./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/popl20-mult-4.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/popl20-mult-4.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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:34:37,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:34:37,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:34:37,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:34:37,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:34:37,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:34:37,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:34:37,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:34:37,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:34:37,285 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:34:37,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:34:37,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:34:37,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:34:37,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:34:37,287 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:34:37,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:34:37,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:34:37,288 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:34:37,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:34:37,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:34:37,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:34:37,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:34:37,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:34:37,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:34:37,290 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:34:37,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:34:37,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:34:37,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:34:37,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:34:37,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:34:37,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:34:37,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:34:37,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:34:37,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:34:37,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:34:37,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:34:37,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:34:37,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:34:37,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:34:37,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:34:37,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:34:37,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:34:37,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-10-11 14:34:37,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:34:37,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:34:37,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:34:37,492 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:34:37,493 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:34:37,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-10-11 14:34:38,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:34:38,787 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:34:38,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-10-11 14:34:38,798 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c7b7e3147/25cd587c8ddd4b3fb7e038d2b7b96af3/FLAG5ec68c742 [2024-10-11 14:34:39,199 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c7b7e3147/25cd587c8ddd4b3fb7e038d2b7b96af3 [2024-10-11 14:34:39,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:34:39,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:34:39,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:34:39,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:34:39,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:34:39,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cbb93dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39, skipping insertion in model container [2024-10-11 14:34:39,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:34:39,369 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/popl20-mult-4.wvr.c[2664,2677] [2024-10-11 14:34:39,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:34:39,379 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:34:39,397 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/popl20-mult-4.wvr.c[2664,2677] [2024-10-11 14:34:39,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:34:39,413 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:34:39,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39 WrapperNode [2024-10-11 14:34:39,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:34:39,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:34:39,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:34:39,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:34:39,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,447 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 98 [2024-10-11 14:34:39,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:34:39,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:34:39,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:34:39,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:34:39,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,481 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 14:34:39,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:34:39,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:34:39,504 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:34:39,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:34:39,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (1/1) ... [2024-10-11 14:34:39,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:34:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:39,535 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 14:34:39,538 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 14:34:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:34:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:34:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:34:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:34:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:34:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:34:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:34:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 14:34:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 14:34:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:34:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:34:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:34:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:34:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:34:39,580 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 14:34:39,663 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:34:39,665 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:34:39,824 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:34:39,824 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:34:39,946 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:34:39,946 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 14:34:39,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:34:39 BoogieIcfgContainer [2024-10-11 14:34:39,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:34:39,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:34:39,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:34:39,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:34:39,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:34:39" (1/3) ... [2024-10-11 14:34:39,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b190cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:34:39, skipping insertion in model container [2024-10-11 14:34:39,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:34:39" (2/3) ... [2024-10-11 14:34:39,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b190cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:34:39, skipping insertion in model container [2024-10-11 14:34:39,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:34:39" (3/3) ... [2024-10-11 14:34:39,955 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-10-11 14:34:39,967 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:34:39,967 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:34:39,967 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:34:40,015 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 14:34:40,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-10-11 14:34:40,065 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-11 14:34:40,065 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:34:40,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-11 14:34:40,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-10-11 14:34:40,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-10-11 14:34:40,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:34:40,086 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;@3cd8046c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:34:40,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 14:34:40,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:34:40,101 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-11 14:34:40,101 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:34:40,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:40,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:40,102 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 2 more)] === [2024-10-11 14:34:40,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash -196909692, now seen corresponding path program 1 times [2024-10-11 14:34:40,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:40,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116291648] [2024-10-11 14:34:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:40,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:40,439 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 14:34:40,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116291648] [2024-10-11 14:34:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116291648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:40,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:34:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212305754] [2024-10-11 14:34:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:40,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:34:40,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:40,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:34:40,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:34:40,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 14:34:40,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:40,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:40,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 14:34:40,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:40,907 INFO L124 PetriNetUnfolderBase]: 3042/4228 cut-off events. [2024-10-11 14:34:40,907 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-10-11 14:34:40,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 4228 events. 3042/4228 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18771 event pairs, 763 based on Foata normal form. 152/4370 useless extension candidates. Maximal degree in co-relation 7622. Up to 3203 conditions per place. [2024-10-11 14:34:40,935 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-10-11 14:34:40,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-10-11 14:34:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:34:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:34:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-11 14:34:40,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-11 14:34:40,948 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-10-11 14:34:40,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-10-11 14:34:40,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:40,957 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-10-11 14:34:40,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-10-11 14:34:40,964 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-10-11 14:34:40,964 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-10-11 14:34:40,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:40,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:40,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:40,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:34:40,966 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 2 more)] === [2024-10-11 14:34:40,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1212674722, now seen corresponding path program 1 times [2024-10-11 14:34:40,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:40,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132004713] [2024-10-11 14:34:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132004713] [2024-10-11 14:34:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132004713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:41,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:41,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:41,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999449985] [2024-10-11 14:34:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:41,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:41,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:41,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:34:41,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:41,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:41,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:42,023 INFO L124 PetriNetUnfolderBase]: 11982/15969 cut-off events. [2024-10-11 14:34:42,023 INFO L125 PetriNetUnfolderBase]: For 965/965 co-relation queries the response was YES. [2024-10-11 14:34:42,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33885 conditions, 15969 events. 11982/15969 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 80300 event pairs, 4246 based on Foata normal form. 0/12597 useless extension candidates. Maximal degree in co-relation 9444. Up to 8562 conditions per place. [2024-10-11 14:34:42,134 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-10-11 14:34:42,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-10-11 14:34:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-11 14:34:42,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-10-11 14:34:42,136 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 129 transitions. [2024-10-11 14:34:42,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-10-11 14:34:42,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:34:42,142 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-10-11 14:34:42,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-10-11 14:34:42,142 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-10-11 14:34:42,143 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-10-11 14:34:42,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:34:42,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:42,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:42,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:34:42,143 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 2 more)] === [2024-10-11 14:34:42,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1378229130, now seen corresponding path program 2 times [2024-10-11 14:34:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113472424] [2024-10-11 14:34:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:42,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:42,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:42,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113472424] [2024-10-11 14:34:42,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113472424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:42,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:34:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666340169] [2024-10-11 14:34:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:42,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:34:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:34:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:34:42,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:42,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 14:34:42,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:42,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:42,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:43,433 INFO L124 PetriNetUnfolderBase]: 17564/23591 cut-off events. [2024-10-11 14:34:43,433 INFO L125 PetriNetUnfolderBase]: For 10625/10703 co-relation queries the response was YES. [2024-10-11 14:34:43,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62097 conditions, 23591 events. 17564/23591 cut-off events. For 10625/10703 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 127674 event pairs, 3199 based on Foata normal form. 682/23853 useless extension candidates. Maximal degree in co-relation 35433. Up to 13004 conditions per place. [2024-10-11 14:34:43,525 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 85 selfloop transitions, 8 changer transitions 2/100 dead transitions. [2024-10-11 14:34:43,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 100 transitions, 538 flow [2024-10-11 14:34:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:34:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:34:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-11 14:34:43,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-11 14:34:43,528 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 106 transitions. [2024-10-11 14:34:43,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 100 transitions, 538 flow [2024-10-11 14:34:43,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:34:43,536 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 251 flow [2024-10-11 14:34:43,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2024-10-11 14:34:43,537 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-10-11 14:34:43,537 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 251 flow [2024-10-11 14:34:43,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 14:34:43,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:43,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:43,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:34:43,538 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 2 more)] === [2024-10-11 14:34:43,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:43,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1042999286, now seen corresponding path program 3 times [2024-10-11 14:34:43,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:43,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950461003] [2024-10-11 14:34:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:43,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:43,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:43,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950461003] [2024-10-11 14:34:43,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950461003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:43,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:43,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:43,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369669713] [2024-10-11 14:34:43,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:43,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:43,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:43,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:43,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:34:43,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:43,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:43,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:45,149 INFO L124 PetriNetUnfolderBase]: 23068/30667 cut-off events. [2024-10-11 14:34:45,149 INFO L125 PetriNetUnfolderBase]: For 28293/28363 co-relation queries the response was YES. [2024-10-11 14:34:45,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90946 conditions, 30667 events. 23068/30667 cut-off events. For 28293/28363 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 165130 event pairs, 6411 based on Foata normal form. 198/30256 useless extension candidates. Maximal degree in co-relation 34831. Up to 12390 conditions per place. [2024-10-11 14:34:45,454 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 97 selfloop transitions, 18 changer transitions 0/120 dead transitions. [2024-10-11 14:34:45,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 120 transitions, 739 flow [2024-10-11 14:34:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-11 14:34:45,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-11 14:34:45,456 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 251 flow. Second operand 5 states and 128 transitions. [2024-10-11 14:34:45,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 120 transitions, 739 flow [2024-10-11 14:34:45,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 120 transitions, 739 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:34:45,470 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 382 flow [2024-10-11 14:34:45,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-10-11 14:34:45,471 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-10-11 14:34:45,471 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 382 flow [2024-10-11 14:34:45,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:34:45,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:45,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:45,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:34:45,472 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 2 more)] === [2024-10-11 14:34:45,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:45,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1595229820, now seen corresponding path program 4 times [2024-10-11 14:34:45,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:45,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909249606] [2024-10-11 14:34:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:45,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:45,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909249606] [2024-10-11 14:34:45,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909249606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:45,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:45,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:34:45,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716797954] [2024-10-11 14:34:45,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:45,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:34:45,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:45,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:34:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:34:45,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:45,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 14:34:45,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:45,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:45,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:47,158 INFO L124 PetriNetUnfolderBase]: 23424/31316 cut-off events. [2024-10-11 14:34:47,159 INFO L125 PetriNetUnfolderBase]: For 56673/56749 co-relation queries the response was YES. [2024-10-11 14:34:47,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103558 conditions, 31316 events. 23424/31316 cut-off events. For 56673/56749 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 171685 event pairs, 6986 based on Foata normal form. 374/31085 useless extension candidates. Maximal degree in co-relation 38546. Up to 16023 conditions per place. [2024-10-11 14:34:47,375 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 90 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2024-10-11 14:34:47,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 755 flow [2024-10-11 14:34:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:34:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:34:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-11 14:34:47,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-11 14:34:47,377 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 382 flow. Second operand 4 states and 106 transitions. [2024-10-11 14:34:47,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 755 flow [2024-10-11 14:34:47,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 741 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-10-11 14:34:47,441 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 409 flow [2024-10-11 14:34:47,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-11 14:34:47,443 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-10-11 14:34:47,444 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 409 flow [2024-10-11 14:34:47,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 14:34:47,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:47,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:47,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:34:47,444 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 2 more)] === [2024-10-11 14:34:47,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash -968849720, now seen corresponding path program 1 times [2024-10-11 14:34:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:47,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510395714] [2024-10-11 14:34:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:47,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:47,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510395714] [2024-10-11 14:34:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510395714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:47,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:47,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668902175] [2024-10-11 14:34:47,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:47,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:47,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:47,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:47,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:34:47,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:47,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:47,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:49,787 INFO L124 PetriNetUnfolderBase]: 25337/34127 cut-off events. [2024-10-11 14:34:49,788 INFO L125 PetriNetUnfolderBase]: For 83667/83689 co-relation queries the response was YES. [2024-10-11 14:34:50,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115511 conditions, 34127 events. 25337/34127 cut-off events. For 83667/83689 co-relation queries the response was YES. Maximal size of possible extension queue 1275. Compared 193894 event pairs, 7642 based on Foata normal form. 762/34103 useless extension candidates. Maximal degree in co-relation 43375. Up to 15999 conditions per place. [2024-10-11 14:34:50,236 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 92 selfloop transitions, 12 changer transitions 17/126 dead transitions. [2024-10-11 14:34:50,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 126 transitions, 936 flow [2024-10-11 14:34:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-10-11 14:34:50,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-11 14:34:50,237 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 409 flow. Second operand 5 states and 130 transitions. [2024-10-11 14:34:50,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 126 transitions, 936 flow [2024-10-11 14:34:50,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 126 transitions, 849 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-10-11 14:34:50,272 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 413 flow [2024-10-11 14:34:50,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2024-10-11 14:34:50,273 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2024-10-11 14:34:50,273 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 413 flow [2024-10-11 14:34:50,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:34:50,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:50,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:34:50,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:34:50,274 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 2 more)] === [2024-10-11 14:34:50,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1024433046, now seen corresponding path program 2 times [2024-10-11 14:34:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712176434] [2024-10-11 14:34:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712176434] [2024-10-11 14:34:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712176434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:34:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332899000] [2024-10-11 14:34:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:50,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:34:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:34:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:34:50,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:50,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 14:34:50,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:50,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:50,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:52,021 INFO L124 PetriNetUnfolderBase]: 23812/32163 cut-off events. [2024-10-11 14:34:52,021 INFO L125 PetriNetUnfolderBase]: For 74083/74157 co-relation queries the response was YES. [2024-10-11 14:34:52,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112397 conditions, 32163 events. 23812/32163 cut-off events. For 74083/74157 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 180610 event pairs, 7575 based on Foata normal form. 645/32072 useless extension candidates. Maximal degree in co-relation 46903. Up to 16193 conditions per place. [2024-10-11 14:34:52,178 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 80 selfloop transitions, 18 changer transitions 5/108 dead transitions. [2024-10-11 14:34:52,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 830 flow [2024-10-11 14:34:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:34:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:34:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-10-11 14:34:52,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-11 14:34:52,180 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 413 flow. Second operand 4 states and 104 transitions. [2024-10-11 14:34:52,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 830 flow [2024-10-11 14:34:52,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 791 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-11 14:34:52,265 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 453 flow [2024-10-11 14:34:52,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-11 14:34:52,266 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-10-11 14:34:52,266 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 453 flow [2024-10-11 14:34:52,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 14:34:52,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:52,266 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] [2024-10-11 14:34:52,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:34:52,266 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 2 more)] === [2024-10-11 14:34:52,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:52,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2090472171, now seen corresponding path program 1 times [2024-10-11 14:34:52,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:52,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200635326] [2024-10-11 14:34:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:34:52,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:52,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200635326] [2024-10-11 14:34:52,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200635326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:52,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:52,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:34:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205051412] [2024-10-11 14:34:52,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:52,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:34:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:34:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:34:52,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:52,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 14:34:52,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:52,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:52,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:54,641 INFO L124 PetriNetUnfolderBase]: 29031/39316 cut-off events. [2024-10-11 14:34:54,642 INFO L125 PetriNetUnfolderBase]: For 92105/92175 co-relation queries the response was YES. [2024-10-11 14:34:54,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140971 conditions, 39316 events. 29031/39316 cut-off events. For 92105/92175 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 229030 event pairs, 4660 based on Foata normal form. 882/39554 useless extension candidates. Maximal degree in co-relation 63214. Up to 16276 conditions per place. [2024-10-11 14:34:54,849 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 122 selfloop transitions, 25 changer transitions 5/157 dead transitions. [2024-10-11 14:34:54,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 157 transitions, 1191 flow [2024-10-11 14:34:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:34:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:34:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-10-11 14:34:54,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-10-11 14:34:54,851 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 453 flow. Second operand 7 states and 179 transitions. [2024-10-11 14:34:54,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 157 transitions, 1191 flow [2024-10-11 14:34:54,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 157 transitions, 1164 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-11 14:34:54,870 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 605 flow [2024-10-11 14:34:54,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=605, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-10-11 14:34:54,870 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-10-11 14:34:54,870 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 605 flow [2024-10-11 14:34:54,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 14:34:54,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:54,871 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] [2024-10-11 14:34:54,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:34:54,871 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 2 more)] === [2024-10-11 14:34:54,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1417153903, now seen corresponding path program 1 times [2024-10-11 14:34:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:54,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626980218] [2024-10-11 14:34:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:54,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:34:54,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626980218] [2024-10-11 14:34:54,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626980218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:34:54,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:34:54,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:34:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107064366] [2024-10-11 14:34:54,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:54,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:34:54,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:54,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:34:54,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:34:54,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:54,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 14:34:54,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:54,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:54,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:57,762 INFO L124 PetriNetUnfolderBase]: 36565/49188 cut-off events. [2024-10-11 14:34:57,763 INFO L125 PetriNetUnfolderBase]: For 170311/170335 co-relation queries the response was YES. [2024-10-11 14:34:57,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186664 conditions, 49188 events. 36565/49188 cut-off events. For 170311/170335 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 291872 event pairs, 9834 based on Foata normal form. 320/48618 useless extension candidates. Maximal degree in co-relation 111551. Up to 21206 conditions per place. [2024-10-11 14:34:58,050 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 135 selfloop transitions, 31 changer transitions 4/175 dead transitions. [2024-10-11 14:34:58,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 175 transitions, 1849 flow [2024-10-11 14:34:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:34:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:34:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-11 14:34:58,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-11 14:34:58,052 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 605 flow. Second operand 5 states and 126 transitions. [2024-10-11 14:34:58,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 175 transitions, 1849 flow [2024-10-11 14:34:58,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 175 transitions, 1732 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-10-11 14:34:58,254 INFO L231 Difference]: Finished difference. Result has 73 places, 90 transitions, 840 flow [2024-10-11 14:34:58,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=73, PETRI_TRANSITIONS=90} [2024-10-11 14:34:58,254 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-10-11 14:34:58,255 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 840 flow [2024-10-11 14:34:58,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 14:34:58,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:58,255 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] [2024-10-11 14:34:58,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:34:58,255 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 2 more)] === [2024-10-11 14:34:58,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1017012735, now seen corresponding path program 2 times [2024-10-11 14:34:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254343691] [2024-10-11 14:34:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:58,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:34:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:58,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254343691] [2024-10-11 14:34:58,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254343691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705441743] [2024-10-11 14:34:58,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:34:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:58,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:58,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:34:58,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:34:58,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:58,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:34:58,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:34:58,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:34:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705441743] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:58,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:34:58,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-10-11 14:34:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717557585] [2024-10-11 14:34:58,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:34:58,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:34:58,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:34:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:34:58,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:34:58,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 14:34:58,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:58,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:34:58,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:01,717 INFO L124 PetriNetUnfolderBase]: 37850/51490 cut-off events. [2024-10-11 14:35:01,717 INFO L125 PetriNetUnfolderBase]: For 218123/218149 co-relation queries the response was YES. [2024-10-11 14:35:01,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220804 conditions, 51490 events. 37850/51490 cut-off events. For 218123/218149 co-relation queries the response was YES. Maximal size of possible extension queue 2032. Compared 313553 event pairs, 4767 based on Foata normal form. 1265/52133 useless extension candidates. Maximal degree in co-relation 130141. Up to 24085 conditions per place. [2024-10-11 14:35:02,244 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 128 selfloop transitions, 13 changer transitions 11/157 dead transitions. [2024-10-11 14:35:02,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 157 transitions, 1746 flow [2024-10-11 14:35:02,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:35:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:35:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-10-11 14:35:02,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 14:35:02,245 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 840 flow. Second operand 4 states and 100 transitions. [2024-10-11 14:35:02,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 157 transitions, 1746 flow [2024-10-11 14:35:02,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 157 transitions, 1692 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:35:02,558 INFO L231 Difference]: Finished difference. Result has 77 places, 91 transitions, 860 flow [2024-10-11 14:35:02,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=860, PETRI_PLACES=77, PETRI_TRANSITIONS=91} [2024-10-11 14:35:02,559 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-10-11 14:35:02,559 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 860 flow [2024-10-11 14:35:02,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 14:35:02,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:02,559 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] [2024-10-11 14:35:02,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:35:02,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 14:35:02,760 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:35:02,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:02,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1739015201, now seen corresponding path program 3 times [2024-10-11 14:35:02,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:02,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957386744] [2024-10-11 14:35:02,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:02,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:02,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:02,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957386744] [2024-10-11 14:35:02,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957386744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:02,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:02,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:35:02,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074406201] [2024-10-11 14:35:02,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:02,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:02,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:35:02,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:35:02,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 14:35:02,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:02,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:35:02,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:06,956 INFO L124 PetriNetUnfolderBase]: 48949/66373 cut-off events. [2024-10-11 14:35:06,956 INFO L125 PetriNetUnfolderBase]: For 351100/351178 co-relation queries the response was YES. [2024-10-11 14:35:07,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299147 conditions, 66373 events. 48949/66373 cut-off events. For 351100/351178 co-relation queries the response was YES. Maximal size of possible extension queue 2466. Compared 408894 event pairs, 15957 based on Foata normal form. 306/65150 useless extension candidates. Maximal degree in co-relation 177387. Up to 37021 conditions per place. [2024-10-11 14:35:07,606 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 174 selfloop transitions, 29 changer transitions 4/212 dead transitions. [2024-10-11 14:35:07,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 212 transitions, 2507 flow [2024-10-11 14:35:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:35:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:35:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-10-11 14:35:07,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-10-11 14:35:07,607 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 860 flow. Second operand 5 states and 124 transitions. [2024-10-11 14:35:07,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 212 transitions, 2507 flow [2024-10-11 14:35:07,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 212 transitions, 2472 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:35:07,939 INFO L231 Difference]: Finished difference. Result has 82 places, 114 transitions, 1260 flow [2024-10-11 14:35:07,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1260, PETRI_PLACES=82, PETRI_TRANSITIONS=114} [2024-10-11 14:35:07,939 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-10-11 14:35:07,939 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 114 transitions, 1260 flow [2024-10-11 14:35:07,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 14:35:07,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:07,940 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] [2024-10-11 14:35:07,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:35:07,940 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:35:07,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash -679498479, now seen corresponding path program 2 times [2024-10-11 14:35:07,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:07,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600794754] [2024-10-11 14:35:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:35:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600794754] [2024-10-11 14:35:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600794754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:08,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:35:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523840787] [2024-10-11 14:35:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:08,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:35:08,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:35:08,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 114 transitions, 1260 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 14:35:08,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:08,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:35:08,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:14,055 INFO L124 PetriNetUnfolderBase]: 62690/84017 cut-off events. [2024-10-11 14:35:14,059 INFO L125 PetriNetUnfolderBase]: For 559579/559769 co-relation queries the response was YES. [2024-10-11 14:35:14,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418453 conditions, 84017 events. 62690/84017 cut-off events. For 559579/559769 co-relation queries the response was YES. Maximal size of possible extension queue 3384. Compared 524038 event pairs, 14896 based on Foata normal form. 1299/82705 useless extension candidates. Maximal degree in co-relation 298353. Up to 33847 conditions per place. [2024-10-11 14:35:14,669 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 194 selfloop transitions, 32 changer transitions 6/237 dead transitions. [2024-10-11 14:35:14,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 237 transitions, 2982 flow [2024-10-11 14:35:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:35:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:35:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-11 14:35:14,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-11 14:35:14,670 INFO L175 Difference]: Start difference. First operand has 82 places, 114 transitions, 1260 flow. Second operand 5 states and 126 transitions. [2024-10-11 14:35:14,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 237 transitions, 2982 flow [2024-10-11 14:35:15,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 237 transitions, 2950 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-10-11 14:35:15,273 INFO L231 Difference]: Finished difference. Result has 88 places, 124 transitions, 1464 flow [2024-10-11 14:35:15,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1464, PETRI_PLACES=88, PETRI_TRANSITIONS=124} [2024-10-11 14:35:15,273 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-10-11 14:35:15,273 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 124 transitions, 1464 flow [2024-10-11 14:35:15,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 14:35:15,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:15,274 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] [2024-10-11 14:35:15,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:35:15,274 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:35:15,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash 778075769, now seen corresponding path program 4 times [2024-10-11 14:35:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:15,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613360976] [2024-10-11 14:35:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:15,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:15,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613360976] [2024-10-11 14:35:15,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613360976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:15,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:15,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:35:15,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744463601] [2024-10-11 14:35:15,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:15,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:15,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:15,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:35:15,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:35:15,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 124 transitions, 1464 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 14:35:15,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:15,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:35:15,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand