresponding path program 5 times [2024-10-24 12:29:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129011115] [2024-10-24 12:29:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:43,166 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 12:29:43,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129011115] [2024-10-24 12:29:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129011115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:43,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:43,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200944095] [2024-10-24 12:29:43,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:43,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:43,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:43,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1229 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:43,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:43,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:43,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:46,144 INFO L124 PetriNetUnfolderBase]: 19392/26564 cut-off events. [2024-10-24 12:29:46,145 INFO L125 PetriNetUnfolderBase]: For 111963/111963 co-relation queries the response was YES. [2024-10-24 12:29:46,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95459 conditions, 26564 events. 19392/26564 cut-off events. For 111963/111963 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 145015 event pairs, 5939 based on Foata normal form. 1/24061 useless extension candidates. Maximal degree in co-relation 95383. Up to 14665 conditions per place. [2024-10-24 12:29:46,438 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 180 selfloop transitions, 15 changer transitions 10/206 dead transitions. [2024-10-24 12:29:46,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 206 transitions, 2076 flow [2024-10-24 12:29:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-24 12:29:46,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-10-24 12:29:46,440 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1229 flow. Second operand 5 states and 127 transitions. [2024-10-24 12:29:46,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 206 transitions, 2076 flow [2024-10-24 12:29:46,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 206 transitions, 2034 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-10-24 12:29:46,994 INFO L231 Difference]: Finished difference. Result has 101 places, 136 transitions, 1340 flow [2024-10-24 12:29:46,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1340, PETRI_PLACES=101, PETRI_TRANSITIONS=136} [2024-10-24 12:29:46,995 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-10-24 12:29:46,995 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 136 transitions, 1340 flow [2024-10-24 12:29:46,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:46,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:46,995 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] [2024-10-24 12:29:46,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 12:29:46,996 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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 12:29:46,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:46,996 INFO L85 PathProgramCache]: Analyzing trace with hash -353221696, now seen corresponding path program 6 times [2024-10-24 12:29:46,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:46,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596198231] [2024-10-24 12:29:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:47,121 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 12:29:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596198231] [2024-10-24 12:29:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596198231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:47,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:47,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:47,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682943190] [2024-10-24 12:29:47,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:47,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:47,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:47,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 136 transitions, 1340 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:47,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:47,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:47,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:50,224 INFO L124 PetriNetUnfolderBase]: 19393/26568 cut-off events. [2024-10-24 12:29:50,225 INFO L125 PetriNetUnfolderBase]: For 124989/124989 co-relation queries the response was YES. [2024-10-24 12:29:50,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97459 conditions, 26568 events. 19393/26568 cut-off events. For 124989/124989 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 145505 event pairs, 11171 based on Foata normal form. 1/24052 useless extension candidates. Maximal degree in co-relation 72860. Up to 21122 conditions per place. [2024-10-24 12:29:50,471 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 174 selfloop transitions, 17 changer transitions 10/202 dead transitions. [2024-10-24 12:29:50,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 202 transitions, 2016 flow [2024-10-24 12:29:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-24 12:29:50,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-24 12:29:50,472 INFO L175 Difference]: Start difference. First operand has 101 places, 136 transitions, 1340 flow. Second operand 5 states and 128 transitions. [2024-10-24 12:29:50,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 202 transitions, 2016 flow [2024-10-24 12:29:50,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 1999 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:50,863 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1346 flow [2024-10-24 12:29:50,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1346, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2024-10-24 12:29:50,864 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-10-24 12:29:50,864 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1346 flow [2024-10-24 12:29:50,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:29:50,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:50,865 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] [2024-10-24 12:29:50,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 12:29:50,865 INFO L396 AbstractCegarLoop]: === Iteration 15 === 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 12:29:50,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:50,866 INFO L85 PathProgramCache]: Analyzing trace with hash -254441475, now seen corresponding path program 1 times [2024-10-24 12:29:50,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:50,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742746346] [2024-10-24 12:29:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:29:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742746346] [2024-10-24 12:29:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742746346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:50,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:50,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:50,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158807124] [2024-10-24 12:29:50,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:50,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:50,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:50,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:50,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1346 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:29:50,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:50,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:50,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:54,184 INFO L124 PetriNetUnfolderBase]: 20371/28035 cut-off events. [2024-10-24 12:29:54,184 INFO L125 PetriNetUnfolderBase]: For 140437/140437 co-relation queries the response was YES. [2024-10-24 12:29:54,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104266 conditions, 28035 events. 20371/28035 cut-off events. For 140437/140437 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 161994 event pairs, 5690 based on Foata normal form. 1/25388 useless extension candidates. Maximal degree in co-relation 78562. Up to 14385 conditions per place. [2024-10-24 12:29:54,502 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 205 selfloop transitions, 18 changer transitions 3/227 dead transitions. [2024-10-24 12:29:54,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 227 transitions, 2412 flow [2024-10-24 12:29:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-10-24 12:29:54,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-24 12:29:54,504 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1346 flow. Second operand 5 states and 133 transitions. [2024-10-24 12:29:54,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 227 transitions, 2412 flow [2024-10-24 12:29:54,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 227 transitions, 2354 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:54,881 INFO L231 Difference]: Finished difference. Result has 110 places, 149 transitions, 1583 flow [2024-10-24 12:29:54,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1583, PETRI_PLACES=110, PETRI_TRANSITIONS=149} [2024-10-24 12:29:54,882 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-10-24 12:29:54,882 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 149 transitions, 1583 flow [2024-10-24 12:29:54,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:29:54,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:54,883 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] [2024-10-24 12:29:54,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 12:29:54,883 INFO L396 AbstractCegarLoop]: === Iteration 16 === 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 12:29:54,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:54,883 INFO L85 PathProgramCache]: Analyzing trace with hash -456908967, now seen corresponding path program 2 times [2024-10-24 12:29:54,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264766987] [2024-10-24 12:29:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:29:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264766987] [2024-10-24 12:29:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264766987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:55,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567132394] [2024-10-24 12:29:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:55,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:55,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:55,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:55,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:55,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 149 transitions, 1583 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:29:55,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:55,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:58,408 INFO L124 PetriNetUnfolderBase]: 20338/27999 cut-off events. [2024-10-24 12:29:58,408 INFO L125 PetriNetUnfolderBase]: For 148837/148837 co-relation queries the response was YES. [2024-10-24 12:29:58,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105771 conditions, 27999 events. 20338/27999 cut-off events. For 148837/148837 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 156330 event pairs, 11171 based on Foata normal form. 1/25353 useless extension candidates. Maximal degree in co-relation 100069. Up to 21122 conditions per place. [2024-10-24 12:29:58,747 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 190 selfloop transitions, 26 changer transitions 3/220 dead transitions. [2024-10-24 12:29:58,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 220 transitions, 2390 flow [2024-10-24 12:29:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-10-24 12:29:58,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-10-24 12:29:58,749 INFO L175 Difference]: Start difference. First operand has 110 places, 149 transitions, 1583 flow. Second operand 5 states and 130 transitions. [2024-10-24 12:29:58,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 220 transitions, 2390 flow [2024-10-24 12:29:59,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 220 transitions, 2360 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-24 12:29:59,285 INFO L231 Difference]: Finished difference. Result has 116 places, 153 transitions, 1716 flow [2024-10-24 12:29:59,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1716, PETRI_PLACES=116, PETRI_TRANSITIONS=153} [2024-10-24 12:29:59,286 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-10-24 12:29:59,286 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 153 transitions, 1716 flow [2024-10-24 12:29:59,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:29:59,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:59,287 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] [2024-10-24 12:29:59,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 12:29:59,287 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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 12:29:59,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 623244311, now seen corresponding path program 3 times [2024-10-24 12:29:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:59,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036220571] [2024-10-24 12:29:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:29:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:59,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036220571] [2024-10-24 12:29:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036220571] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133000805] [2024-10-24 12:29:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:59,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:59,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:59,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:59,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 153 transitions, 1716 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:29:59,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:59,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:03,675 INFO L124 PetriNetUnfolderBase]: 25978/35864 cut-off events. [2024-10-24 12:30:03,675 INFO L125 PetriNetUnfolderBase]: For 199528/199528 co-relation queries the response was YES. [2024-10-24 12:30:04,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136061 conditions, 35864 events. 25978/35864 cut-off events. For 199528/199528 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 214598 event pairs, 3467 based on Foata normal form. 1/32439 useless extension candidates. Maximal degree in co-relation 131658. Up to 11598 conditions per place. [2024-10-24 12:30:04,156 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 243 selfloop transitions, 45 changer transitions 4/293 dead transitions. [2024-10-24 12:30:04,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 293 transitions, 3349 flow [2024-10-24 12:30:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:30:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:30:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-10-24 12:30:04,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-10-24 12:30:04,158 INFO L175 Difference]: Start difference. First operand has 116 places, 153 transitions, 1716 flow. Second operand 6 states and 171 transitions. [2024-10-24 12:30:04,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 293 transitions, 3349 flow [2024-10-24 12:30:04,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 293 transitions, 3315 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-24 12:30:04,713 INFO L231 Difference]: Finished difference. Result has 124 places, 174 transitions, 2132 flow [2024-10-24 12:30:04,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2132, PETRI_PLACES=124, PETRI_TRANSITIONS=174} [2024-10-24 12:30:04,714 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-10-24 12:30:04,714 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 174 transitions, 2132 flow [2024-10-24 12:30:04,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:30:04,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:04,714 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] [2024-10-24 12:30:04,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 12:30:04,714 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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 12:30:04,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1326802223, now seen corresponding path program 4 times [2024-10-24 12:30:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147160800] [2024-10-24 12:30:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:04,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147160800] [2024-10-24 12:30:04,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147160800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:04,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:30:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189589023] [2024-10-24 12:30:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:04,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:30:04,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:30:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:30:04,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:30:04,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 174 transitions, 2132 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:30:04,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:04,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:30:04,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:10,121 INFO L124 PetriNetUnfolderBase]: 26597/36749 cut-off events. [2024-10-24 12:30:10,122 INFO L125 PetriNetUnfolderBase]: For 237749/237749 co-relation queries the response was YES. [2024-10-24 12:30:10,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147976 conditions, 36749 events. 26597/36749 cut-off events. For 237749/237749 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 218550 event pairs, 6793 based on Foata normal form. 1/33192 useless extension candidates. Maximal degree in co-relation 143558. Up to 16510 conditions per place. [2024-10-24 12:30:10,571 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 237 selfloop transitions, 35 changer transitions 16/289 dead transitions. [2024-10-24 12:30:10,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 289 transitions, 3561 flow [2024-10-24 12:30:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:30:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:30:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-10-24 12:30:10,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-10-24 12:30:10,573 INFO L175 Difference]: Start difference. First operand has 124 places, 174 transitions, 2132 flow. Second operand 6 states and 160 transitions. [2024-10-24 12:30:10,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 289 transitions, 3561 flow [2024-10-24 12:30:12,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 289 transitions, 3497 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-10-24 12:30:12,244 INFO L231 Difference]: Finished difference. Result has 133 places, 179 transitions, 2280 flow [2024-10-24 12:30:12,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2280, PETRI_PLACES=133, PETRI_TRANSITIONS=179} [2024-10-24 12:30:12,245 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-10-24 12:30:12,245 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 179 transitions, 2280 flow [2024-10-24 12:30:12,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:30:12,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:12,245 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] [2024-10-24 12:30:12,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 12:30:12,246 INFO L396 AbstractCegarLoop]: === Iteration 19 === 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 12:30:12,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1128182105, now seen corresponding path program 5 times [2024-10-24 12:30:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:12,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741881967] [2024-10-24 12:30:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741881967] [2024-10-24 12:30:12,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741881967] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:12,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:12,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:30:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538352697] [2024-10-24 12:30:12,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:12,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:30:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:30:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:30:12,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:30:12,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 179 transitions, 2280 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 12:30:12,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:12,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:30:12,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand