./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/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:28:36,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:28:36,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:28:36,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:28:36,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:28:36,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:28:36,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:28:36,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:28:36,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:28:36,485 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:28:36,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:28:36,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:28:36,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:28:36,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:28:36,490 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:28:36,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:28:36,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:28:36,491 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:28:36,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:28:36,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:28:36,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:28:36,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:28:36,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:28:36,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:28:36,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:28:36,497 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:28:36,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:28:36,497 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:28:36,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:28:36,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:28:36,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:28:36,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:28:36,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:28:36,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:28:36,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:28:36,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:28:36,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:28:36,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:28:36,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:28:36,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:28:36,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:28:36,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:28:36,501 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2024-10-11 14:28:36,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:28:36,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:28:36,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:28:36,783 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:28:36,783 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:28:36,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2024-10-11 14:28:38,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:28:38,509 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:28:38,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2024-10-11 14:28:38,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/acbd4752c/3e81bc1265ff4d27878b0062bc415ea0/FLAG971910a29 [2024-10-11 14:28:38,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/acbd4752c/3e81bc1265ff4d27878b0062bc415ea0 [2024-10-11 14:28:38,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:28:38,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:28:38,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:28:38,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:28:38,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:28:38,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c29048b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38, skipping insertion in model container [2024-10-11 14:28:38,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,588 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:28:38,806 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/parallel-bakery-3.wvr.c[5465,5478] [2024-10-11 14:28:38,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:28:38,822 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:28:38,850 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/parallel-bakery-3.wvr.c[5465,5478] [2024-10-11 14:28:38,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:28:38,868 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:28:38,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38 WrapperNode [2024-10-11 14:28:38,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:28:38,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:28:38,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:28:38,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:28:38,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,885 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,912 INFO L138 Inliner]: procedures = 21, calls = 95, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 252 [2024-10-11 14:28:38,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:28:38,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:28:38,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:28:38,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:28:38,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,950 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:28:38,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:28:38,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:28:38,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:28:38,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:28:38,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (1/1) ... [2024-10-11 14:28:38,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:28:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:39,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:28:39,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:28:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:28:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:28:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:28:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:28:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:28:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:28:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:28:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:28:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:28:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:28:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:28:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:28:39,080 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:28:39,199 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:28:39,202 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:28:39,619 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:28:39,619 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:28:39,920 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:28:39,920 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:28:39,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:39 BoogieIcfgContainer [2024-10-11 14:28:39,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:28:39,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:28:39,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:28:39,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:28:39,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:38" (1/3) ... [2024-10-11 14:28:39,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182643f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:39, skipping insertion in model container [2024-10-11 14:28:39,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:38" (2/3) ... [2024-10-11 14:28:39,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182643f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:39, skipping insertion in model container [2024-10-11 14:28:39,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:39" (3/3) ... [2024-10-11 14:28:39,930 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2024-10-11 14:28:39,947 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:28:39,948 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:28:39,948 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:28:39,997 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:28:40,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 58 transitions, 137 flow [2024-10-11 14:28:40,087 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2024-10-11 14:28:40,088 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:28:40,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 0/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-11 14:28:40,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 58 transitions, 137 flow [2024-10-11 14:28:40,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 54 transitions, 126 flow [2024-10-11 14:28:40,106 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:28:40,113 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;@37f69e76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:28:40,114 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:28:40,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:28:40,140 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2024-10-11 14:28:40,140 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:28:40,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:40,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:28:40,142 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)] === [2024-10-11 14:28:40,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:40,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1298372646, now seen corresponding path program 1 times [2024-10-11 14:28:40,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:40,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096993358] [2024-10-11 14:28:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:40,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096993358] [2024-10-11 14:28:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096993358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:40,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:28:40,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947265454] [2024-10-11 14:28:40,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:40,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:28:40,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:28:40,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:28:41,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-10-11 14:28:41,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 126 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:41,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:41,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-10-11 14:28:41,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:42,450 INFO L124 PetriNetUnfolderBase]: 4441/7447 cut-off events. [2024-10-11 14:28:42,452 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-10-11 14:28:42,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 7447 events. 4441/7447 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 50330 event pairs, 1599 based on Foata normal form. 1/7359 useless extension candidates. Maximal degree in co-relation 13435. Up to 2233 conditions per place. [2024-10-11 14:28:42,513 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 135 selfloop transitions, 15 changer transitions 18/187 dead transitions. [2024-10-11 14:28:42,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 187 transitions, 782 flow [2024-10-11 14:28:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 411 transitions. [2024-10-11 14:28:42,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6442006269592476 [2024-10-11 14:28:42,535 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 126 flow. Second operand 11 states and 411 transitions. [2024-10-11 14:28:42,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 187 transitions, 782 flow [2024-10-11 14:28:42,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 187 transitions, 734 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:28:42,564 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 206 flow [2024-10-11 14:28:42,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=206, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-10-11 14:28:42,571 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2024-10-11 14:28:42,573 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 206 flow [2024-10-11 14:28:42,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:42,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:42,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:28:42,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:28:42,575 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)] === [2024-10-11 14:28:42,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash -615578906, now seen corresponding path program 2 times [2024-10-11 14:28:42,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:42,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169973798] [2024-10-11 14:28:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:42,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:43,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169973798] [2024-10-11 14:28:43,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169973798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:43,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:43,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:28:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157256282] [2024-10-11 14:28:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:43,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:28:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:28:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:28:43,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-10-11 14:28:43,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:43,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:43,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-10-11 14:28:43,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:44,643 INFO L124 PetriNetUnfolderBase]: 6540/10834 cut-off events. [2024-10-11 14:28:44,644 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-11 14:28:44,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21727 conditions, 10834 events. 6540/10834 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 73614 event pairs, 2248 based on Foata normal form. 122/10692 useless extension candidates. Maximal degree in co-relation 21700. Up to 8293 conditions per place. [2024-10-11 14:28:44,720 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 99 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2024-10-11 14:28:44,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 154 transitions, 620 flow [2024-10-11 14:28:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:28:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:28:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-10-11 14:28:44,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228448275862069 [2024-10-11 14:28:44,724 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 206 flow. Second operand 8 states and 289 transitions. [2024-10-11 14:28:44,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 154 transitions, 620 flow [2024-10-11 14:28:44,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:44,732 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 330 flow [2024-10-11 14:28:44,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-10-11 14:28:44,733 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2024-10-11 14:28:44,733 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 330 flow [2024-10-11 14:28:44,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:44,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:44,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:28:44,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:28:44,735 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)] === [2024-10-11 14:28:44,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:44,735 INFO L85 PathProgramCache]: Analyzing trace with hash -386198332, now seen corresponding path program 3 times [2024-10-11 14:28:44,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:44,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535884105] [2024-10-11 14:28:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:44,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:44,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535884105] [2024-10-11 14:28:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535884105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:44,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:44,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:28:44,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807445862] [2024-10-11 14:28:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:44,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:28:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:44,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:28:44,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:28:44,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2024-10-11 14:28:44,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:44,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:44,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2024-10-11 14:28:44,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:45,633 INFO L124 PetriNetUnfolderBase]: 3749/7275 cut-off events. [2024-10-11 14:28:45,634 INFO L125 PetriNetUnfolderBase]: For 1193/1226 co-relation queries the response was YES. [2024-10-11 14:28:45,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15505 conditions, 7275 events. 3749/7275 cut-off events. For 1193/1226 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 55525 event pairs, 2406 based on Foata normal form. 124/7066 useless extension candidates. Maximal degree in co-relation 12309. Up to 4392 conditions per place. [2024-10-11 14:28:45,762 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 58 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2024-10-11 14:28:45,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 504 flow [2024-10-11 14:28:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:28:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:28:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-10-11 14:28:45,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7183908045977011 [2024-10-11 14:28:45,764 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 330 flow. Second operand 3 states and 125 transitions. [2024-10-11 14:28:45,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 504 flow [2024-10-11 14:28:45,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:28:45,782 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 340 flow [2024-10-11 14:28:45,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2024-10-11 14:28:45,785 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2024-10-11 14:28:45,786 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 340 flow [2024-10-11 14:28:45,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:45,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:45,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:28:45,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:28:45,787 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)] === [2024-10-11 14:28:45,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:45,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1906282394, now seen corresponding path program 4 times [2024-10-11 14:28:45,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129673643] [2024-10-11 14:28:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:45,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:45,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129673643] [2024-10-11 14:28:45,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129673643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:45,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:45,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:28:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262506988] [2024-10-11 14:28:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:45,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:28:45,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:45,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:28:45,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:28:45,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2024-10-11 14:28:45,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:45,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:45,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2024-10-11 14:28:45,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:46,527 INFO L124 PetriNetUnfolderBase]: 3628/7202 cut-off events. [2024-10-11 14:28:46,528 INFO L125 PetriNetUnfolderBase]: For 1498/1565 co-relation queries the response was YES. [2024-10-11 14:28:46,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15916 conditions, 7202 events. 3628/7202 cut-off events. For 1498/1565 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 56638 event pairs, 2614 based on Foata normal form. 109/6980 useless extension candidates. Maximal degree in co-relation 12668. Up to 4482 conditions per place. [2024-10-11 14:28:46,597 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 58 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2024-10-11 14:28:46,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 523 flow [2024-10-11 14:28:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:28:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:28:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-10-11 14:28:46,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2024-10-11 14:28:46,604 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 340 flow. Second operand 3 states and 124 transitions. [2024-10-11 14:28:46,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 523 flow [2024-10-11 14:28:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:46,614 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 346 flow [2024-10-11 14:28:46,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-10-11 14:28:46,616 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2024-10-11 14:28:46,616 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 346 flow [2024-10-11 14:28:46,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:46,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:46,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:28:46,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:28:46,617 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)] === [2024-10-11 14:28:46,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash -27737596, now seen corresponding path program 5 times [2024-10-11 14:28:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952953054] [2024-10-11 14:28:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:47,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952953054] [2024-10-11 14:28:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952953054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:47,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:47,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:28:47,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189895578] [2024-10-11 14:28:47,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:47,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:28:47,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:47,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:28:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:28:47,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-10-11 14:28:47,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 346 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:47,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:47,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-10-11 14:28:47,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:48,571 INFO L124 PetriNetUnfolderBase]: 7151/12498 cut-off events. [2024-10-11 14:28:48,572 INFO L125 PetriNetUnfolderBase]: For 3546/3632 co-relation queries the response was YES. [2024-10-11 14:28:48,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29585 conditions, 12498 events. 7151/12498 cut-off events. For 3546/3632 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 94141 event pairs, 2333 based on Foata normal form. 25/12289 useless extension candidates. Maximal degree in co-relation 16899. Up to 3108 conditions per place. [2024-10-11 14:28:48,681 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 184 selfloop transitions, 26 changer transitions 18/257 dead transitions. [2024-10-11 14:28:48,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 257 transitions, 1326 flow [2024-10-11 14:28:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 425 transitions. [2024-10-11 14:28:48,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6661442006269592 [2024-10-11 14:28:48,683 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 346 flow. Second operand 11 states and 425 transitions. [2024-10-11 14:28:48,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 257 transitions, 1326 flow [2024-10-11 14:28:48,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 257 transitions, 1322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:48,698 INFO L231 Difference]: Finished difference. Result has 98 places, 112 transitions, 549 flow [2024-10-11 14:28:48,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=549, PETRI_PLACES=98, PETRI_TRANSITIONS=112} [2024-10-11 14:28:48,700 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 34 predicate places. [2024-10-11 14:28:48,700 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 112 transitions, 549 flow [2024-10-11 14:28:48,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:48,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:48,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:28:48,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:28:48,703 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)] === [2024-10-11 14:28:48,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash -846354124, now seen corresponding path program 6 times [2024-10-11 14:28:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:48,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055556298] [2024-10-11 14:28:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:49,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:49,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055556298] [2024-10-11 14:28:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055556298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:49,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:28:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547694047] [2024-10-11 14:28:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:49,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:28:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:28:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:28:49,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 14:28:49,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 112 transitions, 549 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:49,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:49,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 14:28:49,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:53,695 INFO L124 PetriNetUnfolderBase]: 21175/36605 cut-off events. [2024-10-11 14:28:53,695 INFO L125 PetriNetUnfolderBase]: For 14177/14510 co-relation queries the response was YES. [2024-10-11 14:28:53,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90363 conditions, 36605 events. 21175/36605 cut-off events. For 14177/14510 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 306012 event pairs, 4639 based on Foata normal form. 65/35755 useless extension candidates. Maximal degree in co-relation 90287. Up to 16680 conditions per place. [2024-10-11 14:28:54,084 INFO L140 encePairwiseOnDemand]: 40/58 looper letters, 258 selfloop transitions, 100 changer transitions 2/413 dead transitions. [2024-10-11 14:28:54,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 413 transitions, 2123 flow [2024-10-11 14:28:54,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:28:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:28:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 703 transitions. [2024-10-11 14:28:54,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-10-11 14:28:54,089 INFO L175 Difference]: Start difference. First operand has 98 places, 112 transitions, 549 flow. Second operand 19 states and 703 transitions. [2024-10-11 14:28:54,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 413 transitions, 2123 flow [2024-10-11 14:28:54,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 413 transitions, 2117 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:54,544 INFO L231 Difference]: Finished difference. Result has 127 places, 213 transitions, 1268 flow [2024-10-11 14:28:54,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1268, PETRI_PLACES=127, PETRI_TRANSITIONS=213} [2024-10-11 14:28:54,545 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 63 predicate places. [2024-10-11 14:28:54,546 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 213 transitions, 1268 flow [2024-10-11 14:28:54,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:54,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:54,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:28:54,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:28:54,547 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)] === [2024-10-11 14:28:54,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1903305674, now seen corresponding path program 7 times [2024-10-11 14:28:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:54,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575026879] [2024-10-11 14:28:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:54,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:54,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575026879] [2024-10-11 14:28:54,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575026879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:54,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:54,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:28:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550852039] [2024-10-11 14:28:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:54,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:28:54,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:28:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:28:54,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-10-11 14:28:54,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 213 transitions, 1268 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:28:54,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:54,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-10-11 14:28:54,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:59,453 INFO L124 PetriNetUnfolderBase]: 27567/44469 cut-off events. [2024-10-11 14:28:59,453 INFO L125 PetriNetUnfolderBase]: For 60004/61190 co-relation queries the response was YES. [2024-10-11 14:28:59,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141754 conditions, 44469 events. 27567/44469 cut-off events. For 60004/61190 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 352663 event pairs, 8558 based on Foata normal form. 326/43131 useless extension candidates. Maximal degree in co-relation 133900. Up to 10554 conditions per place. [2024-10-11 14:28:59,976 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 289 selfloop transitions, 31 changer transitions 10/421 dead transitions. [2024-10-11 14:28:59,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 421 transitions, 2954 flow [2024-10-11 14:28:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 421 transitions. [2024-10-11 14:28:59,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6598746081504702 [2024-10-11 14:28:59,978 INFO L175 Difference]: Start difference. First operand has 127 places, 213 transitions, 1268 flow. Second operand 11 states and 421 transitions. [2024-10-11 14:28:59,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 421 transitions, 2954 flow [2024-10-11 14:29:01,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 421 transitions, 2834 flow, removed 60 selfloop flow, removed 0 redundant places. [2024-10-11 14:29:01,172 INFO L231 Difference]: Finished difference. Result has 141 places, 220 transitions, 1342 flow [2024-10-11 14:29:01,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1342, PETRI_PLACES=141, PETRI_TRANSITIONS=220} [2024-10-11 14:29:01,173 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 77 predicate places. [2024-10-11 14:29:01,174 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 220 transitions, 1342 flow [2024-10-11 14:29:01,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:01,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:01,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:29:01,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:29:01,175 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)] === [2024-10-11 14:29:01,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash -600199518, now seen corresponding path program 8 times [2024-10-11 14:29:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:01,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44793689] [2024-10-11 14:29:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:01,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:01,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44793689] [2024-10-11 14:29:01,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44793689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:01,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:29:01,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624242737] [2024-10-11 14:29:01,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:01,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:29:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:29:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:29:01,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-11 14:29:01,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 220 transitions, 1342 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:01,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:01,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-11 14:29:01,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:08,254 INFO L124 PetriNetUnfolderBase]: 32589/56855 cut-off events. [2024-10-11 14:29:08,255 INFO L125 PetriNetUnfolderBase]: For 83443/86121 co-relation queries the response was YES. [2024-10-11 14:29:08,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182569 conditions, 56855 events. 32589/56855 cut-off events. For 83443/86121 co-relation queries the response was YES. Maximal size of possible extension queue 1710. Compared 512992 event pairs, 4628 based on Foata normal form. 1196/56696 useless extension candidates. Maximal degree in co-relation 181051. Up to 12748 conditions per place. [2024-10-11 14:29:09,187 INFO L140 encePairwiseOnDemand]: 41/58 looper letters, 307 selfloop transitions, 175 changer transitions 4/552 dead transitions. [2024-10-11 14:29:09,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 552 transitions, 3860 flow [2024-10-11 14:29:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:29:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:29:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 649 transitions. [2024-10-11 14:29:09,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6582150101419878 [2024-10-11 14:29:09,189 INFO L175 Difference]: Start difference. First operand has 141 places, 220 transitions, 1342 flow. Second operand 17 states and 649 transitions. [2024-10-11 14:29:09,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 552 transitions, 3860 flow [2024-10-11 14:29:10,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 552 transitions, 3791 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-11 14:29:10,885 INFO L231 Difference]: Finished difference. Result has 166 places, 332 transitions, 2731 flow [2024-10-11 14:29:10,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2731, PETRI_PLACES=166, PETRI_TRANSITIONS=332} [2024-10-11 14:29:10,886 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2024-10-11 14:29:10,887 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 332 transitions, 2731 flow [2024-10-11 14:29:10,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:10,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:10,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:29:10,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:29:10,888 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)] === [2024-10-11 14:29:10,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1862307334, now seen corresponding path program 9 times [2024-10-11 14:29:10,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:10,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42240075] [2024-10-11 14:29:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:11,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:11,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42240075] [2024-10-11 14:29:11,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42240075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:11,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:11,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:29:11,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141534797] [2024-10-11 14:29:11,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:11,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:11,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:11,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:29:11,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-10-11 14:29:11,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 332 transitions, 2731 flow. Second operand has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:11,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:11,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-10-11 14:29:11,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:20,295 INFO L124 PetriNetUnfolderBase]: 36124/63044 cut-off events. [2024-10-11 14:29:20,295 INFO L125 PetriNetUnfolderBase]: For 255400/261574 co-relation queries the response was YES. [2024-10-11 14:29:21,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252423 conditions, 63044 events. 36124/63044 cut-off events. For 255400/261574 co-relation queries the response was YES. Maximal size of possible extension queue 1934. Compared 578424 event pairs, 12880 based on Foata normal form. 1230/62265 useless extension candidates. Maximal degree in co-relation 250480. Up to 24949 conditions per place. [2024-10-11 14:29:21,218 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 345 selfloop transitions, 96 changer transitions 12/528 dead transitions. [2024-10-11 14:29:21,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 528 transitions, 5164 flow [2024-10-11 14:29:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:29:21,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:29:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 320 transitions. [2024-10-11 14:29:21,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6130268199233716 [2024-10-11 14:29:21,220 INFO L175 Difference]: Start difference. First operand has 166 places, 332 transitions, 2731 flow. Second operand 9 states and 320 transitions. [2024-10-11 14:29:21,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 528 transitions, 5164 flow [2024-10-11 14:29:24,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 528 transitions, 5065 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:24,579 INFO L231 Difference]: Finished difference. Result has 179 places, 381 transitions, 3576 flow [2024-10-11 14:29:24,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3576, PETRI_PLACES=179, PETRI_TRANSITIONS=381} [2024-10-11 14:29:24,580 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 115 predicate places. [2024-10-11 14:29:24,580 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 381 transitions, 3576 flow [2024-10-11 14:29:24,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:24,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:24,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-10-11 14:29:24,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:29:24,581 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)] === [2024-10-11 14:29:24,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1179596126, now seen corresponding path program 10 times [2024-10-11 14:29:24,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:24,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72582337] [2024-10-11 14:29:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:24,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:25,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72582337] [2024-10-11 14:29:25,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72582337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:25,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:25,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:29:25,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767706789] [2024-10-11 14:29:25,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:25,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:29:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:29:25,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:29:25,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 14:29:25,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 381 transitions, 3576 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:25,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:25,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 14:29:25,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:36,865 INFO L124 PetriNetUnfolderBase]: 44695/78530 cut-off events. [2024-10-11 14:29:36,865 INFO L125 PetriNetUnfolderBase]: For 412538/419913 co-relation queries the response was YES. [2024-10-11 14:29:37,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330674 conditions, 78530 events. 44695/78530 cut-off events. For 412538/419913 co-relation queries the response was YES. Maximal size of possible extension queue 2420. Compared 742467 event pairs, 14977 based on Foata normal form. 889/77797 useless extension candidates. Maximal degree in co-relation 327913. Up to 55004 conditions per place. [2024-10-11 14:29:38,114 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 413 selfloop transitions, 95 changer transitions 9/577 dead transitions. [2024-10-11 14:29:38,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 577 transitions, 6293 flow [2024-10-11 14:29:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:29:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:29:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 357 transitions. [2024-10-11 14:29:38,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6155172413793103 [2024-10-11 14:29:38,116 INFO L175 Difference]: Start difference. First operand has 179 places, 381 transitions, 3576 flow. Second operand 10 states and 357 transitions. [2024-10-11 14:29:38,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 577 transitions, 6293 flow