./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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 ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:18:14,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:18:14,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:18:14,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:18:14,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:18:14,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:18:14,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:18:14,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:18:14,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:18:14,862 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:18:14,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:18:14,863 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:18:14,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:18:14,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:18:14,867 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:18:14,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:18:14,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:18:14,868 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:18:14,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:18:14,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:18:14,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:18:14,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:18:14,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:18:14,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:18:14,870 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:18:14,870 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:18:14,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:18:14,871 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:18:14,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:18:14,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:18:14,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:18:14,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:18:14,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:14,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:18:14,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:18:14,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:18:14,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:18:14,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:18:14,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:18:14,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:18:14,874 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:18:14,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:18:14,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:18:14,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-06-27 16:18:15,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:18:15,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:18:15,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:18:15,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:18:15,115 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:18:15,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2024-06-27 16:18:16,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:18:16,398 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:18:16,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2024-06-27 16:18:16,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd3b60f2/be2f8f1ebc6d4d05ae8106acfee903c2/FLAGa64fdc48e [2024-06-27 16:18:16,419 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd3b60f2/be2f8f1ebc6d4d05ae8106acfee903c2 [2024-06-27 16:18:16,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:18:16,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:18:16,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:16,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:18:16,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:18:16,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78dbec85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16, skipping insertion in model container [2024-06-27 16:18:16,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:18:16,816 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2024-06-27 16:18:16,821 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:16,827 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:18:16,865 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2024-06-27 16:18:16,867 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:16,898 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:18:16,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16 WrapperNode [2024-06-27 16:18:16,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:16,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:16,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:18:16,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:18:16,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,947 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-06-27 16:18:16,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:16,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:18:16,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:18:16,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:18:16,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,973 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]. [2024-06-27 16:18:16,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:18:16,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:18:16,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:18:16,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:18:16,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (1/1) ... [2024-06-27 16:18:16,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:17,023 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) [2024-06-27 16:18:17,043 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 [2024-06-27 16:18:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-27 16:18:17,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-27 16:18:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-27 16:18:17,065 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-27 16:18:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:18:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:18:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:18:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:18:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:18:17,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:18:17,066 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:18:17,153 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:18:17,155 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:18:17,250 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:18:17,250 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:18:17,316 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:18:17,316 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 16:18:17,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:17 BoogieIcfgContainer [2024-06-27 16:18:17,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:18:17,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:18:17,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:18:17,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:18:17,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:18:16" (1/3) ... [2024-06-27 16:18:17,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666959ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:17, skipping insertion in model container [2024-06-27 16:18:17,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:16" (2/3) ... [2024-06-27 16:18:17,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666959ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:17, skipping insertion in model container [2024-06-27 16:18:17,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:17" (3/3) ... [2024-06-27 16:18:17,323 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-06-27 16:18:17,329 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:18:17,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:18:17,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:18:17,337 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:18:17,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:18:17,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-06-27 16:18:17,429 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-06-27 16:18:17,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:18:17,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-06-27 16:18:17,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-06-27 16:18:17,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-06-27 16:18:17,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:18:17,448 INFO L357 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, mHoare=true, 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;@4a0af53a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:18:17,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 16:18:17,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:18:17,454 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-06-27 16:18:17,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:18:17,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:17,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:17,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:17,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-06-27 16:18:17,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:17,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59501229] [2024-06-27 16:18:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:17,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59501229] [2024-06-27 16:18:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59501229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:17,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:17,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:18:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747428460] [2024-06-27 16:18:17,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:17,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:18:17,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:18:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:18:17,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:17,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-06-27 16:18:17,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:17,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:17,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:18,123 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-06-27 16:18:18,123 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 16:18:18,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2179 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-06-27 16:18:18,128 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-06-27 16:18:18,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-06-27 16:18:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:18:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:18:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-27 16:18:18,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 16:18:18,147 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-06-27 16:18:18,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-06-27 16:18:18,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:18:18,151 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-06-27 16:18:18,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-06-27 16:18:18,163 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-06-27 16:18:18,163 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-06-27 16:18:18,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-06-27 16:18:18,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:18,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:18,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:18:18,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:18,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:18,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-06-27 16:18:18,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:18,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688096061] [2024-06-27 16:18:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:18,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:18,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:18,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688096061] [2024-06-27 16:18:18,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688096061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:18,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:18,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:18:18,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387350580] [2024-06-27 16:18:18,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:18,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:18,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:18,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:18,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:18,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-06-27 16:18:18,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:18,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:18,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:18,514 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-06-27 16:18:18,514 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-06-27 16:18:18,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2915 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-06-27 16:18:18,522 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-06-27 16:18:18,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-06-27 16:18:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:18:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:18:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 16:18:18,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 16:18:18,525 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-06-27 16:18:18,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-06-27 16:18:18,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 16:18:18,533 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-06-27 16:18:18,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-27 16:18:18,534 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-06-27 16:18:18,534 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-06-27 16:18:18,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-06-27 16:18:18,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:18,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:18,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:18:18,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:18,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-06-27 16:18:18,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:18,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850829376] [2024-06-27 16:18:18,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:18,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:18,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:18,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850829376] [2024-06-27 16:18:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850829376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:18,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:18,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:18:18,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116339699] [2024-06-27 16:18:18,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:18,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:18,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:18,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:18,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:18,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:18,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-06-27 16:18:18,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:18,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:18,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:18,826 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-06-27 16:18:18,826 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-06-27 16:18:18,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2538 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-06-27 16:18:18,829 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-06-27 16:18:18,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-06-27 16:18:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:18:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:18:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 16:18:18,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-27 16:18:18,833 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-06-27 16:18:18,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-06-27 16:18:18,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 16:18:18,840 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-06-27 16:18:18,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-06-27 16:18:18,841 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-06-27 16:18:18,841 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-06-27 16:18:18,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-06-27 16:18:18,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:18,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:18,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:18:18,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:18,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-06-27 16:18:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314117963] [2024-06-27 16:18:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:18,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:18,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:18,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314117963] [2024-06-27 16:18:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314117963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:18,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:18,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890149179] [2024-06-27 16:18:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:18,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:18:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:18:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:18:18,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:18,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-27 16:18:18,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:18,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:19,136 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-06-27 16:18:19,137 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-06-27 16:18:19,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 659 events. 355/659 cut-off events. For 1815/1827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2860 event pairs, 80 based on Foata normal form. 21/679 useless extension candidates. Maximal degree in co-relation 2039. Up to 258 conditions per place. [2024-06-27 16:18:19,140 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-06-27 16:18:19,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-06-27 16:18:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:18:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:18:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 16:18:19,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-27 16:18:19,143 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-06-27 16:18:19,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-06-27 16:18:19,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 16:18:19,150 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-06-27 16:18:19,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-27 16:18:19,152 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-06-27 16:18:19,153 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-06-27 16:18:19,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-27 16:18:19,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:19,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:18:19,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:19,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-06-27 16:18:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484318447] [2024-06-27 16:18:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:19,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484318447] [2024-06-27 16:18:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484318447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:19,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553178327] [2024-06-27 16:18:19,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:18:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:18:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:18:19,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:19,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-27 16:18:19,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:19,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:19,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:19,438 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-06-27 16:18:19,438 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-06-27 16:18:19,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 971 events. 526/971 cut-off events. For 3328/3340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4538 event pairs, 53 based on Foata normal form. 39/1007 useless extension candidates. Maximal degree in co-relation 3160. Up to 256 conditions per place. [2024-06-27 16:18:19,443 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-06-27 16:18:19,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-06-27 16:18:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:18:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:18:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 16:18:19,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-06-27 16:18:19,445 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-06-27 16:18:19,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-06-27 16:18:19,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 16:18:19,450 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-06-27 16:18:19,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-06-27 16:18:19,451 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-06-27 16:18:19,451 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-06-27 16:18:19,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-27 16:18:19,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:19,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:19,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:18:19,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:19,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-06-27 16:18:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:19,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313866846] [2024-06-27 16:18:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:19,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:19,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313866846] [2024-06-27 16:18:19,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313866846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:19,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:19,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:19,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516013558] [2024-06-27 16:18:19,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:19,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:18:19,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:19,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:18:19,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:18:19,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:19,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-27 16:18:19,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:19,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:19,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:19,730 INFO L124 PetriNetUnfolderBase]: 499/926 cut-off events. [2024-06-27 16:18:19,730 INFO L125 PetriNetUnfolderBase]: For 5506/5518 co-relation queries the response was YES. [2024-06-27 16:18:19,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 926 events. 499/926 cut-off events. For 5506/5518 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4319 event pairs, 59 based on Foata normal form. 57/980 useless extension candidates. Maximal degree in co-relation 3487. Up to 157 conditions per place. [2024-06-27 16:18:19,734 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 27 changer transitions 33/108 dead transitions. [2024-06-27 16:18:19,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 108 transitions, 999 flow [2024-06-27 16:18:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:18:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:18:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 16:18:19,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-06-27 16:18:19,736 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 11 states and 138 transitions. [2024-06-27 16:18:19,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 108 transitions, 999 flow [2024-06-27 16:18:19,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 931 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 16:18:19,744 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 514 flow [2024-06-27 16:18:19,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=514, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-06-27 16:18:19,745 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-06-27 16:18:19,745 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 514 flow [2024-06-27 16:18:19,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-27 16:18:19,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:19,745 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:19,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:18:19,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:19,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-06-27 16:18:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:19,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662744248] [2024-06-27 16:18:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:19,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:19,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662744248] [2024-06-27 16:18:19,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662744248] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:19,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327237691] [2024-06-27 16:18:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:19,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:19,824 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) [2024-06-27 16:18:19,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:18:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:19,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 16:18:19,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:19,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:20,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327237691] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:20,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:20,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-06-27 16:18:20,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633864367] [2024-06-27 16:18:20,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:20,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 16:18:20,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 16:18:20,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 16:18:20,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:20,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 514 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-06-27 16:18:20,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:20,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:20,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:20,501 INFO L124 PetriNetUnfolderBase]: 607/1136 cut-off events. [2024-06-27 16:18:20,502 INFO L125 PetriNetUnfolderBase]: For 10981/10993 co-relation queries the response was YES. [2024-06-27 16:18:20,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 1136 events. 607/1136 cut-off events. For 10981/10993 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5008 event pairs, 149 based on Foata normal form. 75/1210 useless extension candidates. Maximal degree in co-relation 4852. Up to 522 conditions per place. [2024-06-27 16:18:20,507 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 19 changer transitions 67/156 dead transitions. [2024-06-27 16:18:20,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 156 transitions, 1590 flow [2024-06-27 16:18:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 16:18:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 16:18:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-06-27 16:18:20,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-27 16:18:20,509 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 514 flow. Second operand 19 states and 231 transitions. [2024-06-27 16:18:20,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 156 transitions, 1590 flow [2024-06-27 16:18:20,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 156 transitions, 1489 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 16:18:20,521 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 646 flow [2024-06-27 16:18:20,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=646, PETRI_PLACES=92, PETRI_TRANSITIONS=56} [2024-06-27 16:18:20,522 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-06-27 16:18:20,522 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 646 flow [2024-06-27 16:18:20,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-06-27 16:18:20,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:20,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:20,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 16:18:20,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:20,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:20,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash -827216793, now seen corresponding path program 2 times [2024-06-27 16:18:20,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:20,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848048422] [2024-06-27 16:18:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:20,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848048422] [2024-06-27 16:18:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848048422] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268897352] [2024-06-27 16:18:20,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:18:20,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:20,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:20,828 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) [2024-06-27 16:18:20,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:18:20,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:18:20,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:20,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 16:18:20,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:20,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:20,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268897352] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:20,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:20,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-06-27 16:18:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468701946] [2024-06-27 16:18:20,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:20,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 16:18:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:20,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 16:18:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 16:18:20,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:20,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 56 transitions, 646 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-06-27 16:18:20,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:20,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:20,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:21,470 INFO L124 PetriNetUnfolderBase]: 895/1655 cut-off events. [2024-06-27 16:18:21,470 INFO L125 PetriNetUnfolderBase]: For 37310/37322 co-relation queries the response was YES. [2024-06-27 16:18:21,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9389 conditions, 1655 events. 895/1655 cut-off events. For 37310/37322 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8056 event pairs, 68 based on Foata normal form. 84/1738 useless extension candidates. Maximal degree in co-relation 9342. Up to 315 conditions per place. [2024-06-27 16:18:21,481 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 49 changer transitions 80/220 dead transitions. [2024-06-27 16:18:21,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 220 transitions, 2852 flow [2024-06-27 16:18:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-06-27 16:18:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-06-27 16:18:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-06-27 16:18:21,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-27 16:18:21,483 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 646 flow. Second operand 27 states and 334 transitions. [2024-06-27 16:18:21,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 220 transitions, 2852 flow [2024-06-27 16:18:21,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 220 transitions, 2305 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-06-27 16:18:21,510 INFO L231 Difference]: Finished difference. Result has 118 places, 72 transitions, 1051 flow [2024-06-27 16:18:21,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1051, PETRI_PLACES=118, PETRI_TRANSITIONS=72} [2024-06-27 16:18:21,513 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-06-27 16:18:21,513 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 72 transitions, 1051 flow [2024-06-27 16:18:21,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-06-27 16:18:21,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:21,513 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:21,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:21,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-06-27 16:18:21,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:21,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1859448120, now seen corresponding path program 1 times [2024-06-27 16:18:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768398780] [2024-06-27 16:18:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768398780] [2024-06-27 16:18:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768398780] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582968909] [2024-06-27 16:18:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:21,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:21,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:21,815 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) [2024-06-27 16:18:21,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:18:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:21,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 16:18:21,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:21,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582968909] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:21,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:21,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-06-27 16:18:21,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666124851] [2024-06-27 16:18:21,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:21,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:18:21,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:18:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:18:22,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:22,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 72 transitions, 1051 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-06-27 16:18:22,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:22,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:22,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:22,515 INFO L124 PetriNetUnfolderBase]: 1129/2124 cut-off events. [2024-06-27 16:18:22,515 INFO L125 PetriNetUnfolderBase]: For 87490/87496 co-relation queries the response was YES. [2024-06-27 16:18:22,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 2124 events. 1129/2124 cut-off events. For 87490/87496 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11125 event pairs, 153 based on Foata normal form. 69/2190 useless extension candidates. Maximal degree in co-relation 14720. Up to 490 conditions per place. [2024-06-27 16:18:22,533 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 53 changer transitions 67/222 dead transitions. [2024-06-27 16:18:22,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 222 transitions, 3667 flow [2024-06-27 16:18:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-06-27 16:18:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-06-27 16:18:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-06-27 16:18:22,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-27 16:18:22,535 INFO L175 Difference]: Start difference. First operand has 118 places, 72 transitions, 1051 flow. Second operand 25 states and 309 transitions. [2024-06-27 16:18:22,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 222 transitions, 3667 flow [2024-06-27 16:18:22,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 222 transitions, 3084 flow, removed 275 selfloop flow, removed 13 redundant places. [2024-06-27 16:18:22,593 INFO L231 Difference]: Finished difference. Result has 136 places, 83 transitions, 1339 flow [2024-06-27 16:18:22,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1339, PETRI_PLACES=136, PETRI_TRANSITIONS=83} [2024-06-27 16:18:22,594 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2024-06-27 16:18:22,595 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 83 transitions, 1339 flow [2024-06-27 16:18:22,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-06-27 16:18:22,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:22,595 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:22,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:22,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:22,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:22,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2089657410, now seen corresponding path program 2 times [2024-06-27 16:18:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:22,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385012154] [2024-06-27 16:18:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:22,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:22,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:22,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385012154] [2024-06-27 16:18:22,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385012154] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169526159] [2024-06-27 16:18:22,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:18:22,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:22,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:22,891 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) [2024-06-27 16:18:22,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:18:22,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:18:22,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:22,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 16:18:22,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:22,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169526159] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:23,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:23,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-06-27 16:18:23,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149645923] [2024-06-27 16:18:23,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:23,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:18:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:18:23,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:18:23,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:23,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 83 transitions, 1339 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-06-27 16:18:23,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:23,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:23,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:23,704 INFO L124 PetriNetUnfolderBase]: 1246/2377 cut-off events. [2024-06-27 16:18:23,704 INFO L125 PetriNetUnfolderBase]: For 139322/139328 co-relation queries the response was YES. [2024-06-27 16:18:23,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17840 conditions, 2377 events. 1246/2377 cut-off events. For 139322/139328 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12696 event pairs, 38 based on Foata normal form. 141/2517 useless extension candidates. Maximal degree in co-relation 17775. Up to 501 conditions per place. [2024-06-27 16:18:23,727 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 92 selfloop transitions, 80 changer transitions 102/277 dead transitions. [2024-06-27 16:18:23,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 277 transitions, 5245 flow [2024-06-27 16:18:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-06-27 16:18:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-06-27 16:18:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 369 transitions. [2024-06-27 16:18:23,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 16:18:23,730 INFO L175 Difference]: Start difference. First operand has 136 places, 83 transitions, 1339 flow. Second operand 30 states and 369 transitions. [2024-06-27 16:18:23,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 277 transitions, 5245 flow [2024-06-27 16:18:23,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 4471 flow, removed 349 selfloop flow, removed 18 redundant places. [2024-06-27 16:18:23,833 INFO L231 Difference]: Finished difference. Result has 159 places, 104 transitions, 1972 flow [2024-06-27 16:18:23,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1972, PETRI_PLACES=159, PETRI_TRANSITIONS=104} [2024-06-27 16:18:23,834 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2024-06-27 16:18:23,834 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 104 transitions, 1972 flow [2024-06-27 16:18:23,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-06-27 16:18:23,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:23,834 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:23,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:24,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:24,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:24,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash -876448546, now seen corresponding path program 3 times [2024-06-27 16:18:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:24,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607429041] [2024-06-27 16:18:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:24,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:24,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607429041] [2024-06-27 16:18:24,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607429041] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:24,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540267483] [2024-06-27 16:18:24,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:18:24,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:24,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:24,195 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) [2024-06-27 16:18:24,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 16:18:24,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-27 16:18:24,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:24,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-27 16:18:24,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:24,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540267483] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:24,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:24,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-06-27 16:18:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190217118] [2024-06-27 16:18:24,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:24,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 16:18:24,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 16:18:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-06-27 16:18:24,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:24,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 104 transitions, 1972 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-06-27 16:18:24,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:24,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:24,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:25,713 INFO L124 PetriNetUnfolderBase]: 1714/3171 cut-off events. [2024-06-27 16:18:25,713 INFO L125 PetriNetUnfolderBase]: For 260933/260939 co-relation queries the response was YES. [2024-06-27 16:18:25,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27544 conditions, 3171 events. 1714/3171 cut-off events. For 260933/260939 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15980 event pairs, 42 based on Foata normal form. 96/3266 useless extension candidates. Maximal degree in co-relation 27469. Up to 678 conditions per place. [2024-06-27 16:18:25,743 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 142 selfloop transitions, 114 changer transitions 135/394 dead transitions. [2024-06-27 16:18:25,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 394 transitions, 8422 flow [2024-06-27 16:18:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-06-27 16:18:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-06-27 16:18:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 565 transitions. [2024-06-27 16:18:25,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117753623188406 [2024-06-27 16:18:25,748 INFO L175 Difference]: Start difference. First operand has 159 places, 104 transitions, 1972 flow. Second operand 46 states and 565 transitions. [2024-06-27 16:18:25,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 394 transitions, 8422 flow [2024-06-27 16:18:25,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 394 transitions, 7107 flow, removed 626 selfloop flow, removed 20 redundant places. [2024-06-27 16:18:25,942 INFO L231 Difference]: Finished difference. Result has 204 places, 138 transitions, 3067 flow [2024-06-27 16:18:25,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3067, PETRI_PLACES=204, PETRI_TRANSITIONS=138} [2024-06-27 16:18:25,943 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-06-27 16:18:25,943 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 138 transitions, 3067 flow [2024-06-27 16:18:25,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-06-27 16:18:25,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:25,944 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:25,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-06-27 16:18:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-06-27 16:18:26,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:26,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash -336419707, now seen corresponding path program 4 times [2024-06-27 16:18:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:26,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763500849] [2024-06-27 16:18:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763500849] [2024-06-27 16:18:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763500849] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311299098] [2024-06-27 16:18:26,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:18:26,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:26,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:26,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:26,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 16:18:26,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:18:26,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:26,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2024-06-27 16:18:26,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:26,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311299098] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:26,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:26,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-06-27 16:18:26,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4858583] [2024-06-27 16:18:26,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:26,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-06-27 16:18:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-06-27 16:18:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2024-06-27 16:18:26,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:26,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 138 transitions, 3067 flow. Second operand has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:26,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:26,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:26,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:28,746 INFO L124 PetriNetUnfolderBase]: 2218/4260 cut-off events. [2024-06-27 16:18:28,746 INFO L125 PetriNetUnfolderBase]: For 591236/591242 co-relation queries the response was YES. [2024-06-27 16:18:28,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45837 conditions, 4260 events. 2218/4260 cut-off events. For 591236/591242 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 22124 event pairs, 421 based on Foata normal form. 159/4416 useless extension candidates. Maximal degree in co-relation 45745. Up to 1483 conditions per place. [2024-06-27 16:18:28,789 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 190 selfloop transitions, 101 changer transitions 189/483 dead transitions. [2024-06-27 16:18:28,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 483 transitions, 13822 flow [2024-06-27 16:18:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-06-27 16:18:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-06-27 16:18:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 653 transitions. [2024-06-27 16:18:28,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946969696969697 [2024-06-27 16:18:28,795 INFO L175 Difference]: Start difference. First operand has 204 places, 138 transitions, 3067 flow. Second operand 55 states and 653 transitions. [2024-06-27 16:18:28,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 483 transitions, 13822 flow [2024-06-27 16:18:29,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 483 transitions, 10112 flow, removed 1813 selfloop flow, removed 29 redundant places. [2024-06-27 16:18:29,311 INFO L231 Difference]: Finished difference. Result has 252 places, 180 transitions, 3965 flow [2024-06-27 16:18:29,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3965, PETRI_PLACES=252, PETRI_TRANSITIONS=180} [2024-06-27 16:18:29,312 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 226 predicate places. [2024-06-27 16:18:29,312 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 180 transitions, 3965 flow [2024-06-27 16:18:29,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:29,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:29,312 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:29,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:29,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:29,526 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:29,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2049425977, now seen corresponding path program 5 times [2024-06-27 16:18:29,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:29,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944685359] [2024-06-27 16:18:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:29,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:29,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944685359] [2024-06-27 16:18:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944685359] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782943391] [2024-06-27 16:18:29,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:18:29,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:29,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:29,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 16:18:29,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-06-27 16:18:29,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:29,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2024-06-27 16:18:29,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:29,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:30,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782943391] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:30,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:30,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-06-27 16:18:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960380390] [2024-06-27 16:18:30,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:30,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-06-27 16:18:30,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:30,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-06-27 16:18:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-06-27 16:18:30,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:30,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 180 transitions, 3965 flow. Second operand has 36 states, 36 states have (on average 7.083333333333333) internal successors, (255), 36 states have internal predecessors, (255), 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) [2024-06-27 16:18:30,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:30,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:30,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:32,605 INFO L124 PetriNetUnfolderBase]: 2767/5513 cut-off events. [2024-06-27 16:18:32,605 INFO L125 PetriNetUnfolderBase]: For 986686/986692 co-relation queries the response was YES. [2024-06-27 16:18:32,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61510 conditions, 5513 events. 2767/5513 cut-off events. For 986686/986692 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31211 event pairs, 194 based on Foata normal form. 159/5671 useless extension candidates. Maximal degree in co-relation 61403. Up to 1380 conditions per place. [2024-06-27 16:18:32,665 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 180 selfloop transitions, 193 changer transitions 201/577 dead transitions. [2024-06-27 16:18:32,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 577 transitions, 16555 flow [2024-06-27 16:18:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-06-27 16:18:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-06-27 16:18:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 730 transitions. [2024-06-27 16:18:32,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49863387978142076 [2024-06-27 16:18:32,667 INFO L175 Difference]: Start difference. First operand has 252 places, 180 transitions, 3965 flow. Second operand 61 states and 730 transitions. [2024-06-27 16:18:32,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 577 transitions, 16555 flow [2024-06-27 16:18:34,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 577 transitions, 14025 flow, removed 1228 selfloop flow, removed 31 redundant places. [2024-06-27 16:18:34,078 INFO L231 Difference]: Finished difference. Result has 300 places, 241 transitions, 5990 flow [2024-06-27 16:18:34,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=5990, PETRI_PLACES=300, PETRI_TRANSITIONS=241} [2024-06-27 16:18:34,079 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 274 predicate places. [2024-06-27 16:18:34,079 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 241 transitions, 5990 flow [2024-06-27 16:18:34,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.083333333333333) internal successors, (255), 36 states have internal predecessors, (255), 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) [2024-06-27 16:18:34,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:34,080 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:34,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-06-27 16:18:34,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:34,286 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:34,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1408442027, now seen corresponding path program 6 times [2024-06-27 16:18:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:34,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255228178] [2024-06-27 16:18:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255228178] [2024-06-27 16:18:34,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255228178] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625021345] [2024-06-27 16:18:34,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:18:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:34,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:34,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:34,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 16:18:34,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-06-27 16:18:34,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:34,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2024-06-27 16:18:34,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:34,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625021345] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:34,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:34,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-06-27 16:18:34,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862437606] [2024-06-27 16:18:34,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:34,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-06-27 16:18:34,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-06-27 16:18:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-06-27 16:18:35,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:35,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 241 transitions, 5990 flow. Second operand has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:35,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:35,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:35,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:38,024 INFO L124 PetriNetUnfolderBase]: 3694/7306 cut-off events. [2024-06-27 16:18:38,129 INFO L125 PetriNetUnfolderBase]: For 1943250/1943256 co-relation queries the response was YES. [2024-06-27 16:18:38,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95686 conditions, 7306 events. 3694/7306 cut-off events. For 1943250/1943256 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 42737 event pairs, 83 based on Foata normal form. 159/7462 useless extension candidates. Maximal degree in co-relation 95561. Up to 1827 conditions per place. [2024-06-27 16:18:38,202 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 226 selfloop transitions, 274 changer transitions 205/708 dead transitions. [2024-06-27 16:18:38,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 708 transitions, 23646 flow [2024-06-27 16:18:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-06-27 16:18:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-06-27 16:18:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 868 transitions. [2024-06-27 16:18:38,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093896713615024 [2024-06-27 16:18:38,205 INFO L175 Difference]: Start difference. First operand has 300 places, 241 transitions, 5990 flow. Second operand 71 states and 868 transitions. [2024-06-27 16:18:38,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 708 transitions, 23646 flow [2024-06-27 16:18:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 708 transitions, 19791 flow, removed 1881 selfloop flow, removed 31 redundant places. [2024-06-27 16:18:40,371 INFO L231 Difference]: Finished difference. Result has 364 places, 302 transitions, 8507 flow [2024-06-27 16:18:40,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4531, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=8507, PETRI_PLACES=364, PETRI_TRANSITIONS=302} [2024-06-27 16:18:40,372 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 338 predicate places. [2024-06-27 16:18:40,372 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 302 transitions, 8507 flow [2024-06-27 16:18:40,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:40,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:40,373 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:40,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:40,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-06-27 16:18:40,573 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:40,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2127010885, now seen corresponding path program 7 times [2024-06-27 16:18:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404404365] [2024-06-27 16:18:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404404365] [2024-06-27 16:18:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404404365] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:40,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994180248] [2024-06-27 16:18:40,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 16:18:40,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:40,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:40,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:40,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-27 16:18:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:40,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2024-06-27 16:18:40,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:40,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994180248] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:41,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-06-27 16:18:41,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978070580] [2024-06-27 16:18:41,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:41,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-06-27 16:18:41,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-06-27 16:18:41,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2024-06-27 16:18:41,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:41,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 302 transitions, 8507 flow. Second operand has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 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) [2024-06-27 16:18:41,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:41,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:41,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:47,103 INFO L124 PetriNetUnfolderBase]: 5170/10176 cut-off events. [2024-06-27 16:18:47,103 INFO L125 PetriNetUnfolderBase]: For 4206677/4206683 co-relation queries the response was YES. [2024-06-27 16:18:47,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160013 conditions, 10176 events. 5170/10176 cut-off events. For 4206677/4206683 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 59641 event pairs, 52 based on Foata normal form. 330/10505 useless extension candidates. Maximal degree in co-relation 159862. Up to 2574 conditions per place. [2024-06-27 16:18:47,246 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 314 selfloop transitions, 388 changer transitions 335/1040 dead transitions. [2024-06-27 16:18:47,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1040 transitions, 42789 flow [2024-06-27 16:18:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-06-27 16:18:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-06-27 16:18:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1297 transitions. [2024-06-27 16:18:47,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098270440251572 [2024-06-27 16:18:47,250 INFO L175 Difference]: Start difference. First operand has 364 places, 302 transitions, 8507 flow. Second operand 106 states and 1297 transitions. [2024-06-27 16:18:47,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1040 transitions, 42789 flow [2024-06-27 16:18:51,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1040 transitions, 34169 flow, removed 4215 selfloop flow, removed 36 redundant places. [2024-06-27 16:18:51,628 INFO L231 Difference]: Finished difference. Result has 481 places, 416 transitions, 13673 flow [2024-06-27 16:18:51,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6103, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=13673, PETRI_PLACES=481, PETRI_TRANSITIONS=416} [2024-06-27 16:18:51,629 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 455 predicate places. [2024-06-27 16:18:51,629 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 416 transitions, 13673 flow [2024-06-27 16:18:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 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) [2024-06-27 16:18:51,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:51,629 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:51,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:51,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-06-27 16:18:51,830 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:51,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:51,830 INFO L85 PathProgramCache]: Analyzing trace with hash 174493553, now seen corresponding path program 8 times [2024-06-27 16:18:51,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:51,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128371311] [2024-06-27 16:18:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:51,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:52,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128371311] [2024-06-27 16:18:52,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128371311] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277700353] [2024-06-27 16:18:52,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:18:52,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:52,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:52,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:52,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-06-27 16:18:52,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:18:52,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:52,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 43 conjunts are in the unsatisfiable core [2024-06-27 16:18:52,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:52,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:53,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277700353] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:53,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:53,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 80 [2024-06-27 16:18:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571939099] [2024-06-27 16:18:53,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:53,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-06-27 16:18:53,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-06-27 16:18:53,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=4979, Unknown=0, NotChecked=0, Total=6480 [2024-06-27 16:18:53,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:53,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 416 transitions, 13673 flow. Second operand has 81 states, 81 states have (on average 7.0246913580246915) internal successors, (569), 81 states have internal predecessors, (569), 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) [2024-06-27 16:18:53,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:53,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:53,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:19:00,416 INFO L124 PetriNetUnfolderBase]: 5692/11178 cut-off events. [2024-06-27 16:19:00,417 INFO L125 PetriNetUnfolderBase]: For 6361324/6361330 co-relation queries the response was YES. [2024-06-27 16:19:00,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186408 conditions, 11178 events. 5692/11178 cut-off events. For 6361324/6361330 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 65312 event pairs, 65 based on Foata normal form. 42/11217 useless extension candidates. Maximal degree in co-relation 186210. Up to 2661 conditions per place. [2024-06-27 16:19:00,718 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 308 selfloop transitions, 454 changer transitions 181/946 dead transitions. [2024-06-27 16:19:00,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 946 transitions, 38256 flow [2024-06-27 16:19:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-06-27 16:19:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-06-27 16:19:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 1015 transitions. [2024-06-27 16:19:00,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 16:19:00,720 INFO L175 Difference]: Start difference. First operand has 481 places, 416 transitions, 13673 flow. Second operand 84 states and 1015 transitions. [2024-06-27 16:19:00,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 946 transitions, 38256 flow [2024-06-27 16:19:16,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 946 transitions, 27814 flow, removed 5029 selfloop flow, removed 57 redundant places. [2024-06-27 16:19:16,309 INFO L231 Difference]: Finished difference. Result has 496 places, 488 transitions, 11832 flow [2024-06-27 16:19:16,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8659, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=11832, PETRI_PLACES=496, PETRI_TRANSITIONS=488} [2024-06-27 16:19:16,310 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 470 predicate places. [2024-06-27 16:19:16,310 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 488 transitions, 11832 flow [2024-06-27 16:19:16,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 7.0246913580246915) internal successors, (569), 81 states have internal predecessors, (569), 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) [2024-06-27 16:19:16,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:19:16,310 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:19:16,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-06-27 16:19:16,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-06-27 16:19:16,511 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:19:16,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:19:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1707013606, now seen corresponding path program 9 times [2024-06-27 16:19:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:19:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612808025] [2024-06-27 16:19:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:19:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:19:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:19:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:17,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:19:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612808025] [2024-06-27 16:19:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612808025] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:19:17,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849533544] [2024-06-27 16:19:17,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:19:17,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:19:17,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:19:17,282 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:19:17,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-06-27 16:19:17,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-06-27 16:19:17,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:19:17,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjunts are in the unsatisfiable core [2024-06-27 16:19:17,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:19:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:17,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:19:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:18,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849533544] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:19:18,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:19:18,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2024-06-27 16:19:18,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763503009] [2024-06-27 16:19:18,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:19:18,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-06-27 16:19:18,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:19:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-06-27 16:19:18,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2024-06-27 16:19:18,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:19:18,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 488 transitions, 11832 flow. Second operand has 46 states, 46 states have (on average 6.978260869565218) internal successors, (321), 46 states have internal predecessors, (321), 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) [2024-06-27 16:19:18,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:19:18,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:19:18,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:19:24,520 INFO L124 PetriNetUnfolderBase]: 5728/11275 cut-off events. [2024-06-27 16:19:24,520 INFO L125 PetriNetUnfolderBase]: For 5125694/5125700 co-relation queries the response was YES. [2024-06-27 16:19:24,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161740 conditions, 11275 events. 5728/11275 cut-off events. For 5125694/5125700 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 65771 event pairs, 38 based on Foata normal form. 33/11307 useless extension candidates. Maximal degree in co-relation 161553. Up to 2691 conditions per place. [2024-06-27 16:19:24,812 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 320 selfloop transitions, 463 changer transitions 183/969 dead transitions. [2024-06-27 16:19:24,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 969 transitions, 30201 flow [2024-06-27 16:19:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-06-27 16:19:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-06-27 16:19:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1059 transitions. [2024-06-27 16:19:24,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014204545454546 [2024-06-27 16:19:24,829 INFO L175 Difference]: Start difference. First operand has 496 places, 488 transitions, 11832 flow. Second operand 88 states and 1059 transitions. [2024-06-27 16:19:24,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 969 transitions, 30201 flow [2024-06-27 16:19:35,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 969 transitions, 28217 flow, removed 839 selfloop flow, removed 35 redundant places. [2024-06-27 16:19:35,986 INFO L231 Difference]: Finished difference. Result has 550 places, 495 transitions, 11974 flow [2024-06-27 16:19:35,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10446, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=456, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=11974, PETRI_PLACES=550, PETRI_TRANSITIONS=495} [2024-06-27 16:19:35,987 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 524 predicate places. [2024-06-27 16:19:35,987 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 495 transitions, 11974 flow [2024-06-27 16:19:35,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.978260869565218) internal successors, (321), 46 states have internal predecessors, (321), 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) [2024-06-27 16:19:35,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:19:35,988 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:19:36,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-06-27 16:19:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-06-27 16:19:36,199 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:19:36,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:19:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 772156480, now seen corresponding path program 10 times [2024-06-27 16:19:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:19:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889551854] [2024-06-27 16:19:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:19:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:19:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:19:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:36,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:19:36,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889551854] [2024-06-27 16:19:36,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889551854] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:19:36,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796530987] [2024-06-27 16:19:36,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:19:36,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:19:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:19:36,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:19:36,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-06-27 16:19:37,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:19:37,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:19:37,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjunts are in the unsatisfiable core [2024-06-27 16:19:37,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:19:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:37,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:19:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:37,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796530987] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:19:37,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:19:37,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 44 [2024-06-27 16:19:37,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691697458] [2024-06-27 16:19:37,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:19:37,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-06-27 16:19:37,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:19:37,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-06-27 16:19:37,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2024-06-27 16:19:37,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:19:37,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 495 transitions, 11974 flow. Second operand has 45 states, 45 states have (on average 6.955555555555556) internal successors, (313), 45 states have internal predecessors, (313), 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) [2024-06-27 16:19:37,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:19:37,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:19:37,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:19:43,690 INFO L124 PetriNetUnfolderBase]: 5899/11596 cut-off events. [2024-06-27 16:19:43,690 INFO L125 PetriNetUnfolderBase]: For 5335645/5335651 co-relation queries the response was YES. [2024-06-27 16:19:43,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168451 conditions, 11596 events. 5899/11596 cut-off events. For 5335645/5335651 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 67576 event pairs, 65 based on Foata normal form. 33/11626 useless extension candidates. Maximal degree in co-relation 168262. Up to 2769 conditions per place. [2024-06-27 16:19:43,871 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 329 selfloop transitions, 471 changer transitions 175/978 dead transitions. [2024-06-27 16:19:43,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 978 transitions, 30937 flow [2024-06-27 16:19:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-06-27 16:19:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-06-27 16:19:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 1052 transitions. [2024-06-27 16:19:43,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038314176245211 [2024-06-27 16:19:43,873 INFO L175 Difference]: Start difference. First operand has 550 places, 495 transitions, 11974 flow. Second operand 87 states and 1052 transitions. [2024-06-27 16:19:43,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 978 transitions, 30937 flow [2024-06-27 16:19:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 978 transitions, 29337 flow, removed 346 selfloop flow, removed 84 redundant places. [2024-06-27 16:19:54,207 INFO L231 Difference]: Finished difference. Result has 556 places, 503 transitions, 12461 flow [2024-06-27 16:19:54,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10576, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=12461, PETRI_PLACES=556, PETRI_TRANSITIONS=503} [2024-06-27 16:19:54,208 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 530 predicate places. [2024-06-27 16:19:54,208 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 503 transitions, 12461 flow [2024-06-27 16:19:54,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.955555555555556) internal successors, (313), 45 states have internal predecessors, (313), 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) [2024-06-27 16:19:54,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:19:54,209 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:19:54,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-06-27 16:19:54,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-06-27 16:19:54,418 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:19:54,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:19:54,419 INFO L85 PathProgramCache]: Analyzing trace with hash -651025696, now seen corresponding path program 11 times [2024-06-27 16:19:54,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:19:54,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777360892] [2024-06-27 16:19:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:19:54,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:19:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:19:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:55,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:19:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777360892] [2024-06-27 16:19:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777360892] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:19:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879381998] [2024-06-27 16:19:55,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:19:55,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:19:55,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:19:55,132 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:19:55,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-06-27 16:19:55,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-06-27 16:19:55,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:19:55,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjunts are in the unsatisfiable core [2024-06-27 16:19:55,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:19:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:55,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:19:55,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:19:55,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879381998] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:19:55,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:19:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2024-06-27 16:19:55,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714842238] [2024-06-27 16:19:55,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:19:55,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-06-27 16:19:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:19:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-06-27 16:19:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=1599, Unknown=0, NotChecked=0, Total=2070 [2024-06-27 16:19:55,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:19:55,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 503 transitions, 12461 flow. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 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) [2024-06-27 16:19:55,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:19:55,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:19:55,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:20:02,461 INFO L124 PetriNetUnfolderBase]: 5836/11494 cut-off events. [2024-06-27 16:20:02,461 INFO L125 PetriNetUnfolderBase]: For 5509590/5509596 co-relation queries the response was YES. [2024-06-27 16:20:02,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168486 conditions, 11494 events. 5836/11494 cut-off events. For 5509590/5509596 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 67097 event pairs, 38 based on Foata normal form. 51/11544 useless extension candidates. Maximal degree in co-relation 168293. Up to 2739 conditions per place. [2024-06-27 16:20:02,632 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 319 selfloop transitions, 474 changer transitions 187/983 dead transitions. [2024-06-27 16:20:02,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 983 transitions, 31445 flow [2024-06-27 16:20:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-06-27 16:20:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-06-27 16:20:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1061 transitions. [2024-06-27 16:20:02,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023674242424242 [2024-06-27 16:20:02,635 INFO L175 Difference]: Start difference. First operand has 556 places, 503 transitions, 12461 flow. Second operand 88 states and 1061 transitions. [2024-06-27 16:20:02,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 983 transitions, 31445 flow [2024-06-27 16:20:13,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 983 transitions, 29251 flow, removed 608 selfloop flow, removed 86 redundant places. [2024-06-27 16:20:13,774 INFO L231 Difference]: Finished difference. Result has 559 places, 504 transitions, 12035 flow [2024-06-27 16:20:13,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10873, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=12035, PETRI_PLACES=559, PETRI_TRANSITIONS=504} [2024-06-27 16:20:13,775 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 533 predicate places. [2024-06-27 16:20:13,775 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 504 transitions, 12035 flow [2024-06-27 16:20:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 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) [2024-06-27 16:20:13,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:20:13,775 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:20:13,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-06-27 16:20:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:20:13,976 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:20:13,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:20:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash -878951518, now seen corresponding path program 12 times [2024-06-27 16:20:13,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:20:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885582141] [2024-06-27 16:20:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:20:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:20:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:20:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:20:14,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:20:14,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885582141] [2024-06-27 16:20:14,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885582141] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:20:14,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342419720] [2024-06-27 16:20:14,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:20:14,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:20:14,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:20:14,725 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:20:14,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-06-27 16:20:14,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-06-27 16:20:14,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:20:14,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjunts are in the unsatisfiable core [2024-06-27 16:20:14,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:20:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:20:14,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:20:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:20:15,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342419720] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:20:15,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:20:15,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 86 [2024-06-27 16:20:15,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026062958] [2024-06-27 16:20:15,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:20:15,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-06-27 16:20:15,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:20:15,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-06-27 16:20:15,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1740, Invalid=5742, Unknown=0, NotChecked=0, Total=7482 [2024-06-27 16:20:15,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:20:15,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 504 transitions, 12035 flow. Second operand has 87 states, 87 states have (on average 7.022988505747127) internal successors, (611), 87 states have internal predecessors, (611), 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) [2024-06-27 16:20:15,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:20:15,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:20:15,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:20:22,972 INFO L124 PetriNetUnfolderBase]: 5971/11680 cut-off events. [2024-06-27 16:20:22,972 INFO L125 PetriNetUnfolderBase]: For 5636412/5636418 co-relation queries the response was YES. [2024-06-27 16:20:23,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172896 conditions, 11680 events. 5971/11680 cut-off events. For 5636412/5636418 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 67808 event pairs, 102 based on Foata normal form. 42/11721 useless extension candidates. Maximal degree in co-relation 172703. Up to 2775 conditions per place. [2024-06-27 16:20:23,174 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 344 selfloop transitions, 475 changer transitions 197/1019 dead transitions. [2024-06-27 16:20:23,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 1019 transitions, 32776 flow [2024-06-27 16:20:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-06-27 16:20:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2024-06-27 16:20:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 1111 transitions. [2024-06-27 16:20:23,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031702898550725 [2024-06-27 16:20:23,176 INFO L175 Difference]: Start difference. First operand has 559 places, 504 transitions, 12035 flow. Second operand 92 states and 1111 transitions. [2024-06-27 16:20:23,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 1019 transitions, 32776 flow [2024-06-27 16:20:32,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 1019 transitions, 31205 flow, removed 339 selfloop flow, removed 84 redundant places. [2024-06-27 16:20:32,761 INFO L231 Difference]: Finished difference. Result has 573 places, 513 transitions, 12893 flow [2024-06-27 16:20:32,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10774, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=12893, PETRI_PLACES=573, PETRI_TRANSITIONS=513} [2024-06-27 16:20:32,762 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 547 predicate places. [2024-06-27 16:20:32,762 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 513 transitions, 12893 flow [2024-06-27 16:20:32,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 7.022988505747127) internal successors, (611), 87 states have internal predecessors, (611), 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) [2024-06-27 16:20:32,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:20:32,762 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:20:32,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-06-27 16:20:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:20:32,963 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:20:32,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:20:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1547248995, now seen corresponding path program 13 times [2024-06-27 16:20:32,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:20:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527912762] [2024-06-27 16:20:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:20:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:20:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:20:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 1080 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:20:33,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:20:33,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527912762] [2024-06-27 16:20:33,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527912762] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:20:33,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246050985] [2024-06-27 16:20:33,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 16:20:33,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:20:33,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:20:33,249 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:20:33,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-06-27 16:20:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:20:33,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:20:33,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:20:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:20:33,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:20:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246050985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:20:33,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:20:33,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-06-27 16:20:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064996715] [2024-06-27 16:20:33,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:20:33,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 16:20:33,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:20:33,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 16:20:33,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-06-27 16:20:33,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-06-27 16:20:33,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 513 transitions, 12893 flow. Second operand has 23 states, 23 states have (on average 12.91304347826087) internal successors, (297), 23 states have internal predecessors, (297), 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) [2024-06-27 16:20:33,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:20:33,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-06-27 16:20:33,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand