./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/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 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:18:16,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:18:16,179 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:18:16,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:18:16,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:18:16,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:18:16,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:18:16,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:18:16,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:18:16,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:18:16,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:18:16,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:18:16,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:18:16,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:18:16,231 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:18:16,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:18:16,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:18:16,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:18:16,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:18:16,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:18:16,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:18:16,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:18:16,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:18:16,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:18:16,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:18:16,241 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:18:16,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:18:16,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:18:16,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:18:16,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:18:16,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:18:16,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:18:16,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:18:16,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:18:16,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:18:16,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:18:16,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:18:16,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:18:16,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:18:16,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:18:16,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:18:16,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:18:16,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-11-20 09:18:16,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:18:16,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:18:16,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:18:16,547 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:18:16,547 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:18:16,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-20 09:18:18,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:18:18,389 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:18:18,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-20 09:18:18,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c37963c/dea1c686df694ff38cda69b510fbb5b8/FLAG62f54a23c [2024-11-20 09:18:18,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c37963c/dea1c686df694ff38cda69b510fbb5b8 [2024-11-20 09:18:18,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:18:18,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:18:18,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:18:18,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:18:18,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:18:18,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:18,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6893c3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18, skipping insertion in model container [2024-11-20 09:18:18,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:18,482 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:18:18,856 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2024-11-20 09:18:18,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:18:18,872 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:18:18,942 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2024-11-20 09:18:18,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:18:18,986 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:18:18,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18 WrapperNode [2024-11-20 09:18:18,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:18:18,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:18:18,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:18:18,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:18:18,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,038 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-20 09:18:19,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:18:19,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:18:19,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:18:19,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:18:19,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,085 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]. [2024-11-20 09:18:19,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:18:19,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:18:19,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:18:19,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:18:19,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (1/1) ... [2024-11-20 09:18:19,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:18:19,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:19,155 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) [2024-11-20 09:18:19,163 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 [2024-11-20 09:18:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-20 09:18:19,210 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-20 09:18:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-20 09:18:19,211 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-20 09:18:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:18:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:18:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:18:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:18:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:18:19,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:18:19,215 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:18:19,365 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:18:19,368 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:18:19,522 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:18:19,522 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:18:19,631 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:18:19,631 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 09:18:19,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:18:19 BoogieIcfgContainer [2024-11-20 09:18:19,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:18:19,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:18:19,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:18:19,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:18:19,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:18:18" (1/3) ... [2024-11-20 09:18:19,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c33c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:18:19, skipping insertion in model container [2024-11-20 09:18:19,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:18:18" (2/3) ... [2024-11-20 09:18:19,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c33c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:18:19, skipping insertion in model container [2024-11-20 09:18:19,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:18:19" (3/3) ... [2024-11-20 09:18:19,642 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-11-20 09:18:19,662 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:18:19,663 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:18:19,664 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:18:19,710 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 09:18:19,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-11-20 09:18:19,774 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-20 09:18:19,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:18:19,778 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. [2024-11-20 09:18:19,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-11-20 09:18:19,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-11-20 09:18:19,799 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:18:19,810 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@715b294a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:18:19,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-20 09:18:19,827 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:18:19,828 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-20 09:18:19,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:18:19,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:19,833 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:19,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:19,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-11-20 09:18:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555428603] [2024-11-20 09:18:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:19,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555428603] [2024-11-20 09:18:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555428603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:18:20,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:18:20,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:18:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970329614] [2024-11-20 09:18:20,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:18:20,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:18:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:18:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:18:20,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:20,458 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) [2024-11-20 09:18:20,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:20,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:20,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:20,750 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-11-20 09:18:20,753 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 09:18:20,756 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. [2024-11-20 09:18:20,763 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-11-20 09:18:20,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-11-20 09:18:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:18:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:18:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-20 09:18:20,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-20 09:18:20,779 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-11-20 09:18:20,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-11-20 09:18:20,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:18:20,786 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-11-20 09:18:20,788 INFO L260 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} [2024-11-20 09:18:20,792 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-20 09:18:20,792 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-11-20 09:18:20,792 INFO L472 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) [2024-11-20 09:18:20,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:20,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:20,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:18:20,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:20,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-11-20 09:18:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:20,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399054840] [2024-11-20 09:18:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:20,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:20,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:20,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399054840] [2024-11-20 09:18:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399054840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:18:20,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:18:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:18:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078000398] [2024-11-20 09:18:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:18:20,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:18:20,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:18:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:18:21,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:21,008 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) [2024-11-20 09:18:21,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:21,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:21,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:21,316 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-11-20 09:18:21,317 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-11-20 09:18:21,320 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. [2024-11-20 09:18:21,327 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-11-20 09:18:21,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-11-20 09:18:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:18:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:18:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-20 09:18:21,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-20 09:18:21,333 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-11-20 09:18:21,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-11-20 09:18:21,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-20 09:18:21,341 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-11-20 09:18:21,341 INFO L260 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} [2024-11-20 09:18:21,342 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-20 09:18:21,342 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-11-20 09:18:21,342 INFO L472 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) [2024-11-20 09:18:21,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:21,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:21,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:18:21,343 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:21,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-11-20 09:18:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:21,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701037583] [2024-11-20 09:18:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:21,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:21,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:21,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701037583] [2024-11-20 09:18:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701037583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:18:21,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:18:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:18:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194467545] [2024-11-20 09:18:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:18:21,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:18:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:18:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:18:21,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:21,613 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) [2024-11-20 09:18:21,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:21,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:21,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:21,822 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-11-20 09:18:21,823 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-11-20 09:18:21,825 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. [2024-11-20 09:18:21,827 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-11-20 09:18:21,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-11-20 09:18:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:18:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:18:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-20 09:18:21,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-11-20 09:18:21,834 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-11-20 09:18:21,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-11-20 09:18:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-20 09:18:21,842 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-11-20 09:18:21,843 INFO L260 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} [2024-11-20 09:18:21,844 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-20 09:18:21,845 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-11-20 09:18:21,845 INFO L472 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) [2024-11-20 09:18:21,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:21,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:21,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:18:21,846 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:21,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-11-20 09:18:21,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:21,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125783072] [2024-11-20 09:18:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:21,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:21,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:21,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125783072] [2024-11-20 09:18:21,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125783072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:18:21,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:18:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:18:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370774355] [2024-11-20 09:18:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:18:21,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:18:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:18:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:18:21,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:21,977 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) [2024-11-20 09:18:21,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:21,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:21,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:22,189 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-11-20 09:18:22,189 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-11-20 09:18:22,191 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. [2024-11-20 09:18:22,194 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-11-20 09:18:22,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-11-20 09:18:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:18:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:18:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-11-20 09:18:22,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-20 09:18:22,196 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-11-20 09:18:22,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-11-20 09:18:22,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-20 09:18:22,204 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-11-20 09:18:22,204 INFO L260 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} [2024-11-20 09:18:22,205 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-20 09:18:22,205 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-11-20 09:18:22,206 INFO L472 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) [2024-11-20 09:18:22,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:22,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:22,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:18:22,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:22,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-11-20 09:18:22,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:22,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728558186] [2024-11-20 09:18:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:22,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728558186] [2024-11-20 09:18:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728558186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:18:22,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:18:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:18:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485159303] [2024-11-20 09:18:22,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:18:22,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:18:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:18:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:18:22,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:22,367 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) [2024-11-20 09:18:22,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:22,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:22,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:22,660 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-11-20 09:18:22,660 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-11-20 09:18:22,663 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. [2024-11-20 09:18:22,668 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-11-20 09:18:22,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-11-20 09:18:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 09:18:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 09:18:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-20 09:18:22,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-20 09:18:22,670 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-11-20 09:18:22,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-11-20 09:18:22,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-20 09:18:22,680 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-11-20 09:18:22,680 INFO L260 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} [2024-11-20 09:18:22,681 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-20 09:18:22,681 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-11-20 09:18:22,681 INFO L472 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) [2024-11-20 09:18:22,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:22,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:22,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:18:22,682 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:22,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-11-20 09:18:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806089388] [2024-11-20 09:18:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806089388] [2024-11-20 09:18:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806089388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:18:22,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:18:22,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:18:22,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694677484] [2024-11-20 09:18:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:18:22,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:18:22,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:18:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:18:22,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:22,839 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) [2024-11-20 09:18:22,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:22,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:22,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:23,115 INFO L124 PetriNetUnfolderBase]: 499/926 cut-off events. [2024-11-20 09:18:23,116 INFO L125 PetriNetUnfolderBase]: For 5506/5518 co-relation queries the response was YES. [2024-11-20 09:18:23,119 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. [2024-11-20 09:18:23,124 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 27 changer transitions 33/108 dead transitions. [2024-11-20 09:18:23,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 108 transitions, 999 flow [2024-11-20 09:18:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 09:18:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 09:18:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-11-20 09:18:23,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-20 09:18:23,126 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 11 states and 138 transitions. [2024-11-20 09:18:23,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 108 transitions, 999 flow [2024-11-20 09:18:23,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 931 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-20 09:18:23,141 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 514 flow [2024-11-20 09:18:23,142 INFO L260 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} [2024-11-20 09:18:23,142 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-20 09:18:23,142 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 514 flow [2024-11-20 09:18:23,143 INFO L472 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) [2024-11-20 09:18:23,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:23,143 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:23,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:18:23,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:23,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:23,144 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-11-20 09:18:23,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:23,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517849169] [2024-11-20 09:18:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:23,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:23,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517849169] [2024-11-20 09:18:23,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517849169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:23,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333203668] [2024-11-20 09:18:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:23,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:23,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:23,277 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) [2024-11-20 09:18:23,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:18:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:23,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 09:18:23,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:23,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333203668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:23,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 09:18:23,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968642967] [2024-11-20 09:18:23,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:23,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:18:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:18:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:18:23,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:23,633 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) [2024-11-20 09:18:23,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:23,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:23,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:24,130 INFO L124 PetriNetUnfolderBase]: 607/1136 cut-off events. [2024-11-20 09:18:24,130 INFO L125 PetriNetUnfolderBase]: For 10981/10993 co-relation queries the response was YES. [2024-11-20 09:18:24,136 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. [2024-11-20 09:18:24,142 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 19 changer transitions 67/156 dead transitions. [2024-11-20 09:18:24,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 156 transitions, 1590 flow [2024-11-20 09:18:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 09:18:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-20 09:18:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-11-20 09:18:24,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-11-20 09:18:24,144 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 514 flow. Second operand 19 states and 231 transitions. [2024-11-20 09:18:24,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 156 transitions, 1590 flow [2024-11-20 09:18:24,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 156 transitions, 1489 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-11-20 09:18:24,164 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 646 flow [2024-11-20 09:18:24,165 INFO L260 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} [2024-11-20 09:18:24,166 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-11-20 09:18:24,166 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 646 flow [2024-11-20 09:18:24,166 INFO L472 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) [2024-11-20 09:18:24,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:24,166 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:24,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:18:24,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:24,368 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:24,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash -827216793, now seen corresponding path program 2 times [2024-11-20 09:18:24,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:24,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539877565] [2024-11-20 09:18:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:24,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539877565] [2024-11-20 09:18:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539877565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197628931] [2024-11-20 09:18:24,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:18:24,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:24,493 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) [2024-11-20 09:18:24,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:18:24,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:18:24,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:18:24,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 09:18:24,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:24,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197628931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:24,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 09:18:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961409491] [2024-11-20 09:18:24,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:24,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:18:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:18:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:18:24,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:24,769 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) [2024-11-20 09:18:24,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:24,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:24,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:25,515 INFO L124 PetriNetUnfolderBase]: 895/1655 cut-off events. [2024-11-20 09:18:25,516 INFO L125 PetriNetUnfolderBase]: For 37310/37322 co-relation queries the response was YES. [2024-11-20 09:18:25,524 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. [2024-11-20 09:18:25,534 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 49 changer transitions 80/220 dead transitions. [2024-11-20 09:18:25,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 220 transitions, 2852 flow [2024-11-20 09:18:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 09:18:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-20 09:18:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-11-20 09:18:25,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-11-20 09:18:25,537 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 646 flow. Second operand 27 states and 334 transitions. [2024-11-20 09:18:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 220 transitions, 2852 flow [2024-11-20 09:18:25,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 220 transitions, 2305 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-11-20 09:18:25,586 INFO L231 Difference]: Finished difference. Result has 118 places, 72 transitions, 1051 flow [2024-11-20 09:18:25,587 INFO L260 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} [2024-11-20 09:18:25,588 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-20 09:18:25,588 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 72 transitions, 1051 flow [2024-11-20 09:18:25,589 INFO L472 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) [2024-11-20 09:18:25,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:25,590 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:25,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:18:25,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-20 09:18:25,791 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:25,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1859448120, now seen corresponding path program 1 times [2024-11-20 09:18:25,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:25,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457820352] [2024-11-20 09:18:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:25,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457820352] [2024-11-20 09:18:25,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457820352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636927122] [2024-11-20 09:18:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:25,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:25,968 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) [2024-11-20 09:18:25,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:18:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:26,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:18:26,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:26,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:26,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636927122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:26,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:26,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-20 09:18:26,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682347800] [2024-11-20 09:18:26,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:26,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 09:18:26,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:26,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 09:18:26,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-20 09:18:26,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:26,247 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) [2024-11-20 09:18:26,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:26,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:26,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:27,051 INFO L124 PetriNetUnfolderBase]: 1129/2124 cut-off events. [2024-11-20 09:18:27,051 INFO L125 PetriNetUnfolderBase]: For 87490/87496 co-relation queries the response was YES. [2024-11-20 09:18:27,062 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. [2024-11-20 09:18:27,076 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 53 changer transitions 67/222 dead transitions. [2024-11-20 09:18:27,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 222 transitions, 3667 flow [2024-11-20 09:18:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-20 09:18:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-20 09:18:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-11-20 09:18:27,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-20 09:18:27,079 INFO L175 Difference]: Start difference. First operand has 118 places, 72 transitions, 1051 flow. Second operand 25 states and 309 transitions. [2024-11-20 09:18:27,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 222 transitions, 3667 flow [2024-11-20 09:18:27,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 222 transitions, 3084 flow, removed 275 selfloop flow, removed 13 redundant places. [2024-11-20 09:18:27,177 INFO L231 Difference]: Finished difference. Result has 136 places, 83 transitions, 1339 flow [2024-11-20 09:18:27,178 INFO L260 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} [2024-11-20 09:18:27,178 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2024-11-20 09:18:27,179 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 83 transitions, 1339 flow [2024-11-20 09:18:27,179 INFO L472 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) [2024-11-20 09:18:27,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:27,179 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:27,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 09:18:27,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:27,380 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:27,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2089657410, now seen corresponding path program 2 times [2024-11-20 09:18:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767613571] [2024-11-20 09:18:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:27,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:27,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:27,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767613571] [2024-11-20 09:18:27,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767613571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:27,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745062349] [2024-11-20 09:18:27,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:18:27,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:27,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:27,500 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) [2024-11-20 09:18:27,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:18:27,543 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:18:27,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:18:27,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:18:27,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:27,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:27,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745062349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:27,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:27,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-20 09:18:27,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180386947] [2024-11-20 09:18:27,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:27,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 09:18:27,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 09:18:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-20 09:18:27,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:27,726 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) [2024-11-20 09:18:27,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:27,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:27,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:28,801 INFO L124 PetriNetUnfolderBase]: 1246/2377 cut-off events. [2024-11-20 09:18:28,801 INFO L125 PetriNetUnfolderBase]: For 139322/139328 co-relation queries the response was YES. [2024-11-20 09:18:28,815 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. [2024-11-20 09:18:28,840 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 92 selfloop transitions, 80 changer transitions 102/277 dead transitions. [2024-11-20 09:18:28,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 277 transitions, 5245 flow [2024-11-20 09:18:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-20 09:18:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-20 09:18:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 369 transitions. [2024-11-20 09:18:28,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-11-20 09:18:28,844 INFO L175 Difference]: Start difference. First operand has 136 places, 83 transitions, 1339 flow. Second operand 30 states and 369 transitions. [2024-11-20 09:18:28,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 277 transitions, 5245 flow [2024-11-20 09:18:29,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 4471 flow, removed 349 selfloop flow, removed 18 redundant places. [2024-11-20 09:18:29,036 INFO L231 Difference]: Finished difference. Result has 159 places, 104 transitions, 1972 flow [2024-11-20 09:18:29,038 INFO L260 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} [2024-11-20 09:18:29,040 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2024-11-20 09:18:29,040 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 104 transitions, 1972 flow [2024-11-20 09:18:29,040 INFO L472 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) [2024-11-20 09:18:29,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:29,040 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:29,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 09:18:29,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:29,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:29,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:29,242 INFO L85 PathProgramCache]: Analyzing trace with hash -876448546, now seen corresponding path program 3 times [2024-11-20 09:18:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772258037] [2024-11-20 09:18:29,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:29,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:29,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772258037] [2024-11-20 09:18:29,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772258037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238786380] [2024-11-20 09:18:29,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:18:29,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:29,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:29,472 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) [2024-11-20 09:18:29,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:18:29,521 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-20 09:18:29,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:18:29,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 09:18:29,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:29,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:29,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238786380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:29,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:29,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-20 09:18:29,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307668049] [2024-11-20 09:18:29,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:29,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 09:18:29,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:29,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 09:18:29,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-20 09:18:29,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:29,818 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) [2024-11-20 09:18:29,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:29,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:29,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:31,408 INFO L124 PetriNetUnfolderBase]: 1714/3171 cut-off events. [2024-11-20 09:18:31,408 INFO L125 PetriNetUnfolderBase]: For 260933/260939 co-relation queries the response was YES. [2024-11-20 09:18:31,432 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. [2024-11-20 09:18:31,457 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 142 selfloop transitions, 114 changer transitions 135/394 dead transitions. [2024-11-20 09:18:31,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 394 transitions, 8422 flow [2024-11-20 09:18:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-20 09:18:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-20 09:18:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 565 transitions. [2024-11-20 09:18:31,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5117753623188406 [2024-11-20 09:18:31,461 INFO L175 Difference]: Start difference. First operand has 159 places, 104 transitions, 1972 flow. Second operand 46 states and 565 transitions. [2024-11-20 09:18:31,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 394 transitions, 8422 flow [2024-11-20 09:18:31,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 394 transitions, 7107 flow, removed 626 selfloop flow, removed 20 redundant places. [2024-11-20 09:18:31,707 INFO L231 Difference]: Finished difference. Result has 204 places, 138 transitions, 3067 flow [2024-11-20 09:18:31,708 INFO L260 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} [2024-11-20 09:18:31,709 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-11-20 09:18:31,709 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 138 transitions, 3067 flow [2024-11-20 09:18:31,709 INFO L472 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) [2024-11-20 09:18:31,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:31,710 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:31,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 09:18:31,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-20 09:18:31,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:31,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -336419707, now seen corresponding path program 4 times [2024-11-20 09:18:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379616739] [2024-11-20 09:18:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:32,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379616739] [2024-11-20 09:18:32,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379616739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656349066] [2024-11-20 09:18:32,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:18:32,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:32,289 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) [2024-11-20 09:18:32,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:18:32,346 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:18:32,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:18:32,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 09:18:32,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:32,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656349066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:32,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:32,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-11-20 09:18:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514022858] [2024-11-20 09:18:32,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:32,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-20 09:18:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-20 09:18:32,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 09:18:33,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:33,007 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) [2024-11-20 09:18:33,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:33,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:33,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:35,397 INFO L124 PetriNetUnfolderBase]: 2218/4260 cut-off events. [2024-11-20 09:18:35,398 INFO L125 PetriNetUnfolderBase]: For 591236/591242 co-relation queries the response was YES. [2024-11-20 09:18:35,434 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. [2024-11-20 09:18:35,465 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 190 selfloop transitions, 101 changer transitions 189/483 dead transitions. [2024-11-20 09:18:35,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 483 transitions, 13822 flow [2024-11-20 09:18:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-20 09:18:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-20 09:18:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 653 transitions. [2024-11-20 09:18:35,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4946969696969697 [2024-11-20 09:18:35,543 INFO L175 Difference]: Start difference. First operand has 204 places, 138 transitions, 3067 flow. Second operand 55 states and 653 transitions. [2024-11-20 09:18:35,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 483 transitions, 13822 flow [2024-11-20 09:18:36,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 483 transitions, 10112 flow, removed 1813 selfloop flow, removed 29 redundant places. [2024-11-20 09:18:36,134 INFO L231 Difference]: Finished difference. Result has 252 places, 180 transitions, 3965 flow [2024-11-20 09:18:36,134 INFO L260 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} [2024-11-20 09:18:36,135 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 226 predicate places. [2024-11-20 09:18:36,135 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 180 transitions, 3965 flow [2024-11-20 09:18:36,135 INFO L472 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) [2024-11-20 09:18:36,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:36,135 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:36,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 09:18:36,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:36,336 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:36,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:36,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2049425977, now seen corresponding path program 5 times [2024-11-20 09:18:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672679070] [2024-11-20 09:18:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672679070] [2024-11-20 09:18:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672679070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643153805] [2024-11-20 09:18:36,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:18:36,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:36,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:36,680 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) [2024-11-20 09:18:36,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:18:36,735 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-20 09:18:36,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:18:36,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 09:18:36,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:36,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:37,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643153805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:37,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:37,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-20 09:18:37,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81932300] [2024-11-20 09:18:37,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:37,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-20 09:18:37,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-20 09:18:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 09:18:37,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:37,436 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) [2024-11-20 09:18:37,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:37,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:37,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:39,919 INFO L124 PetriNetUnfolderBase]: 2767/5513 cut-off events. [2024-11-20 09:18:39,919 INFO L125 PetriNetUnfolderBase]: For 986686/986692 co-relation queries the response was YES. [2024-11-20 09:18:39,971 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. [2024-11-20 09:18:40,008 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 180 selfloop transitions, 193 changer transitions 201/577 dead transitions. [2024-11-20 09:18:40,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 577 transitions, 16555 flow [2024-11-20 09:18:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-20 09:18:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-20 09:18:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 730 transitions. [2024-11-20 09:18:40,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49863387978142076 [2024-11-20 09:18:40,012 INFO L175 Difference]: Start difference. First operand has 252 places, 180 transitions, 3965 flow. Second operand 61 states and 730 transitions. [2024-11-20 09:18:40,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 577 transitions, 16555 flow [2024-11-20 09:18:41,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 577 transitions, 14025 flow, removed 1228 selfloop flow, removed 31 redundant places. [2024-11-20 09:18:41,852 INFO L231 Difference]: Finished difference. Result has 300 places, 241 transitions, 5990 flow [2024-11-20 09:18:41,853 INFO L260 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} [2024-11-20 09:18:41,853 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 274 predicate places. [2024-11-20 09:18:41,853 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 241 transitions, 5990 flow [2024-11-20 09:18:41,854 INFO L472 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) [2024-11-20 09:18:41,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:41,854 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:41,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 09:18:42,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:42,055 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:42,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1408442027, now seen corresponding path program 6 times [2024-11-20 09:18:42,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066215085] [2024-11-20 09:18:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:42,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:42,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066215085] [2024-11-20 09:18:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066215085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:42,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922999617] [2024-11-20 09:18:42,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:18:42,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:42,354 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) [2024-11-20 09:18:42,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 09:18:42,412 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-20 09:18:42,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:18:42,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-20 09:18:42,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:42,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922999617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:42,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:42,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-11-20 09:18:42,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754811639] [2024-11-20 09:18:42,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:42,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-20 09:18:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-20 09:18:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 09:18:42,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:42,942 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) [2024-11-20 09:18:42,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:42,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:42,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:47,037 INFO L124 PetriNetUnfolderBase]: 3694/7306 cut-off events. [2024-11-20 09:18:47,037 INFO L125 PetriNetUnfolderBase]: For 1943250/1943256 co-relation queries the response was YES. [2024-11-20 09:18:47,092 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. [2024-11-20 09:18:47,151 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 226 selfloop transitions, 274 changer transitions 205/708 dead transitions. [2024-11-20 09:18:47,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 708 transitions, 23646 flow [2024-11-20 09:18:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-20 09:18:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-11-20 09:18:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 868 transitions. [2024-11-20 09:18:47,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5093896713615024 [2024-11-20 09:18:47,155 INFO L175 Difference]: Start difference. First operand has 300 places, 241 transitions, 5990 flow. Second operand 71 states and 868 transitions. [2024-11-20 09:18:47,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 708 transitions, 23646 flow [2024-11-20 09:18:50,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 708 transitions, 19791 flow, removed 1881 selfloop flow, removed 31 redundant places. [2024-11-20 09:18:50,140 INFO L231 Difference]: Finished difference. Result has 364 places, 302 transitions, 8507 flow [2024-11-20 09:18:50,141 INFO L260 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} [2024-11-20 09:18:50,141 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 338 predicate places. [2024-11-20 09:18:50,141 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 302 transitions, 8507 flow [2024-11-20 09:18:50,142 INFO L472 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) [2024-11-20 09:18:50,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:18:50,142 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:18:50,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 09:18:50,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 09:18:50,342 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:18:50,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:18:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2127010885, now seen corresponding path program 7 times [2024-11-20 09:18:50,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:18:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426321228] [2024-11-20 09:18:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:18:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:18:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:50,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:18:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426321228] [2024-11-20 09:18:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426321228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:18:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541586660] [2024-11-20 09:18:50,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 09:18:50,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:18:50,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:18:50,778 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) [2024-11-20 09:18:50,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 09:18:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:18:50,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-20 09:18:50,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:18:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:50,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:18:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:18:51,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541586660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:18:51,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:18:51,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-20 09:18:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766906818] [2024-11-20 09:18:51,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:18:51,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-20 09:18:51,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:18:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-20 09:18:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 09:18:51,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:18:51,511 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) [2024-11-20 09:18:51,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:18:51,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:18:51,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:18:58,021 INFO L124 PetriNetUnfolderBase]: 5170/10176 cut-off events. [2024-11-20 09:18:58,021 INFO L125 PetriNetUnfolderBase]: For 4206677/4206683 co-relation queries the response was YES. [2024-11-20 09:18:58,104 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. [2024-11-20 09:18:58,151 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 314 selfloop transitions, 388 changer transitions 335/1040 dead transitions. [2024-11-20 09:18:58,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1040 transitions, 42789 flow [2024-11-20 09:18:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-20 09:18:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-11-20 09:18:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1297 transitions. [2024-11-20 09:18:58,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098270440251572 [2024-11-20 09:18:58,155 INFO L175 Difference]: Start difference. First operand has 364 places, 302 transitions, 8507 flow. Second operand 106 states and 1297 transitions. [2024-11-20 09:18:58,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1040 transitions, 42789 flow [2024-11-20 09:19:03,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1040 transitions, 34169 flow, removed 4215 selfloop flow, removed 36 redundant places. [2024-11-20 09:19:03,639 INFO L231 Difference]: Finished difference. Result has 481 places, 416 transitions, 13673 flow [2024-11-20 09:19:03,640 INFO L260 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} [2024-11-20 09:19:03,640 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 455 predicate places. [2024-11-20 09:19:03,640 INFO L471 AbstractCegarLoop]: Abstraction has has 481 places, 416 transitions, 13673 flow [2024-11-20 09:19:03,641 INFO L472 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) [2024-11-20 09:19:03,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:19:03,641 INFO L204 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:19:03,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 09:19:03,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 09:19:03,841 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:19:03,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:19:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash 174493553, now seen corresponding path program 8 times [2024-11-20 09:19:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:19:03,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383819828] [2024-11-20 09:19:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:19:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:19:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:19:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:19:04,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:19:04,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383819828] [2024-11-20 09:19:04,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383819828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:19:04,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062442532] [2024-11-20 09:19:04,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:19:04,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:19:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:19:04,800 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) [2024-11-20 09:19:04,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 09:19:04,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:19:04,863 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:19:04,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-20 09:19:04,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:19:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:19:05,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:19:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:19:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062442532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:19:05,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:19:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 80 [2024-11-20 09:19:05,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389453198] [2024-11-20 09:19:05,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:19:05,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-20 09:19:05,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:19:05,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-20 09:19:05,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=4979, Unknown=0, NotChecked=0, Total=6480 [2024-11-20 09:19:05,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:19:05,973 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) [2024-11-20 09:19:05,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:19:05,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:19:05,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:19:13,766 INFO L124 PetriNetUnfolderBase]: 5692/11178 cut-off events. [2024-11-20 09:19:13,766 INFO L125 PetriNetUnfolderBase]: For 6361324/6361330 co-relation queries the response was YES. [2024-11-20 09:19:13,902 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. [2024-11-20 09:19:13,966 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 308 selfloop transitions, 454 changer transitions 181/946 dead transitions. [2024-11-20 09:19:13,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 946 transitions, 38256 flow [2024-11-20 09:19:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-20 09:19:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-20 09:19:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 1015 transitions. [2024-11-20 09:19:13,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-11-20 09:19:13,969 INFO L175 Difference]: Start difference. First operand has 481 places, 416 transitions, 13673 flow. Second operand 84 states and 1015 transitions. [2024-11-20 09:19:13,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 946 transitions, 38256 flow [2024-11-20 09:19:35,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 946 transitions, 27814 flow, removed 5029 selfloop flow, removed 57 redundant places. [2024-11-20 09:19:35,461 INFO L231 Difference]: Finished difference. Result has 496 places, 488 transitions, 11832 flow [2024-11-20 09:19:35,461 INFO L260 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} [2024-11-20 09:19:35,462 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 470 predicate places. [2024-11-20 09:19:35,462 INFO L471 AbstractCegarLoop]: Abstraction has has 496 places, 488 transitions, 11832 flow [2024-11-20 09:19:35,462 INFO L472 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) [2024-11-20 09:19:35,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:19:35,463 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:19:35,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 09:19:35,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 09:19:35,663 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:19:35,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:19:35,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1707013606, now seen corresponding path program 9 times [2024-11-20 09:19:35,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:19:35,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477018018] [2024-11-20 09:19:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:19:35,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:19:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:19:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:19:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:19:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477018018] [2024-11-20 09:19:36,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477018018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:19:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432822830] [2024-11-20 09:19:36,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:19:36,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:19:36,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:19:36,815 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) [2024-11-20 09:19:36,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 09:19:36,904 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-11-20 09:19:36,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:19:36,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-20 09:19:36,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:19:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:19:37,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:19:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:19:37,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432822830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:19:37,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:19:37,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2024-11-20 09:19:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735439076] [2024-11-20 09:19:37,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:19:37,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-20 09:19:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:19:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-20 09:19:37,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 09:19:37,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-20 09:19:37,831 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) [2024-11-20 09:19:37,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:19:37,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-20 09:19:37,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand