./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-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:11:26,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:11:26,488 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:11:26,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:11:26,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:11:26,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:11:26,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:11:26,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:11:26,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:11:26,516 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:11:26,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:11:26,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:11:26,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:11:26,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:11:26,523 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:11:26,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:11:26,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:11:26,524 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:11:26,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:11:26,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:11:26,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:11:26,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:11:26,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:11:26,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:11:26,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:11:26,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:11:26,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:11:26,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:11:26,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:11:26,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:11:26,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:11:26,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:11:26,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:11:26,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:11:26,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:11:26,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:11:26,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:11:26,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:11:26,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:11:26,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:11:26,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:11:26,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:11:26,531 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-13 07:11:26,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:11:26,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:11:26,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:11:26,856 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:11:26,856 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:11:26,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-13 07:11:28,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:11:28,451 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:11:28,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-13 07:11:28,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f652c4bab/e5396b70fa234e68b3550d7cd89ac574/FLAG913e8e254 [2024-10-13 07:11:28,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f652c4bab/e5396b70fa234e68b3550d7cd89ac574 [2024-10-13 07:11:28,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:11:28,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:11:28,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:11:28,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:11:28,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:11:28,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfb87df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28, skipping insertion in model container [2024-10-13 07:11:28,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,513 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:11:28,714 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-difference-det.wvr.c[2559,2572] [2024-10-13 07:11:28,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:11:28,726 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:11:28,746 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-difference-det.wvr.c[2559,2572] [2024-10-13 07:11:28,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:11:28,768 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:11:28,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28 WrapperNode [2024-10-13 07:11:28,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:11:28,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:11:28,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:11:28,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:11:28,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,802 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 101 [2024-10-13 07:11:28,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:11:28,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:11:28,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:11:28,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:11:28,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,816 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,836 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]. [2024-10-13 07:11:28,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:11:28,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:11:28,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:11:28,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:11:28,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (1/1) ... [2024-10-13 07:11:28,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:11:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:28,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:11:28,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:11:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:11:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:11:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:11:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:11:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:11:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:11:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:11:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 07:11:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 07:11:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:11:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:11:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:11:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:11:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:11:28,941 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:11:29,049 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:11:29,052 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:11:29,252 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:11:29,252 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:11:29,388 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:11:29,388 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 07:11:29,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:29 BoogieIcfgContainer [2024-10-13 07:11:29,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:11:29,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:11:29,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:11:29,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:11:29,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:11:28" (1/3) ... [2024-10-13 07:11:29,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28570da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:29, skipping insertion in model container [2024-10-13 07:11:29,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:28" (2/3) ... [2024-10-13 07:11:29,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28570da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:29, skipping insertion in model container [2024-10-13 07:11:29,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:29" (3/3) ... [2024-10-13 07:11:29,401 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-13 07:11:29,419 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:11:29,419 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:11:29,420 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:11:29,502 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 07:11:29,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-10-13 07:11:29,609 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-13 07:11:29,609 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:11:29,617 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 53 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. [2024-10-13 07:11:29,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-10-13 07:11:29,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-10-13 07:11:29,634 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:11:29,641 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;@66b1d4f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:11:29,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 07:11:29,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:11:29,654 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-13 07:11:29,654 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:11:29,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:29,656 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] [2024-10-13 07:11:29,657 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)] === [2024-10-13 07:11:29,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash 313037294, now seen corresponding path program 1 times [2024-10-13 07:11:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:29,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795600453] [2024-10-13 07:11:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:29,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:30,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:30,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795600453] [2024-10-13 07:11:30,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795600453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:30,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:30,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:11:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125044496] [2024-10-13 07:11:30,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:30,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:11:30,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:30,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:11:30,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:11:30,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-13 07:11:30,111 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) [2024-10-13 07:11:30,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:30,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-13 07:11:30,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:30,765 INFO L124 PetriNetUnfolderBase]: 3331/4557 cut-off events. [2024-10-13 07:11:30,765 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-10-13 07:11:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9300 conditions, 4557 events. 3331/4557 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19746 event pairs, 587 based on Foata normal form. 1/4545 useless extension candidates. Maximal degree in co-relation 8250. Up to 3534 conditions per place. [2024-10-13 07:11:30,812 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-10-13 07:11:30,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-10-13 07:11:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:11:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:11:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-13 07:11:30,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-13 07:11:30,829 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-10-13 07:11:30,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-10-13 07:11:30,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 07:11:30,846 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-10-13 07:11:30,849 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=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-10-13 07:11:30,855 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-10-13 07:11:30,856 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-10-13 07:11:30,856 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) [2024-10-13 07:11:30,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:30,856 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] [2024-10-13 07:11:30,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:11:30,857 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)] === [2024-10-13 07:11:30,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash -189752120, now seen corresponding path program 1 times [2024-10-13 07:11:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:30,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949711760] [2024-10-13 07:11:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:31,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949711760] [2024-10-13 07:11:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949711760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:31,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:11:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025201358] [2024-10-13 07:11:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:31,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:11:31,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:11:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:11:31,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-13 07:11:31,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:31,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:31,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-13 07:11:31,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:32,032 INFO L124 PetriNetUnfolderBase]: 7556/10174 cut-off events. [2024-10-13 07:11:32,033 INFO L125 PetriNetUnfolderBase]: For 1714/1726 co-relation queries the response was YES. [2024-10-13 07:11:32,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22978 conditions, 10174 events. 7556/10174 cut-off events. For 1714/1726 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 51462 event pairs, 2226 based on Foata normal form. 0/9634 useless extension candidates. Maximal degree in co-relation 4501. Up to 5136 conditions per place. [2024-10-13 07:11:32,121 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 90 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-10-13 07:11:32,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 104 transitions, 498 flow [2024-10-13 07:11:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-13 07:11:32,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-10-13 07:11:32,128 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 127 transitions. [2024-10-13 07:11:32,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 104 transitions, 498 flow [2024-10-13 07:11:32,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 104 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:32,133 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-10-13 07:11:32,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-10-13 07:11:32,135 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-10-13 07:11:32,135 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-10-13 07:11:32,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:32,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:32,136 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] [2024-10-13 07:11:32,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:11:32,136 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)] === [2024-10-13 07:11:32,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash -67583410, now seen corresponding path program 2 times [2024-10-13 07:11:32,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:32,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833566765] [2024-10-13 07:11:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:32,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833566765] [2024-10-13 07:11:32,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833566765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:11:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835618906] [2024-10-13 07:11:32,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:11:32,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:32,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:32,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:11:32,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:11:32,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:11:32,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:11:32,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:11:32,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:11:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:32,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:11:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:32,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835618906] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:11:32,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:11:32,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-13 07:11:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364099866] [2024-10-13 07:11:32,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:11:32,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:11:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:11:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:11:32,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:11:32,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2024-10-13 07:11:32,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:32,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:11:32,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:34,386 INFO L124 PetriNetUnfolderBase]: 13211/17330 cut-off events. [2024-10-13 07:11:34,387 INFO L125 PetriNetUnfolderBase]: For 6127/6127 co-relation queries the response was YES. [2024-10-13 07:11:34,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45000 conditions, 17330 events. 13211/17330 cut-off events. For 6127/6127 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 87727 event pairs, 978 based on Foata normal form. 280/17608 useless extension candidates. Maximal degree in co-relation 24868. Up to 3827 conditions per place. [2024-10-13 07:11:34,502 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 234 selfloop transitions, 36 changer transitions 0/273 dead transitions. [2024-10-13 07:11:34,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 273 transitions, 1371 flow [2024-10-13 07:11:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:11:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:11:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 340 transitions. [2024-10-13 07:11:34,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-10-13 07:11:34,507 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 340 transitions. [2024-10-13 07:11:34,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 273 transitions, 1371 flow [2024-10-13 07:11:34,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 273 transitions, 1371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:11:34,521 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 405 flow [2024-10-13 07:11:34,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=405, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2024-10-13 07:11:34,524 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-10-13 07:11:34,524 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 405 flow [2024-10-13 07:11:34,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2024-10-13 07:11:34,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:34,525 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] [2024-10-13 07:11:34,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:11:34,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:34,726 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)] === [2024-10-13 07:11:34,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1569690990, now seen corresponding path program 3 times [2024-10-13 07:11:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:34,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144358983] [2024-10-13 07:11:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:34,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144358983] [2024-10-13 07:11:34,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144358983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:34,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:34,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:11:34,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758219560] [2024-10-13 07:11:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:34,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:11:34,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:11:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:11:34,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-13 07:11:34,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:34,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:34,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-13 07:11:34,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:36,562 INFO L124 PetriNetUnfolderBase]: 16615/22403 cut-off events. [2024-10-13 07:11:36,563 INFO L125 PetriNetUnfolderBase]: For 29608/29656 co-relation queries the response was YES. [2024-10-13 07:11:36,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69000 conditions, 22403 events. 16615/22403 cut-off events. For 29608/29656 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 122884 event pairs, 4127 based on Foata normal form. 88/22376 useless extension candidates. Maximal degree in co-relation 53173. Up to 9177 conditions per place. [2024-10-13 07:11:36,793 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 123 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2024-10-13 07:11:36,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1021 flow [2024-10-13 07:11:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-13 07:11:36,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-13 07:11:36,796 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 405 flow. Second operand 5 states and 126 transitions. [2024-10-13 07:11:36,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1021 flow [2024-10-13 07:11:37,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 153 transitions, 974 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:37,060 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 504 flow [2024-10-13 07:11:37,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2024-10-13 07:11:37,061 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-10-13 07:11:37,061 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 504 flow [2024-10-13 07:11:37,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:37,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:37,062 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] [2024-10-13 07:11:37,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:11:37,062 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)] === [2024-10-13 07:11:37,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash -974718849, now seen corresponding path program 1 times [2024-10-13 07:11:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489684273] [2024-10-13 07:11:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:37,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:37,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:37,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489684273] [2024-10-13 07:11:37,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489684273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:37,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:37,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:11:37,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239778989] [2024-10-13 07:11:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:37,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:11:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:11:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:11:37,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-13 07:11:37,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-13 07:11:37,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:37,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-13 07:11:37,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:38,114 INFO L124 PetriNetUnfolderBase]: 11059/15265 cut-off events. [2024-10-13 07:11:38,115 INFO L125 PetriNetUnfolderBase]: For 28499/28750 co-relation queries the response was YES. [2024-10-13 07:11:38,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48884 conditions, 15265 events. 11059/15265 cut-off events. For 28499/28750 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 83395 event pairs, 3789 based on Foata normal form. 511/15595 useless extension candidates. Maximal degree in co-relation 43493. Up to 9103 conditions per place. [2024-10-13 07:11:38,230 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 94 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-10-13 07:11:38,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 111 transitions, 837 flow [2024-10-13 07:11:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:11:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:11:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-13 07:11:38,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-13 07:11:38,231 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 504 flow. Second operand 3 states and 82 transitions. [2024-10-13 07:11:38,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 111 transitions, 837 flow [2024-10-13 07:11:38,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 800 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:38,475 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 492 flow [2024-10-13 07:11:38,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2024-10-13 07:11:38,480 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-10-13 07:11:38,480 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 492 flow [2024-10-13 07:11:38,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-13 07:11:38,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:38,484 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] [2024-10-13 07:11:38,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:11:38,485 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)] === [2024-10-13 07:11:38,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:38,485 INFO L85 PathProgramCache]: Analyzing trace with hash 624714587, now seen corresponding path program 1 times [2024-10-13 07:11:38,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:38,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134457959] [2024-10-13 07:11:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:38,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:38,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134457959] [2024-10-13 07:11:38,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134457959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:38,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:38,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:11:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840164170] [2024-10-13 07:11:38,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:38,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:11:38,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:38,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:11:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:11:38,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-13 07:11:38,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-13 07:11:38,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:38,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-13 07:11:38,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:39,333 INFO L124 PetriNetUnfolderBase]: 9006/12572 cut-off events. [2024-10-13 07:11:39,334 INFO L125 PetriNetUnfolderBase]: For 20937/21092 co-relation queries the response was YES. [2024-10-13 07:11:39,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40116 conditions, 12572 events. 9006/12572 cut-off events. For 20937/21092 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 67226 event pairs, 2619 based on Foata normal form. 309/12754 useless extension candidates. Maximal degree in co-relation 36198. Up to 7318 conditions per place. [2024-10-13 07:11:39,421 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 92 selfloop transitions, 3 changer transitions 3/112 dead transitions. [2024-10-13 07:11:39,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 826 flow [2024-10-13 07:11:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:11:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:11:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-13 07:11:39,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-13 07:11:39,422 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 492 flow. Second operand 3 states and 78 transitions. [2024-10-13 07:11:39,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 826 flow [2024-10-13 07:11:39,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:39,475 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 472 flow [2024-10-13 07:11:39,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-10-13 07:11:39,476 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-10-13 07:11:39,476 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 472 flow [2024-10-13 07:11:39,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-13 07:11:39,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:39,476 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] [2024-10-13 07:11:39,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:11:39,477 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)] === [2024-10-13 07:11:39,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash -462380530, now seen corresponding path program 1 times [2024-10-13 07:11:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:39,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063978249] [2024-10-13 07:11:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:39,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:39,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063978249] [2024-10-13 07:11:39,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063978249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:39,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:39,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:11:39,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642571845] [2024-10-13 07:11:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:39,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:11:39,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:11:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:11:39,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-13 07:11:39,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 472 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:39,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:39,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-13 07:11:39,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:40,605 INFO L124 PetriNetUnfolderBase]: 10466/14189 cut-off events. [2024-10-13 07:11:40,605 INFO L125 PetriNetUnfolderBase]: For 20749/20779 co-relation queries the response was YES. [2024-10-13 07:11:40,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46152 conditions, 14189 events. 10466/14189 cut-off events. For 20749/20779 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 72821 event pairs, 3716 based on Foata normal form. 36/14221 useless extension candidates. Maximal degree in co-relation 41880. Up to 7734 conditions per place. [2024-10-13 07:11:40,703 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 103 selfloop transitions, 12 changer transitions 16/137 dead transitions. [2024-10-13 07:11:40,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 944 flow [2024-10-13 07:11:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-13 07:11:40,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-13 07:11:40,705 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 472 flow. Second operand 5 states and 128 transitions. [2024-10-13 07:11:40,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 944 flow [2024-10-13 07:11:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 137 transitions, 934 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 07:11:40,771 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 499 flow [2024-10-13 07:11:40,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-10-13 07:11:40,772 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-10-13 07:11:40,772 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 499 flow [2024-10-13 07:11:40,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:40,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:40,773 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] [2024-10-13 07:11:40,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:11:40,774 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)] === [2024-10-13 07:11:40,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:40,774 INFO L85 PathProgramCache]: Analyzing trace with hash -960797022, now seen corresponding path program 2 times [2024-10-13 07:11:40,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:40,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539549206] [2024-10-13 07:11:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539549206] [2024-10-13 07:11:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539549206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:11:40,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329295092] [2024-10-13 07:11:40,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:11:40,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:40,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:40,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:11:40,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:11:40,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:11:40,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:11:40,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:11:40,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:11:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:40,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:11:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:41,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329295092] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:11:41,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:11:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-13 07:11:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958930469] [2024-10-13 07:11:41,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:11:41,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:11:41,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:11:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:11:41,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:11:41,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 499 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2024-10-13 07:11:41,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:41,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:11:41,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:42,649 INFO L124 PetriNetUnfolderBase]: 14081/18750 cut-off events. [2024-10-13 07:11:42,650 INFO L125 PetriNetUnfolderBase]: For 32587/32587 co-relation queries the response was YES. [2024-10-13 07:11:42,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62174 conditions, 18750 events. 14081/18750 cut-off events. For 32587/32587 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 93939 event pairs, 715 based on Foata normal form. 174/18923 useless extension candidates. Maximal degree in co-relation 54261. Up to 3374 conditions per place. [2024-10-13 07:11:42,817 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 222 selfloop transitions, 71 changer transitions 2/298 dead transitions. [2024-10-13 07:11:42,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 298 transitions, 2020 flow [2024-10-13 07:11:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:11:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:11:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 320 transitions. [2024-10-13 07:11:42,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-13 07:11:42,819 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 499 flow. Second operand 14 states and 320 transitions. [2024-10-13 07:11:42,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 298 transitions, 2020 flow [2024-10-13 07:11:43,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 298 transitions, 1962 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-13 07:11:43,021 INFO L231 Difference]: Finished difference. Result has 94 places, 123 transitions, 1015 flow [2024-10-13 07:11:43,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1015, PETRI_PLACES=94, PETRI_TRANSITIONS=123} [2024-10-13 07:11:43,022 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-10-13 07:11:43,022 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 123 transitions, 1015 flow [2024-10-13 07:11:43,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2024-10-13 07:11:43,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:43,023 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] [2024-10-13 07:11:43,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 07:11:43,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-13 07:11:43,224 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)] === [2024-10-13 07:11:43,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash 555086900, now seen corresponding path program 4 times [2024-10-13 07:11:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:43,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50785111] [2024-10-13 07:11:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:43,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:43,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50785111] [2024-10-13 07:11:43,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50785111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:43,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:43,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:11:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557206774] [2024-10-13 07:11:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:43,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:11:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:11:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:11:43,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:11:43,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 123 transitions, 1015 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-10-13 07:11:43,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:43,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:11:43,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:44,748 INFO L124 PetriNetUnfolderBase]: 13817/18486 cut-off events. [2024-10-13 07:11:44,748 INFO L125 PetriNetUnfolderBase]: For 48369/48369 co-relation queries the response was YES. [2024-10-13 07:11:44,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68045 conditions, 18486 events. 13817/18486 cut-off events. For 48369/48369 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 93367 event pairs, 5052 based on Foata normal form. 110/18583 useless extension candidates. Maximal degree in co-relation 61597. Up to 11240 conditions per place. [2024-10-13 07:11:44,846 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 138 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-10-13 07:11:44,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 171 transitions, 1541 flow [2024-10-13 07:11:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-10-13 07:11:44,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-10-13 07:11:44,847 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 1015 flow. Second operand 5 states and 124 transitions. [2024-10-13 07:11:44,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 171 transitions, 1541 flow [2024-10-13 07:11:45,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 1467 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-10-13 07:11:45,058 INFO L231 Difference]: Finished difference. Result has 95 places, 122 transitions, 1003 flow [2024-10-13 07:11:45,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1003, PETRI_PLACES=95, PETRI_TRANSITIONS=122} [2024-10-13 07:11:45,059 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-10-13 07:11:45,059 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 122 transitions, 1003 flow [2024-10-13 07:11:45,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-10-13 07:11:45,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:45,059 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] [2024-10-13 07:11:45,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 07:11:45,060 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)] === [2024-10-13 07:11:45,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1478788968, now seen corresponding path program 3 times [2024-10-13 07:11:45,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:45,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679623866] [2024-10-13 07:11:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:45,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:45,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679623866] [2024-10-13 07:11:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679623866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:45,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:45,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:11:45,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414512459] [2024-10-13 07:11:45,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:45,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:11:45,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:11:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:11:45,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-13 07:11:45,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 122 transitions, 1003 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:45,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:45,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-13 07:11:45,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:46,135 INFO L124 PetriNetUnfolderBase]: 12918/17564 cut-off events. [2024-10-13 07:11:46,136 INFO L125 PetriNetUnfolderBase]: For 46295/46307 co-relation queries the response was YES. [2024-10-13 07:11:46,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64632 conditions, 17564 events. 12918/17564 cut-off events. For 46295/46307 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 93077 event pairs, 4387 based on Foata normal form. 44/17599 useless extension candidates. Maximal degree in co-relation 59203. Up to 9950 conditions per place. [2024-10-13 07:11:46,247 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 124 selfloop transitions, 31 changer transitions 2/175 dead transitions. [2024-10-13 07:11:46,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 175 transitions, 1576 flow [2024-10-13 07:11:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-10-13 07:11:46,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-13 07:11:46,248 INFO L175 Difference]: Start difference. First operand has 95 places, 122 transitions, 1003 flow. Second operand 5 states and 125 transitions. [2024-10-13 07:11:46,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 175 transitions, 1576 flow [2024-10-13 07:11:46,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 175 transitions, 1493 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:11:46,463 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1095 flow [2024-10-13 07:11:46,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1095, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2024-10-13 07:11:46,464 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-10-13 07:11:46,464 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1095 flow [2024-10-13 07:11:46,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:46,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:46,464 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] [2024-10-13 07:11:46,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 07:11:46,465 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)] === [2024-10-13 07:11:46,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash 860222506, now seen corresponding path program 4 times [2024-10-13 07:11:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666760639] [2024-10-13 07:11:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666760639] [2024-10-13 07:11:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666760639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:46,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:46,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:11:46,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86195041] [2024-10-13 07:11:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:46,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:11:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:11:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:11:46,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:11:46,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-13 07:11:46,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:46,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:11:46,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:47,597 INFO L124 PetriNetUnfolderBase]: 14332/19181 cut-off events. [2024-10-13 07:11:47,598 INFO L125 PetriNetUnfolderBase]: For 50455/50479 co-relation queries the response was YES. [2024-10-13 07:11:47,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71861 conditions, 19181 events. 14332/19181 cut-off events. For 50455/50479 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 97804 event pairs, 5221 based on Foata normal form. 126/19306 useless extension candidates. Maximal degree in co-relation 68911. Up to 11469 conditions per place. [2024-10-13 07:11:47,742 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 150 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-10-13 07:11:47,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 193 transitions, 1734 flow [2024-10-13 07:11:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:11:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:11:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-13 07:11:47,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-13 07:11:47,744 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1095 flow. Second operand 6 states and 145 transitions. [2024-10-13 07:11:47,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 193 transitions, 1734 flow [2024-10-13 07:11:47,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 1681 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-13 07:11:47,947 INFO L231 Difference]: Finished difference. Result has 102 places, 131 transitions, 1181 flow [2024-10-13 07:11:47,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1181, PETRI_PLACES=102, PETRI_TRANSITIONS=131} [2024-10-13 07:11:47,948 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-10-13 07:11:47,948 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 131 transitions, 1181 flow [2024-10-13 07:11:47,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-13 07:11:47,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:47,948 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] [2024-10-13 07:11:47,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 07:11:47,949 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)] === [2024-10-13 07:11:47,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash 679948238, now seen corresponding path program 5 times [2024-10-13 07:11:47,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:47,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144777068] [2024-10-13 07:11:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:48,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144777068] [2024-10-13 07:11:48,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144777068] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:11:48,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448118102] [2024-10-13 07:11:48,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:11:48,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:48,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:11:48,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:11:48,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:11:48,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:11:48,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:11:48,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:11:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:48,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:11:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:48,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448118102] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:11:48,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:11:48,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-13 07:11:48,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498370238] [2024-10-13 07:11:48,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:11:48,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:11:48,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:48,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:11:48,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:11:48,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:11:48,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 131 transitions, 1181 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 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) [2024-10-13 07:11:48,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:48,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:11:48,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:49,895 INFO L124 PetriNetUnfolderBase]: 18317/24367 cut-off events. [2024-10-13 07:11:49,895 INFO L125 PetriNetUnfolderBase]: For 59890/59890 co-relation queries the response was YES. [2024-10-13 07:11:50,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91680 conditions, 24367 events. 18317/24367 cut-off events. For 59890/59890 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 127432 event pairs, 1500 based on Foata normal form. 143/24509 useless extension candidates. Maximal degree in co-relation 88368. Up to 4569 conditions per place. [2024-10-13 07:11:50,091 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 258 selfloop transitions, 84 changer transitions 0/345 dead transitions. [2024-10-13 07:11:50,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 345 transitions, 2754 flow [2024-10-13 07:11:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 07:11:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 07:11:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 357 transitions. [2024-10-13 07:11:50,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-10-13 07:11:50,093 INFO L175 Difference]: Start difference. First operand has 102 places, 131 transitions, 1181 flow. Second operand 15 states and 357 transitions. [2024-10-13 07:11:50,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 345 transitions, 2754 flow [2024-10-13 07:11:50,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 345 transitions, 2696 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 07:11:50,420 INFO L231 Difference]: Finished difference. Result has 120 places, 154 transitions, 1617 flow [2024-10-13 07:11:50,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1617, PETRI_PLACES=120, PETRI_TRANSITIONS=154} [2024-10-13 07:11:50,421 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-10-13 07:11:50,421 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 154 transitions, 1617 flow [2024-10-13 07:11:50,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 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) [2024-10-13 07:11:50,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:50,421 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] [2024-10-13 07:11:50,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 07:11:50,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:50,622 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)] === [2024-10-13 07:11:50,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1357344238, now seen corresponding path program 5 times [2024-10-13 07:11:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182055028] [2024-10-13 07:11:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:50,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:50,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182055028] [2024-10-13 07:11:50,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182055028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:50,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:50,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:11:50,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523362543] [2024-10-13 07:11:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:50,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:11:50,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:11:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:11:50,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-13 07:11:50,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 154 transitions, 1617 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:50,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:50,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-13 07:11:50,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:52,116 INFO L124 PetriNetUnfolderBase]: 16716/22657 cut-off events. [2024-10-13 07:11:52,117 INFO L125 PetriNetUnfolderBase]: For 88287/88428 co-relation queries the response was YES. [2024-10-13 07:11:52,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91934 conditions, 22657 events. 16716/22657 cut-off events. For 88287/88428 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 124272 event pairs, 6424 based on Foata normal form. 80/22632 useless extension candidates. Maximal degree in co-relation 86602. Up to 15086 conditions per place. [2024-10-13 07:11:52,291 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 136 selfloop transitions, 28 changer transitions 11/199 dead transitions. [2024-10-13 07:11:52,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 199 transitions, 2136 flow [2024-10-13 07:11:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-13 07:11:52,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-10-13 07:11:52,293 INFO L175 Difference]: Start difference. First operand has 120 places, 154 transitions, 1617 flow. Second operand 5 states and 122 transitions. [2024-10-13 07:11:52,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 199 transitions, 2136 flow [2024-10-13 07:11:52,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2112 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 07:11:52,792 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1639 flow [2024-10-13 07:11:52,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1639, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-10-13 07:11:52,793 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-13 07:11:52,793 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1639 flow [2024-10-13 07:11:52,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:52,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:52,794 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] [2024-10-13 07:11:52,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 07:11:52,794 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:11:52,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:52,794 INFO L85 PathProgramCache]: Analyzing trace with hash 761143152, now seen corresponding path program 6 times [2024-10-13 07:11:52,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:52,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976467019] [2024-10-13 07:11:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:52,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:52,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:52,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976467019] [2024-10-13 07:11:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976467019] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:11:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027641568] [2024-10-13 07:11:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:52,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:11:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:11:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:11:52,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-13 07:11:52,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 1639 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:52,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:52,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-13 07:11:52,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:54,916 INFO L124 PetriNetUnfolderBase]: 16103/22033 cut-off events. [2024-10-13 07:11:54,916 INFO L125 PetriNetUnfolderBase]: For 97322/97502 co-relation queries the response was YES. [2024-10-13 07:11:55,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91142 conditions, 22033 events. 16103/22033 cut-off events. For 97322/97502 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 122704 event pairs, 4643 based on Foata normal form. 57/22017 useless extension candidates. Maximal degree in co-relation 85885. Up to 10173 conditions per place. [2024-10-13 07:11:55,216 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 131 selfloop transitions, 40 changer transitions 2/199 dead transitions. [2024-10-13 07:11:55,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 199 transitions, 2190 flow [2024-10-13 07:11:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-13 07:11:55,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-10-13 07:11:55,218 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1639 flow. Second operand 5 states and 123 transitions. [2024-10-13 07:11:55,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 199 transitions, 2190 flow [2024-10-13 07:11:55,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2126 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 07:11:55,996 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1669 flow [2024-10-13 07:11:55,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1669, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-10-13 07:11:55,997 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-13 07:11:55,997 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1669 flow [2024-10-13 07:11:55,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 07:11:55,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:55,997 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] [2024-10-13 07:11:55,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 07:11:55,998 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:11:55,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash 492202918, now seen corresponding path program 6 times [2024-10-13 07:11:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:55,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087298442] [2024-10-13 07:11:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:55,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:56,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:56,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087298442] [2024-10-13 07:11:56,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087298442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:56,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:11:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369302381] [2024-10-13 07:11:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:56,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:11:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:11:56,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:11:56,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:11:56,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 1669 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-13 07:11:56,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:56,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:11:56,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:58,277 INFO L124 PetriNetUnfolderBase]: 18791/24940 cut-off events. [2024-10-13 07:11:58,277 INFO L125 PetriNetUnfolderBase]: For 98376/98376 co-relation queries the response was YES. [2024-10-13 07:11:58,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101308 conditions, 24940 events. 18791/24940 cut-off events. For 98376/98376 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 129445 event pairs, 4706 based on Foata normal form. 230/25167 useless extension candidates. Maximal degree in co-relation 97617. Up to 10461 conditions per place. [2024-10-13 07:11:58,523 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 169 selfloop transitions, 45 changer transitions 1/218 dead transitions. [2024-10-13 07:11:58,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 218 transitions, 2372 flow [2024-10-13 07:11:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:11:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:11:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-10-13 07:11:58,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-13 07:11:58,525 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1669 flow. Second operand 6 states and 147 transitions. [2024-10-13 07:11:58,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 218 transitions, 2372 flow [2024-10-13 07:11:59,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2288 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-13 07:11:59,515 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1695 flow [2024-10-13 07:11:59,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1695, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-10-13 07:11:59,516 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-13 07:11:59,516 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1695 flow [2024-10-13 07:11:59,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-13 07:11:59,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:59,516 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] [2024-10-13 07:11:59,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 07:11:59,517 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:11:59,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash 933483450, now seen corresponding path program 7 times [2024-10-13 07:11:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:59,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862484040] [2024-10-13 07:11:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:59,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:59,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862484040] [2024-10-13 07:11:59,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862484040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:59,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:59,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:11:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073542264] [2024-10-13 07:11:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:59,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:11:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:11:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:11:59,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:11:59,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1695 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-13 07:11:59,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:59,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:11:59,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:01,042 INFO L124 PetriNetUnfolderBase]: 18283/24237 cut-off events. [2024-10-13 07:12:01,042 INFO L125 PetriNetUnfolderBase]: For 98372/98372 co-relation queries the response was YES. [2024-10-13 07:12:01,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98701 conditions, 24237 events. 18283/24237 cut-off events. For 98372/98372 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 125396 event pairs, 5472 based on Foata normal form. 143/24377 useless extension candidates. Maximal degree in co-relation 95483. Up to 12158 conditions per place. [2024-10-13 07:12:01,734 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 156 selfloop transitions, 49 changer transitions 1/209 dead transitions. [2024-10-13 07:12:01,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 209 transitions, 2301 flow [2024-10-13 07:12:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:12:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:12:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-10-13 07:12:01,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-13 07:12:01,736 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1695 flow. Second operand 6 states and 140 transitions. [2024-10-13 07:12:01,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 209 transitions, 2301 flow [2024-10-13 07:12:02,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 209 transitions, 2190 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-10-13 07:12:02,307 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1644 flow [2024-10-13 07:12:02,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1644, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-10-13 07:12:02,307 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-10-13 07:12:02,307 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1644 flow [2024-10-13 07:12:02,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-10-13 07:12:02,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:02,308 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] [2024-10-13 07:12:02,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 07:12:02,308 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:12:02,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1218718750, now seen corresponding path program 1 times [2024-10-13 07:12:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383812195] [2024-10-13 07:12:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:02,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383812195] [2024-10-13 07:12:02,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383812195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:02,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107400268] [2024-10-13 07:12:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:02,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:02,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:02,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:02,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:12:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:02,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 07:12:02,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:02,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:12:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107400268] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:02,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-10-13 07:12:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255079469] [2024-10-13 07:12:02,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:02,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:12:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:12:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:12:02,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-13 07:12:02,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1644 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-10-13 07:12:02,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:02,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-13 07:12:02,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:07,488 INFO L124 PetriNetUnfolderBase]: 37670/52655 cut-off events. [2024-10-13 07:12:07,489 INFO L125 PetriNetUnfolderBase]: For 252499/253791 co-relation queries the response was YES. [2024-10-13 07:12:07,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211471 conditions, 52655 events. 37670/52655 cut-off events. For 252499/253791 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 331642 event pairs, 3662 based on Foata normal form. 1864/54368 useless extension candidates. Maximal degree in co-relation 194979. Up to 19210 conditions per place. [2024-10-13 07:12:07,969 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 389 selfloop transitions, 22 changer transitions 4/463 dead transitions. [2024-10-13 07:12:07,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 463 transitions, 5621 flow [2024-10-13 07:12:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:12:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:12:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-10-13 07:12:07,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-10-13 07:12:07,970 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1644 flow. Second operand 7 states and 214 transitions. [2024-10-13 07:12:07,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 463 transitions, 5621 flow [2024-10-13 07:12:11,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 463 transitions, 4953 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-10-13 07:12:11,089 INFO L231 Difference]: Finished difference. Result has 116 places, 171 transitions, 1658 flow [2024-10-13 07:12:11,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1658, PETRI_PLACES=116, PETRI_TRANSITIONS=171} [2024-10-13 07:12:11,090 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-10-13 07:12:11,090 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 171 transitions, 1658 flow [2024-10-13 07:12:11,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-10-13 07:12:11,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:11,090 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] [2024-10-13 07:12:11,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 07:12:11,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 07:12:11,291 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:12:11,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 836886338, now seen corresponding path program 2 times [2024-10-13 07:12:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:11,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557825277] [2024-10-13 07:12:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:11,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:11,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557825277] [2024-10-13 07:12:11,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557825277] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:11,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064810189] [2024-10-13 07:12:11,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:12:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:11,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:12:11,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:12:11,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:12:11,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:11,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 07:12:11,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:11,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:12:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064810189] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:12:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-13 07:12:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776889685] [2024-10-13 07:12:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:11,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:12:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:12:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:12:11,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-13 07:12:11,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 171 transitions, 1658 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-10-13 07:12:11,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:11,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-13 07:12:11,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:17,401 INFO L124 PetriNetUnfolderBase]: 52194/73013 cut-off events. [2024-10-13 07:12:17,402 INFO L125 PetriNetUnfolderBase]: For 287927/289335 co-relation queries the response was YES. [2024-10-13 07:12:17,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291060 conditions, 73013 events. 52194/73013 cut-off events. For 287927/289335 co-relation queries the response was YES. Maximal size of possible extension queue 2710. Compared 481395 event pairs, 9432 based on Foata normal form. 545/73339 useless extension candidates. Maximal degree in co-relation 263266. Up to 49393 conditions per place. [2024-10-13 07:12:18,268 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 255 selfloop transitions, 13 changer transitions 1/317 dead transitions. [2024-10-13 07:12:18,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 317 transitions, 3567 flow [2024-10-13 07:12:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:12:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:12:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-13 07:12:18,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.73125 [2024-10-13 07:12:18,269 INFO L175 Difference]: Start difference. First operand has 116 places, 171 transitions, 1658 flow. Second operand 4 states and 117 transitions. [2024-10-13 07:12:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 317 transitions, 3567 flow [2024-10-13 07:12:21,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 317 transitions, 3507 flow, removed 30 selfloop flow, removed 0 redundant places. [2024-10-13 07:12:21,858 INFO L231 Difference]: Finished difference. Result has 120 places, 181 transitions, 1723 flow [2024-10-13 07:12:21,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1723, PETRI_PLACES=120, PETRI_TRANSITIONS=181} [2024-10-13 07:12:21,859 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-10-13 07:12:21,859 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 181 transitions, 1723 flow [2024-10-13 07:12:21,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-10-13 07:12:21,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:21,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:21,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 07:12:22,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 07:12:22,060 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:12:22,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1614370837, now seen corresponding path program 1 times [2024-10-13 07:12:22,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:22,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456060628] [2024-10-13 07:12:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:12:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456060628] [2024-10-13 07:12:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456060628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:22,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:22,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:12:22,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862612160] [2024-10-13 07:12:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:22,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:12:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:12:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:12:22,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-13 07:12:22,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 181 transitions, 1723 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2024-10-13 07:12:22,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:22,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-13 07:12:22,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand