./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:21:12,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:21:12,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:21:12,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:21:12,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:21:12,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:21:12,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:21:12,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:21:12,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:21:12,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:21:12,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:21:12,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:21:12,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:21:12,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:21:12,420 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:21:12,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:21:12,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:21:12,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:21:12,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:21:12,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:21:12,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:21:12,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:21:12,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:21:12,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:21:12,429 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:21:12,429 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:21:12,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:21:12,429 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:21:12,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:21:12,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:21:12,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:21:12,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:21:12,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:21:12,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:21:12,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:21:12,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:21:12,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:21:12,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:21:12,433 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:21:12,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:21:12,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:21:12,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:21:12,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2024-11-12 08:21:12,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:21:12,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:21:12,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:21:12,733 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:21:12,733 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:21:12,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-12 08:21:14,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:21:14,421 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:21:14,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-12 08:21:14,429 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562bfe961/8589fab783a5474b8cebdd79e0320ddc/FLAGd93fe8c42 [2024-11-12 08:21:14,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562bfe961/8589fab783a5474b8cebdd79e0320ddc [2024-11-12 08:21:14,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:21:14,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:21:14,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:21:14,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:21:14,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:21:14,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:21:14" (1/1) ... [2024-11-12 08:21:14,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417e07f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:14, skipping insertion in model container [2024-11-12 08:21:14,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:21:14" (1/1) ... [2024-11-12 08:21:14,850 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:21:15,063 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/weaver/mult-dist.wvr.c[2155,2168] [2024-11-12 08:21:15,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:21:15,078 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:21:15,103 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/weaver/mult-dist.wvr.c[2155,2168] [2024-11-12 08:21:15,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:21:15,130 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:21:15,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15 WrapperNode [2024-11-12 08:21:15,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:21:15,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:21:15,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:21:15,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:21:15,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,170 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-12 08:21:15,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:21:15,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:21:15,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:21:15,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:21:15,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,201 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]. [2024-11-12 08:21:15,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:21:15,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:21:15,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:21:15,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:21:15,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (1/1) ... [2024-11-12 08:21:15,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:21:15,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:15,257 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) [2024-11-12 08:21:15,264 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 [2024-11-12 08:21:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:21:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:21:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:21:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:21:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:21:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:21:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:21:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:21:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:21:15,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:21:15,313 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:21:15,424 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:21:15,427 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:21:15,645 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:21:15,647 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:21:15,813 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:21:15,813 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 08:21:15,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:21:15 BoogieIcfgContainer [2024-11-12 08:21:15,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:21:15,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:21:15,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:21:15,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:21:15,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:21:14" (1/3) ... [2024-11-12 08:21:15,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5edd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:21:15, skipping insertion in model container [2024-11-12 08:21:15,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:15" (2/3) ... [2024-11-12 08:21:15,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5edd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:21:15, skipping insertion in model container [2024-11-12 08:21:15,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:21:15" (3/3) ... [2024-11-12 08:21:15,823 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-11-12 08:21:15,837 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:21:15,837 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:21:15,837 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:21:15,892 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:21:15,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2024-11-12 08:21:15,960 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-12 08:21:15,960 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:21:15,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 3/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-12 08:21:15,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow [2024-11-12 08:21:15,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 60 flow [2024-11-12 08:21:15,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:21:15,990 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;@5679332b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:21:15,991 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:21:16,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:21:16,005 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-12 08:21:16,005 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:21:16,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:16,007 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:16,007 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:16,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash 329837544, now seen corresponding path program 1 times [2024-11-12 08:21:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487612950] [2024-11-12 08:21:16,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:16,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487612950] [2024-11-12 08:21:16,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487612950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:16,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:16,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:21:16,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341949722] [2024-11-12 08:21:16,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:16,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:16,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:16,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-11-12 08:21:16,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:16,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:16,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:16,996 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-12 08:21:17,000 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-12 08:21:17,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1779 event pairs, 124 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-12 08:21:17,018 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-12 08:21:17,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-12 08:21:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-12 08:21:17,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 08:21:17,037 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 3 states and 50 transitions. [2024-11-12 08:21:17,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-12 08:21:17,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:21:17,045 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-12 08:21:17,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-11-12 08:21:17,052 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-11-12 08:21:17,053 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-12 08:21:17,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-11-12 08:21:17,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:17,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:17,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:21:17,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:17,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1373076166, now seen corresponding path program 1 times [2024-11-12 08:21:17,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:17,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305904520] [2024-11-12 08:21:17,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:17,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:17,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:17,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305904520] [2024-11-12 08:21:17,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305904520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:17,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:17,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:17,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638114399] [2024-11-12 08:21:17,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:17,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:17,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:17,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:17,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:17,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:17,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:17,652 INFO L124 PetriNetUnfolderBase]: 544/771 cut-off events. [2024-11-12 08:21:17,652 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-12 08:21:17,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 771 events. 544/771 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2516 event pairs, 203 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 545. Up to 554 conditions per place. [2024-11-12 08:21:17,660 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 47 selfloop transitions, 18 changer transitions 3/69 dead transitions. [2024-11-12 08:21:17,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 69 transitions, 347 flow [2024-11-12 08:21:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-12 08:21:17,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-11-12 08:21:17,663 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 7 states and 87 transitions. [2024-11-12 08:21:17,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 69 transitions, 347 flow [2024-11-12 08:21:17,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:17,666 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 198 flow [2024-11-12 08:21:17,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=34, PETRI_TRANSITIONS=40} [2024-11-12 08:21:17,667 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-11-12 08:21:17,668 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 198 flow [2024-11-12 08:21:17,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:17,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:17,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:17,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:21:17,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:17,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1366783543, now seen corresponding path program 1 times [2024-11-12 08:21:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153704820] [2024-11-12 08:21:17,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:17,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153704820] [2024-11-12 08:21:17,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153704820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:17,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824822178] [2024-11-12 08:21:17,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:17,890 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) [2024-11-12 08:21:17,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:21:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:18,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:21:18,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:18,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:18,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824822178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:18,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:18,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-11-12 08:21:18,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155029544] [2024-11-12 08:21:18,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:18,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:21:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:21:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:21:18,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:18,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 198 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 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) [2024-11-12 08:21:18,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:18,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:18,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:20,182 INFO L124 PetriNetUnfolderBase]: 1135/1672 cut-off events. [2024-11-12 08:21:20,183 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-11-12 08:21:20,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5285 conditions, 1672 events. 1135/1672 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7015 event pairs, 142 based on Foata normal form. 24/1696 useless extension candidates. Maximal degree in co-relation 3157. Up to 542 conditions per place. [2024-11-12 08:21:20,197 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 170 selfloop transitions, 60 changer transitions 0/231 dead transitions. [2024-11-12 08:21:20,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 231 transitions, 1367 flow [2024-11-12 08:21:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 08:21:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 08:21:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 300 transitions. [2024-11-12 08:21:20,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-12 08:21:20,201 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 198 flow. Second operand 22 states and 300 transitions. [2024-11-12 08:21:20,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 231 transitions, 1367 flow [2024-11-12 08:21:20,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 231 transitions, 1345 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-12 08:21:20,212 INFO L231 Difference]: Finished difference. Result has 71 places, 94 transitions, 718 flow [2024-11-12 08:21:20,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=718, PETRI_PLACES=71, PETRI_TRANSITIONS=94} [2024-11-12 08:21:20,213 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2024-11-12 08:21:20,213 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 94 transitions, 718 flow [2024-11-12 08:21:20,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 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) [2024-11-12 08:21:20,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:20,214 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:20,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 08:21:20,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:20,419 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:20,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1901869040, now seen corresponding path program 2 times [2024-11-12 08:21:20,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299942977] [2024-11-12 08:21:20,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:20,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:20,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299942977] [2024-11-12 08:21:20,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299942977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:20,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:20,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:20,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551313694] [2024-11-12 08:21:20,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:20,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:20,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:20,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:20,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 94 transitions, 718 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:20,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:20,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:20,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:21,149 INFO L124 PetriNetUnfolderBase]: 1536/2293 cut-off events. [2024-11-12 08:21:21,152 INFO L125 PetriNetUnfolderBase]: For 21136/21136 co-relation queries the response was YES. [2024-11-12 08:21:21,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12756 conditions, 2293 events. 1536/2293 cut-off events. For 21136/21136 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10310 event pairs, 475 based on Foata normal form. 8/2301 useless extension candidates. Maximal degree in co-relation 9708. Up to 1296 conditions per place. [2024-11-12 08:21:21,177 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 150 selfloop transitions, 30 changer transitions 4/185 dead transitions. [2024-11-12 08:21:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 185 transitions, 1736 flow [2024-11-12 08:21:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-11-12 08:21:21,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-11-12 08:21:21,180 INFO L175 Difference]: Start difference. First operand has 71 places, 94 transitions, 718 flow. Second operand 7 states and 92 transitions. [2024-11-12 08:21:21,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 185 transitions, 1736 flow [2024-11-12 08:21:21,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 185 transitions, 1600 flow, removed 68 selfloop flow, removed 0 redundant places. [2024-11-12 08:21:21,249 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 861 flow [2024-11-12 08:21:21,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=861, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2024-11-12 08:21:21,251 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 54 predicate places. [2024-11-12 08:21:21,252 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 861 flow [2024-11-12 08:21:21,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:21,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:21,252 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:21,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:21:21,252 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:21,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1898738297, now seen corresponding path program 2 times [2024-11-12 08:21:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:21,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647498074] [2024-11-12 08:21:21,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:21,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:21,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:21,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647498074] [2024-11-12 08:21:21,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647498074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:21,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034939190] [2024-11-12 08:21:21,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:21:21,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:21,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:21,428 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) [2024-11-12 08:21:21,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:21:21,496 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:21,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:21,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 08:21:21,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:21,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034939190] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:22,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:21:22,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-12 08:21:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676321665] [2024-11-12 08:21:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:22,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:21:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:21:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-12 08:21:22,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:22,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 861 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:22,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:22,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:22,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:22,662 INFO L124 PetriNetUnfolderBase]: 1750/2634 cut-off events. [2024-11-12 08:21:22,663 INFO L125 PetriNetUnfolderBase]: For 28640/28640 co-relation queries the response was YES. [2024-11-12 08:21:22,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15869 conditions, 2634 events. 1750/2634 cut-off events. For 28640/28640 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12058 event pairs, 390 based on Foata normal form. 14/2648 useless extension candidates. Maximal degree in co-relation 12512. Up to 810 conditions per place. [2024-11-12 08:21:22,692 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 141 selfloop transitions, 51 changer transitions 0/193 dead transitions. [2024-11-12 08:21:22,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 193 transitions, 1992 flow [2024-11-12 08:21:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:21:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:21:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-11-12 08:21:22,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-11-12 08:21:22,694 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 861 flow. Second operand 8 states and 119 transitions. [2024-11-12 08:21:22,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 193 transitions, 1992 flow [2024-11-12 08:21:22,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 193 transitions, 1848 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:22,770 INFO L231 Difference]: Finished difference. Result has 91 places, 125 transitions, 1154 flow [2024-11-12 08:21:22,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1154, PETRI_PLACES=91, PETRI_TRANSITIONS=125} [2024-11-12 08:21:22,771 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-11-12 08:21:22,771 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 125 transitions, 1154 flow [2024-11-12 08:21:22,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:22,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:22,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:22,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 08:21:22,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:22,975 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:22,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash 864832696, now seen corresponding path program 1 times [2024-11-12 08:21:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:22,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003181243] [2024-11-12 08:21:22,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003181243] [2024-11-12 08:21:23,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003181243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:23,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:23,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:23,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165320624] [2024-11-12 08:21:23,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:23,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:23,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:23,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:23,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 125 transitions, 1154 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:23,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:23,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:23,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:23,785 INFO L124 PetriNetUnfolderBase]: 1808/2716 cut-off events. [2024-11-12 08:21:23,786 INFO L125 PetriNetUnfolderBase]: For 27896/27896 co-relation queries the response was YES. [2024-11-12 08:21:23,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 2716 events. 1808/2716 cut-off events. For 27896/27896 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 12618 event pairs, 771 based on Foata normal form. 4/2720 useless extension candidates. Maximal degree in co-relation 15352. Up to 2231 conditions per place. [2024-11-12 08:21:23,819 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 142 selfloop transitions, 37 changer transitions 5/185 dead transitions. [2024-11-12 08:21:23,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 185 transitions, 2093 flow [2024-11-12 08:21:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-12 08:21:23,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-12 08:21:23,821 INFO L175 Difference]: Start difference. First operand has 91 places, 125 transitions, 1154 flow. Second operand 7 states and 90 transitions. [2024-11-12 08:21:23,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 185 transitions, 2093 flow [2024-11-12 08:21:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 185 transitions, 2087 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-12 08:21:23,896 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1515 flow [2024-11-12 08:21:23,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1515, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-11-12 08:21:23,897 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 74 predicate places. [2024-11-12 08:21:23,897 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1515 flow [2024-11-12 08:21:23,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:23,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:23,898 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:23,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:21:23,898 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:23,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2041957270, now seen corresponding path program 2 times [2024-11-12 08:21:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643983659] [2024-11-12 08:21:23,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:24,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:24,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643983659] [2024-11-12 08:21:24,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643983659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:24,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:24,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250657491] [2024-11-12 08:21:24,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:24,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:24,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:24,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:24,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1515 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:24,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:24,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:24,637 INFO L124 PetriNetUnfolderBase]: 2003/2970 cut-off events. [2024-11-12 08:21:24,637 INFO L125 PetriNetUnfolderBase]: For 42009/42009 co-relation queries the response was YES. [2024-11-12 08:21:24,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19496 conditions, 2970 events. 2003/2970 cut-off events. For 42009/42009 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 13732 event pairs, 686 based on Foata normal form. 4/2974 useless extension candidates. Maximal degree in co-relation 18635. Up to 2266 conditions per place. [2024-11-12 08:21:24,674 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 158 selfloop transitions, 87 changer transitions 5/251 dead transitions. [2024-11-12 08:21:24,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 251 transitions, 3314 flow [2024-11-12 08:21:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-12 08:21:24,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2024-11-12 08:21:24,676 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1515 flow. Second operand 7 states and 86 transitions. [2024-11-12 08:21:24,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 251 transitions, 3314 flow [2024-11-12 08:21:24,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 251 transitions, 3018 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:24,782 INFO L231 Difference]: Finished difference. Result has 108 places, 181 transitions, 2199 flow [2024-11-12 08:21:24,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2199, PETRI_PLACES=108, PETRI_TRANSITIONS=181} [2024-11-12 08:21:24,783 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 80 predicate places. [2024-11-12 08:21:24,783 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 181 transitions, 2199 flow [2024-11-12 08:21:24,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:24,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:24,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:24,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 08:21:24,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:24,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1873234894, now seen corresponding path program 3 times [2024-11-12 08:21:24,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110518952] [2024-11-12 08:21:24,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:24,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:24,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110518952] [2024-11-12 08:21:24,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110518952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:24,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117584872] [2024-11-12 08:21:24,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:21:24,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:24,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:24,948 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) [2024-11-12 08:21:24,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:21:25,025 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:21:25,026 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:25,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:21:25,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:25,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:25,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117584872] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:25,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:21:25,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 16 [2024-11-12 08:21:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965971827] [2024-11-12 08:21:25,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:25,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:25,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:25,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:21:25,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:25,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 181 transitions, 2199 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:25,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:25,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:25,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:26,031 INFO L124 PetriNetUnfolderBase]: 2252/3296 cut-off events. [2024-11-12 08:21:26,032 INFO L125 PetriNetUnfolderBase]: For 50984/50984 co-relation queries the response was YES. [2024-11-12 08:21:26,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23082 conditions, 3296 events. 2252/3296 cut-off events. For 50984/50984 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15201 event pairs, 615 based on Foata normal form. 13/3309 useless extension candidates. Maximal degree in co-relation 22489. Up to 1518 conditions per place. [2024-11-12 08:21:26,088 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 209 selfloop transitions, 41 changer transitions 1/252 dead transitions. [2024-11-12 08:21:26,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 252 transitions, 3554 flow [2024-11-12 08:21:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:21:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:21:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-12 08:21:26,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-11-12 08:21:26,090 INFO L175 Difference]: Start difference. First operand has 108 places, 181 transitions, 2199 flow. Second operand 6 states and 86 transitions. [2024-11-12 08:21:26,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 252 transitions, 3554 flow [2024-11-12 08:21:26,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 252 transitions, 3230 flow, removed 162 selfloop flow, removed 0 redundant places. [2024-11-12 08:21:26,248 INFO L231 Difference]: Finished difference. Result has 116 places, 199 transitions, 2495 flow [2024-11-12 08:21:26,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2495, PETRI_PLACES=116, PETRI_TRANSITIONS=199} [2024-11-12 08:21:26,249 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 88 predicate places. [2024-11-12 08:21:26,249 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 199 transitions, 2495 flow [2024-11-12 08:21:26,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:26,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:26,250 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:26,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 08:21:26,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:26,451 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:26,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash -341399118, now seen corresponding path program 4 times [2024-11-12 08:21:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058651305] [2024-11-12 08:21:26,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:26,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:26,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058651305] [2024-11-12 08:21:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058651305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:26,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:26,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996695802] [2024-11-12 08:21:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:26,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:26,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:26,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 199 transitions, 2495 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:26,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:26,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:26,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:27,205 INFO L124 PetriNetUnfolderBase]: 2260/3308 cut-off events. [2024-11-12 08:21:27,206 INFO L125 PetriNetUnfolderBase]: For 51127/51127 co-relation queries the response was YES. [2024-11-12 08:21:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22751 conditions, 3308 events. 2260/3308 cut-off events. For 51127/51127 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15253 event pairs, 696 based on Foata normal form. 2/3310 useless extension candidates. Maximal degree in co-relation 22157. Up to 2474 conditions per place. [2024-11-12 08:21:27,245 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 168 selfloop transitions, 100 changer transitions 3/272 dead transitions. [2024-11-12 08:21:27,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 272 transitions, 3855 flow [2024-11-12 08:21:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-11-12 08:21:27,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-12 08:21:27,247 INFO L175 Difference]: Start difference. First operand has 116 places, 199 transitions, 2495 flow. Second operand 7 states and 85 transitions. [2024-11-12 08:21:27,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 272 transitions, 3855 flow [2024-11-12 08:21:27,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 272 transitions, 3719 flow, removed 59 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:27,561 INFO L231 Difference]: Finished difference. Result has 125 places, 230 transitions, 3169 flow [2024-11-12 08:21:27,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3169, PETRI_PLACES=125, PETRI_TRANSITIONS=230} [2024-11-12 08:21:27,562 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 97 predicate places. [2024-11-12 08:21:27,562 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 230 transitions, 3169 flow [2024-11-12 08:21:27,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:27,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:27,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:27,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 08:21:27,562 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:27,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1569627070, now seen corresponding path program 5 times [2024-11-12 08:21:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:27,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640215468] [2024-11-12 08:21:27,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:27,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:27,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:27,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640215468] [2024-11-12 08:21:27,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640215468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:27,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:27,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:27,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480879371] [2024-11-12 08:21:27,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:27,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:27,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:27,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 230 transitions, 3169 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:27,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:27,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:27,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:28,465 INFO L124 PetriNetUnfolderBase]: 2351/3476 cut-off events. [2024-11-12 08:21:28,466 INFO L125 PetriNetUnfolderBase]: For 55075/55075 co-relation queries the response was YES. [2024-11-12 08:21:28,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24881 conditions, 3476 events. 2351/3476 cut-off events. For 55075/55075 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16572 event pairs, 476 based on Foata normal form. 10/3486 useless extension candidates. Maximal degree in co-relation 24283. Up to 1870 conditions per place. [2024-11-12 08:21:28,511 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 230 selfloop transitions, 105 changer transitions 12/348 dead transitions. [2024-11-12 08:21:28,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 348 transitions, 5331 flow [2024-11-12 08:21:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-11-12 08:21:28,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-11-12 08:21:28,513 INFO L175 Difference]: Start difference. First operand has 125 places, 230 transitions, 3169 flow. Second operand 7 states and 88 transitions. [2024-11-12 08:21:28,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 348 transitions, 5331 flow [2024-11-12 08:21:28,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 348 transitions, 5119 flow, removed 106 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:28,774 INFO L231 Difference]: Finished difference. Result has 133 places, 247 transitions, 3625 flow [2024-11-12 08:21:28,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3625, PETRI_PLACES=133, PETRI_TRANSITIONS=247} [2024-11-12 08:21:28,775 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 105 predicate places. [2024-11-12 08:21:28,775 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 247 transitions, 3625 flow [2024-11-12 08:21:28,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:28,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:28,776 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:28,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 08:21:28,776 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:28,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2054293548, now seen corresponding path program 6 times [2024-11-12 08:21:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:28,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577491002] [2024-11-12 08:21:28,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:28,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577491002] [2024-11-12 08:21:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577491002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405744572] [2024-11-12 08:21:28,932 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:21:28,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:28,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:28,934 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) [2024-11-12 08:21:28,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:21:29,015 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:21:29,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:29,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 08:21:29,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:29,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405744572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:29,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:29,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-12 08:21:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202928274] [2024-11-12 08:21:29,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:29,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 08:21:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 08:21:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-12 08:21:29,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:29,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 247 transitions, 3625 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-11-12 08:21:29,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:29,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:29,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:30,307 INFO L124 PetriNetUnfolderBase]: 2490/3727 cut-off events. [2024-11-12 08:21:30,307 INFO L125 PetriNetUnfolderBase]: For 57666/57666 co-relation queries the response was YES. [2024-11-12 08:21:30,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26488 conditions, 3727 events. 2490/3727 cut-off events. For 57666/57666 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 18274 event pairs, 476 based on Foata normal form. 16/3743 useless extension candidates. Maximal degree in co-relation 25850. Up to 1234 conditions per place. [2024-11-12 08:21:30,361 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 172 selfloop transitions, 183 changer transitions 1/357 dead transitions. [2024-11-12 08:21:30,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 357 transitions, 5379 flow [2024-11-12 08:21:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:21:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:21:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-11-12 08:21:30,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-12 08:21:30,364 INFO L175 Difference]: Start difference. First operand has 133 places, 247 transitions, 3625 flow. Second operand 10 states and 140 transitions. [2024-11-12 08:21:30,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 357 transitions, 5379 flow [2024-11-12 08:21:30,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 357 transitions, 5092 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:30,594 INFO L231 Difference]: Finished difference. Result has 143 places, 277 transitions, 4374 flow [2024-11-12 08:21:30,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4374, PETRI_PLACES=143, PETRI_TRANSITIONS=277} [2024-11-12 08:21:30,595 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2024-11-12 08:21:30,595 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 277 transitions, 4374 flow [2024-11-12 08:21:30,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-11-12 08:21:30,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:30,596 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:30,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:21:30,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:30,800 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:30,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1556488846, now seen corresponding path program 7 times [2024-11-12 08:21:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436692043] [2024-11-12 08:21:30,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:30,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:30,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436692043] [2024-11-12 08:21:30,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436692043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080543747] [2024-11-12 08:21:30,951 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:21:30,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:30,953 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) [2024-11-12 08:21:30,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:21:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:31,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:21:31,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:31,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080543747] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:21:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2024-11-12 08:21:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603781048] [2024-11-12 08:21:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:31,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:21:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:21:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-12 08:21:31,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:31,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 277 transitions, 4374 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:31,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:31,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:31,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:31,994 INFO L124 PetriNetUnfolderBase]: 2900/4323 cut-off events. [2024-11-12 08:21:31,994 INFO L125 PetriNetUnfolderBase]: For 72011/72011 co-relation queries the response was YES. [2024-11-12 08:21:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31804 conditions, 4323 events. 2900/4323 cut-off events. For 72011/72011 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 21732 event pairs, 421 based on Foata normal form. 13/4336 useless extension candidates. Maximal degree in co-relation 31318. Up to 1452 conditions per place. [2024-11-12 08:21:32,058 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 295 selfloop transitions, 120 changer transitions 2/418 dead transitions. [2024-11-12 08:21:32,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 418 transitions, 7009 flow [2024-11-12 08:21:32,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:21:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:21:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-11-12 08:21:32,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-12 08:21:32,060 INFO L175 Difference]: Start difference. First operand has 143 places, 277 transitions, 4374 flow. Second operand 8 states and 124 transitions. [2024-11-12 08:21:32,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 418 transitions, 7009 flow [2024-11-12 08:21:32,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 418 transitions, 6772 flow, removed 75 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:32,456 INFO L231 Difference]: Finished difference. Result has 154 places, 324 transitions, 5480 flow [2024-11-12 08:21:32,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=4213, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5480, PETRI_PLACES=154, PETRI_TRANSITIONS=324} [2024-11-12 08:21:32,457 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2024-11-12 08:21:32,457 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 324 transitions, 5480 flow [2024-11-12 08:21:32,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:32,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:32,458 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:32,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 08:21:32,658 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,SelfDestructingSolverStorable11 [2024-11-12 08:21:32,659 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:32,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1823769332, now seen corresponding path program 8 times [2024-11-12 08:21:32,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:32,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929330772] [2024-11-12 08:21:32,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:32,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:32,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:32,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929330772] [2024-11-12 08:21:32,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929330772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:32,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435822192] [2024-11-12 08:21:32,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:21:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:32,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:32,788 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) [2024-11-12 08:21:32,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:21:32,863 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:32,863 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:32,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:21:32,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:32,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:33,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435822192] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:33,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:21:33,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 15 [2024-11-12 08:21:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648835257] [2024-11-12 08:21:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:33,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:33,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:21:33,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:33,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 324 transitions, 5480 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:33,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:33,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:33,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:34,145 INFO L124 PetriNetUnfolderBase]: 3064/4649 cut-off events. [2024-11-12 08:21:34,147 INFO L125 PetriNetUnfolderBase]: For 78830/78830 co-relation queries the response was YES. [2024-11-12 08:21:34,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34388 conditions, 4649 events. 3064/4649 cut-off events. For 78830/78830 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 24430 event pairs, 591 based on Foata normal form. 18/4667 useless extension candidates. Maximal degree in co-relation 33898. Up to 1564 conditions per place. [2024-11-12 08:21:34,202 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 249 selfloop transitions, 167 changer transitions 2/419 dead transitions. [2024-11-12 08:21:34,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 419 transitions, 7303 flow [2024-11-12 08:21:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:21:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:21:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-11-12 08:21:34,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-11-12 08:21:34,204 INFO L175 Difference]: Start difference. First operand has 154 places, 324 transitions, 5480 flow. Second operand 8 states and 123 transitions. [2024-11-12 08:21:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 419 transitions, 7303 flow [2024-11-12 08:21:34,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 419 transitions, 7233 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-11-12 08:21:34,693 INFO L231 Difference]: Finished difference. Result has 164 places, 343 transitions, 6283 flow [2024-11-12 08:21:34,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=5418, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6283, PETRI_PLACES=164, PETRI_TRANSITIONS=343} [2024-11-12 08:21:34,694 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 136 predicate places. [2024-11-12 08:21:34,694 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 343 transitions, 6283 flow [2024-11-12 08:21:34,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:34,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:34,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:34,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:34,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:34,896 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:34,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash 947506202, now seen corresponding path program 9 times [2024-11-12 08:21:34,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408494234] [2024-11-12 08:21:34,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:35,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:35,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408494234] [2024-11-12 08:21:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408494234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:35,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490771046] [2024-11-12 08:21:35,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:21:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:35,027 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) [2024-11-12 08:21:35,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:21:35,097 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:21:35,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:35,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:21:35,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:35,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:35,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490771046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:35,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:35,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-12 08:21:35,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035199035] [2024-11-12 08:21:35,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:35,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:21:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:35,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:21:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:21:35,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:35,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 343 transitions, 6283 flow. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 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) [2024-11-12 08:21:35,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:35,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:35,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:37,184 INFO L124 PetriNetUnfolderBase]: 4248/6494 cut-off events. [2024-11-12 08:21:37,184 INFO L125 PetriNetUnfolderBase]: For 129067/129067 co-relation queries the response was YES. [2024-11-12 08:21:37,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49795 conditions, 6494 events. 4248/6494 cut-off events. For 129067/129067 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 37139 event pairs, 525 based on Foata normal form. 27/6521 useless extension candidates. Maximal degree in co-relation 48861. Up to 2258 conditions per place. [2024-11-12 08:21:37,261 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 353 selfloop transitions, 370 changer transitions 11/735 dead transitions. [2024-11-12 08:21:37,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 735 transitions, 14221 flow [2024-11-12 08:21:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 08:21:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 08:21:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 265 transitions. [2024-11-12 08:21:37,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-11-12 08:21:37,264 INFO L175 Difference]: Start difference. First operand has 164 places, 343 transitions, 6283 flow. Second operand 21 states and 265 transitions. [2024-11-12 08:21:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 735 transitions, 14221 flow [2024-11-12 08:21:38,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 735 transitions, 14122 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:38,172 INFO L231 Difference]: Finished difference. Result has 199 places, 572 transitions, 12271 flow [2024-11-12 08:21:38,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=6228, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12271, PETRI_PLACES=199, PETRI_TRANSITIONS=572} [2024-11-12 08:21:38,172 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 171 predicate places. [2024-11-12 08:21:38,173 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 572 transitions, 12271 flow [2024-11-12 08:21:38,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 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) [2024-11-12 08:21:38,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:38,173 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:38,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:38,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:38,374 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:38,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash -311585256, now seen corresponding path program 10 times [2024-11-12 08:21:38,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:38,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127948306] [2024-11-12 08:21:38,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:38,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127948306] [2024-11-12 08:21:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127948306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:38,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510222853] [2024-11-12 08:21:38,503 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:21:38,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:38,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:38,505 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) [2024-11-12 08:21:38,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:21:38,569 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:21:38,569 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:38,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 08:21:38,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:38,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:38,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510222853] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:38,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:21:38,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 16 [2024-11-12 08:21:38,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32440160] [2024-11-12 08:21:38,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:38,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:38,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:38,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:38,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:21:38,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:38,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 572 transitions, 12271 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:38,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:38,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:38,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:40,262 INFO L124 PetriNetUnfolderBase]: 4202/6444 cut-off events. [2024-11-12 08:21:40,262 INFO L125 PetriNetUnfolderBase]: For 162373/162373 co-relation queries the response was YES. [2024-11-12 08:21:40,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55987 conditions, 6444 events. 4202/6444 cut-off events. For 162373/162373 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 36957 event pairs, 769 based on Foata normal form. 26/6470 useless extension candidates. Maximal degree in co-relation 55166. Up to 3704 conditions per place. [2024-11-12 08:21:40,326 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 515 selfloop transitions, 122 changer transitions 3/641 dead transitions. [2024-11-12 08:21:40,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 641 transitions, 14380 flow [2024-11-12 08:21:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:21:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:21:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-12 08:21:40,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-12 08:21:40,328 INFO L175 Difference]: Start difference. First operand has 199 places, 572 transitions, 12271 flow. Second operand 6 states and 87 transitions. [2024-11-12 08:21:40,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 641 transitions, 14380 flow [2024-11-12 08:21:41,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 641 transitions, 13935 flow, removed 196 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:41,487 INFO L231 Difference]: Finished difference. Result has 204 places, 572 transitions, 12129 flow [2024-11-12 08:21:41,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11872, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12129, PETRI_PLACES=204, PETRI_TRANSITIONS=572} [2024-11-12 08:21:41,487 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 176 predicate places. [2024-11-12 08:21:41,488 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 572 transitions, 12129 flow [2024-11-12 08:21:41,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:41,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:41,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:41,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:41,688 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,SelfDestructingSolverStorable14 [2024-11-12 08:21:41,689 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:41,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:41,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2144236758, now seen corresponding path program 3 times [2024-11-12 08:21:41,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:41,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636883201] [2024-11-12 08:21:41,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:41,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:41,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636883201] [2024-11-12 08:21:41,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636883201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:41,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:41,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:41,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239734179] [2024-11-12 08:21:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:41,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:41,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:41,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:41,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 572 transitions, 12129 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:41,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:41,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:41,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:43,194 INFO L124 PetriNetUnfolderBase]: 4204/6473 cut-off events. [2024-11-12 08:21:43,194 INFO L125 PetriNetUnfolderBase]: For 167903/167903 co-relation queries the response was YES. [2024-11-12 08:21:43,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55531 conditions, 6473 events. 4204/6473 cut-off events. For 167903/167903 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 37371 event pairs, 1084 based on Foata normal form. 16/6489 useless extension candidates. Maximal degree in co-relation 54877. Up to 4507 conditions per place. [2024-11-12 08:21:43,262 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 515 selfloop transitions, 96 changer transitions 19/631 dead transitions. [2024-11-12 08:21:43,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 631 transitions, 14067 flow [2024-11-12 08:21:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-11-12 08:21:43,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-12 08:21:43,264 INFO L175 Difference]: Start difference. First operand has 204 places, 572 transitions, 12129 flow. Second operand 7 states and 98 transitions. [2024-11-12 08:21:43,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 631 transitions, 14067 flow [2024-11-12 08:21:44,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 631 transitions, 13909 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:44,616 INFO L231 Difference]: Finished difference. Result has 209 places, 569 transitions, 12126 flow [2024-11-12 08:21:44,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11983, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12126, PETRI_PLACES=209, PETRI_TRANSITIONS=569} [2024-11-12 08:21:44,617 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 181 predicate places. [2024-11-12 08:21:44,618 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 569 transitions, 12126 flow [2024-11-12 08:21:44,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:44,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:44,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:44,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 08:21:44,618 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:44,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1846175003, now seen corresponding path program 3 times [2024-11-12 08:21:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:44,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624161798] [2024-11-12 08:21:44,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:44,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:44,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624161798] [2024-11-12 08:21:44,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624161798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:44,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:44,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195849341] [2024-11-12 08:21:44,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:44,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:44,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:44,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:44,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 569 transitions, 12126 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:44,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:44,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:44,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:46,259 INFO L124 PetriNetUnfolderBase]: 4184/6429 cut-off events. [2024-11-12 08:21:46,259 INFO L125 PetriNetUnfolderBase]: For 161858/161858 co-relation queries the response was YES. [2024-11-12 08:21:46,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55375 conditions, 6429 events. 4184/6429 cut-off events. For 161858/161858 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 36969 event pairs, 1087 based on Foata normal form. 3/6432 useless extension candidates. Maximal degree in co-relation 55165. Up to 4507 conditions per place. [2024-11-12 08:21:46,336 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 514 selfloop transitions, 98 changer transitions 8/621 dead transitions. [2024-11-12 08:21:46,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 621 transitions, 13982 flow [2024-11-12 08:21:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:21:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:21:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-11-12 08:21:46,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-11-12 08:21:46,338 INFO L175 Difference]: Start difference. First operand has 209 places, 569 transitions, 12126 flow. Second operand 7 states and 92 transitions. [2024-11-12 08:21:46,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 621 transitions, 13982 flow [2024-11-12 08:21:47,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 621 transitions, 13780 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-12 08:21:47,520 INFO L231 Difference]: Finished difference. Result has 209 places, 570 transitions, 12162 flow [2024-11-12 08:21:47,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11924, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12162, PETRI_PLACES=209, PETRI_TRANSITIONS=570} [2024-11-12 08:21:47,521 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 181 predicate places. [2024-11-12 08:21:47,521 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 570 transitions, 12162 flow [2024-11-12 08:21:47,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:47,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:47,521 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:47,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 08:21:47,522 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:47,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash 337231503, now seen corresponding path program 4 times [2024-11-12 08:21:47,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:47,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259774984] [2024-11-12 08:21:47,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:47,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:47,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259774984] [2024-11-12 08:21:47,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259774984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353626812] [2024-11-12 08:21:47,642 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:21:47,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:47,644 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) [2024-11-12 08:21:47,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 08:21:47,743 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:21:47,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:47,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 08:21:47,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:47,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:47,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353626812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:47,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:47,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-12 08:21:47,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811751168] [2024-11-12 08:21:47,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:47,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 08:21:47,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:47,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 08:21:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-12 08:21:47,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:47,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 570 transitions, 12162 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-11-12 08:21:47,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:47,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:47,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:49,713 INFO L124 PetriNetUnfolderBase]: 4289/6599 cut-off events. [2024-11-12 08:21:49,713 INFO L125 PetriNetUnfolderBase]: For 166389/166389 co-relation queries the response was YES. [2024-11-12 08:21:49,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56718 conditions, 6599 events. 4289/6599 cut-off events. For 166389/166389 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 38272 event pairs, 1067 based on Foata normal form. 21/6620 useless extension candidates. Maximal degree in co-relation 56022. Up to 4507 conditions per place. [2024-11-12 08:21:49,788 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 513 selfloop transitions, 143 changer transitions 5/662 dead transitions. [2024-11-12 08:21:49,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 662 transitions, 14671 flow [2024-11-12 08:21:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:21:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:21:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-11-12 08:21:49,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.504 [2024-11-12 08:21:49,790 INFO L175 Difference]: Start difference. First operand has 209 places, 570 transitions, 12162 flow. Second operand 10 states and 126 transitions. [2024-11-12 08:21:49,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 662 transitions, 14671 flow [2024-11-12 08:21:50,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 662 transitions, 14480 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:50,963 INFO L231 Difference]: Finished difference. Result has 219 places, 599 transitions, 12991 flow [2024-11-12 08:21:50,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11972, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12991, PETRI_PLACES=219, PETRI_TRANSITIONS=599} [2024-11-12 08:21:50,964 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 191 predicate places. [2024-11-12 08:21:50,964 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 599 transitions, 12991 flow [2024-11-12 08:21:50,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-11-12 08:21:50,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:50,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:50,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 08:21:51,164 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,SelfDestructingSolverStorable17 [2024-11-12 08:21:51,165 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:51,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1983829244, now seen corresponding path program 11 times [2024-11-12 08:21:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60530281] [2024-11-12 08:21:51,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:51,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60530281] [2024-11-12 08:21:51,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60530281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183490879] [2024-11-12 08:21:51,272 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:21:51,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:51,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:51,274 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) [2024-11-12 08:21:51,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 08:21:51,348 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:21:51,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:51,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:21:51,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:51,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183490879] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:51,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:21:51,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-11-12 08:21:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786141500] [2024-11-12 08:21:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:51,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:21:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:21:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:21:51,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:51,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 599 transitions, 12991 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:51,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:51,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:51,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:53,185 INFO L124 PetriNetUnfolderBase]: 4258/6557 cut-off events. [2024-11-12 08:21:53,185 INFO L125 PetriNetUnfolderBase]: For 170349/170349 co-relation queries the response was YES. [2024-11-12 08:21:53,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57591 conditions, 6557 events. 4258/6557 cut-off events. For 170349/170349 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 38009 event pairs, 796 based on Foata normal form. 26/6583 useless extension candidates. Maximal degree in co-relation 56878. Up to 3655 conditions per place. [2024-11-12 08:21:53,254 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 511 selfloop transitions, 151 changer transitions 3/666 dead transitions. [2024-11-12 08:21:53,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 666 transitions, 15221 flow [2024-11-12 08:21:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:21:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:21:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-11-12 08:21:53,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-12 08:21:53,256 INFO L175 Difference]: Start difference. First operand has 219 places, 599 transitions, 12991 flow. Second operand 6 states and 85 transitions. [2024-11-12 08:21:53,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 666 transitions, 15221 flow [2024-11-12 08:21:54,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 666 transitions, 14979 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-11-12 08:21:54,576 INFO L231 Difference]: Finished difference. Result has 222 places, 603 transitions, 13298 flow [2024-11-12 08:21:54,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=12749, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13298, PETRI_PLACES=222, PETRI_TRANSITIONS=603} [2024-11-12 08:21:54,577 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 194 predicate places. [2024-11-12 08:21:54,577 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 603 transitions, 13298 flow [2024-11-12 08:21:54,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:54,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:54,577 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:54,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 08:21:54,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:54,778 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:54,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash -610806502, now seen corresponding path program 12 times [2024-11-12 08:21:54,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:54,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860614816] [2024-11-12 08:21:54,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860614816] [2024-11-12 08:21:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860614816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741590829] [2024-11-12 08:21:54,910 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:21:54,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:54,912 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) [2024-11-12 08:21:54,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 08:21:54,979 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:21:54,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:21:54,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:21:54,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:55,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:55,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741590829] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:55,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:21:55,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-11-12 08:21:55,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963959480] [2024-11-12 08:21:55,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:55,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:21:55,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:55,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:21:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:21:55,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:55,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 603 transitions, 13298 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:55,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:55,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:55,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:56,831 INFO L124 PetriNetUnfolderBase]: 4223/6470 cut-off events. [2024-11-12 08:21:56,831 INFO L125 PetriNetUnfolderBase]: For 171881/171881 co-relation queries the response was YES. [2024-11-12 08:21:56,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58076 conditions, 6470 events. 4223/6470 cut-off events. For 171881/171881 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 37140 event pairs, 793 based on Foata normal form. 26/6496 useless extension candidates. Maximal degree in co-relation 57435. Up to 3625 conditions per place. [2024-11-12 08:21:56,898 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 515 selfloop transitions, 143 changer transitions 3/662 dead transitions. [2024-11-12 08:21:56,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 662 transitions, 15371 flow [2024-11-12 08:21:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:21:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:21:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-12 08:21:56,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-11-12 08:21:56,900 INFO L175 Difference]: Start difference. First operand has 222 places, 603 transitions, 13298 flow. Second operand 6 states and 86 transitions. [2024-11-12 08:21:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 662 transitions, 15371 flow [2024-11-12 08:21:58,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 662 transitions, 15295 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:58,168 INFO L231 Difference]: Finished difference. Result has 226 places, 601 transitions, 13474 flow [2024-11-12 08:21:58,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=13188, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13474, PETRI_PLACES=226, PETRI_TRANSITIONS=601} [2024-11-12 08:21:58,169 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 198 predicate places. [2024-11-12 08:21:58,169 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 601 transitions, 13474 flow [2024-11-12 08:21:58,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-12 08:21:58,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:58,169 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:58,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 08:21:58,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:58,371 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:21:58,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash -537590273, now seen corresponding path program 5 times [2024-11-12 08:21:58,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:58,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454429222] [2024-11-12 08:21:58,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:58,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:58,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454429222] [2024-11-12 08:21:58,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454429222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:58,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:58,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:21:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136925697] [2024-11-12 08:21:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:58,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:21:58,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:21:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:21:58,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:21:58,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 601 transitions, 13474 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:21:58,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:58,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:21:58,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:00,214 INFO L124 PetriNetUnfolderBase]: 4276/6551 cut-off events. [2024-11-12 08:22:00,215 INFO L125 PetriNetUnfolderBase]: For 182738/182738 co-relation queries the response was YES. [2024-11-12 08:22:00,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59560 conditions, 6551 events. 4276/6551 cut-off events. For 182738/182738 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 37657 event pairs, 1042 based on Foata normal form. 3/6554 useless extension candidates. Maximal degree in co-relation 58919. Up to 4385 conditions per place. [2024-11-12 08:22:00,311 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 516 selfloop transitions, 134 changer transitions 8/659 dead transitions. [2024-11-12 08:22:00,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 659 transitions, 15559 flow [2024-11-12 08:22:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:22:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:22:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-11-12 08:22:00,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-11-12 08:22:00,312 INFO L175 Difference]: Start difference. First operand has 226 places, 601 transitions, 13474 flow. Second operand 7 states and 92 transitions. [2024-11-12 08:22:00,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 659 transitions, 15559 flow [2024-11-12 08:22:01,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 659 transitions, 15273 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:22:01,686 INFO L231 Difference]: Finished difference. Result has 231 places, 609 transitions, 13705 flow [2024-11-12 08:22:01,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=13188, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13705, PETRI_PLACES=231, PETRI_TRANSITIONS=609} [2024-11-12 08:22:01,687 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 203 predicate places. [2024-11-12 08:22:01,687 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 609 transitions, 13705 flow [2024-11-12 08:22:01,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:22:01,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:01,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:01,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 08:22:01,688 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:22:01,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:01,688 INFO L85 PathProgramCache]: Analyzing trace with hash 326095273, now seen corresponding path program 6 times [2024-11-12 08:22:01,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:01,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775530509] [2024-11-12 08:22:01,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:01,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:01,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775530509] [2024-11-12 08:22:01,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775530509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:22:01,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:22:01,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:22:01,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943051051] [2024-11-12 08:22:01,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:22:01,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:22:01,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:22:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:22:01,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:22:01,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 609 transitions, 13705 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:22:01,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:01,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:22:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:03,705 INFO L124 PetriNetUnfolderBase]: 4281/6600 cut-off events. [2024-11-12 08:22:03,706 INFO L125 PetriNetUnfolderBase]: For 182564/182564 co-relation queries the response was YES. [2024-11-12 08:22:03,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59925 conditions, 6600 events. 4281/6600 cut-off events. For 182564/182564 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 38449 event pairs, 1046 based on Foata normal form. 18/6618 useless extension candidates. Maximal degree in co-relation 59175. Up to 4385 conditions per place. [2024-11-12 08:22:03,789 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 523 selfloop transitions, 129 changer transitions 13/666 dead transitions. [2024-11-12 08:22:03,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 666 transitions, 15717 flow [2024-11-12 08:22:03,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:22:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:22:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-11-12 08:22:03,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-12 08:22:03,790 INFO L175 Difference]: Start difference. First operand has 231 places, 609 transitions, 13705 flow. Second operand 7 states and 95 transitions. [2024-11-12 08:22:03,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 666 transitions, 15717 flow [2024-11-12 08:22:05,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 666 transitions, 15554 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-12 08:22:05,388 INFO L231 Difference]: Finished difference. Result has 235 places, 606 transitions, 13754 flow [2024-11-12 08:22:05,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=13550, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13754, PETRI_PLACES=235, PETRI_TRANSITIONS=606} [2024-11-12 08:22:05,389 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 207 predicate places. [2024-11-12 08:22:05,389 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 606 transitions, 13754 flow [2024-11-12 08:22:05,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:22:05,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:05,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:05,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 08:22:05,389 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:22:05,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash -635418947, now seen corresponding path program 7 times [2024-11-12 08:22:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609482249] [2024-11-12 08:22:05,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:05,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609482249] [2024-11-12 08:22:05,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609482249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:22:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163458546] [2024-11-12 08:22:05,507 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:22:05,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:22:05,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:22:05,509 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:22:05,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 08:22:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:05,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:22:05,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:22:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:05,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:22:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163458546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:22:05,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:22:05,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-11-12 08:22:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231333592] [2024-11-12 08:22:05,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:22:05,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:22:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:22:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:22:05,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:22:05,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 606 transitions, 13754 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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) [2024-11-12 08:22:05,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:05,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:22:05,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:07,814 INFO L124 PetriNetUnfolderBase]: 4302/6617 cut-off events. [2024-11-12 08:22:07,814 INFO L125 PetriNetUnfolderBase]: For 185638/185638 co-relation queries the response was YES. [2024-11-12 08:22:07,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60295 conditions, 6617 events. 4302/6617 cut-off events. For 185638/185638 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 38612 event pairs, 634 based on Foata normal form. 25/6642 useless extension candidates. Maximal degree in co-relation 60144. Up to 2438 conditions per place. [2024-11-12 08:22:07,886 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 653 selfloop transitions, 204 changer transitions 5/863 dead transitions. [2024-11-12 08:22:07,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 863 transitions, 20121 flow [2024-11-12 08:22:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 08:22:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 08:22:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 246 transitions. [2024-11-12 08:22:07,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-11-12 08:22:07,888 INFO L175 Difference]: Start difference. First operand has 235 places, 606 transitions, 13754 flow. Second operand 21 states and 246 transitions. [2024-11-12 08:22:07,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 863 transitions, 20121 flow [2024-11-12 08:22:09,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 863 transitions, 19847 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-12 08:22:09,334 INFO L231 Difference]: Finished difference. Result has 260 places, 640 transitions, 14683 flow [2024-11-12 08:22:09,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=13486, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14683, PETRI_PLACES=260, PETRI_TRANSITIONS=640} [2024-11-12 08:22:09,334 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 232 predicate places. [2024-11-12 08:22:09,334 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 640 transitions, 14683 flow [2024-11-12 08:22:09,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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) [2024-11-12 08:22:09,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:09,335 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:09,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 08:22:09,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-12 08:22:09,535 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:22:09,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1577548102, now seen corresponding path program 13 times [2024-11-12 08:22:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:09,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938470482] [2024-11-12 08:22:09,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:09,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:09,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938470482] [2024-11-12 08:22:09,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938470482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:22:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367917898] [2024-11-12 08:22:09,621 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:22:09,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:22:09,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:22:09,622 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:22:09,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 08:22:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:09,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:22:09,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:22:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:09,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:22:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:10,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367917898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:22:10,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:22:10,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-12 08:22:10,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466507660] [2024-11-12 08:22:10,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:22:10,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:22:10,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:10,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:22:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:22:10,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:22:10,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 640 transitions, 14683 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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) [2024-11-12 08:22:10,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:10,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:22:10,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:13,938 INFO L124 PetriNetUnfolderBase]: 6487/10022 cut-off events. [2024-11-12 08:22:13,939 INFO L125 PetriNetUnfolderBase]: For 302072/302072 co-relation queries the response was YES. [2024-11-12 08:22:14,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94546 conditions, 10022 events. 6487/10022 cut-off events. For 302072/302072 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 63032 event pairs, 941 based on Foata normal form. 57/10079 useless extension candidates. Maximal degree in co-relation 94173. Up to 4261 conditions per place. [2024-11-12 08:22:14,091 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 504 selfloop transitions, 688 changer transitions 2/1195 dead transitions. [2024-11-12 08:22:14,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1195 transitions, 27544 flow [2024-11-12 08:22:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:22:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:22:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 356 transitions. [2024-11-12 08:22:14,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5274074074074074 [2024-11-12 08:22:14,094 INFO L175 Difference]: Start difference. First operand has 260 places, 640 transitions, 14683 flow. Second operand 27 states and 356 transitions. [2024-11-12 08:22:14,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1195 transitions, 27544 flow [2024-11-12 08:22:16,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1195 transitions, 26993 flow, removed 53 selfloop flow, removed 11 redundant places. [2024-11-12 08:22:16,955 INFO L231 Difference]: Finished difference. Result has 287 places, 962 transitions, 24551 flow [2024-11-12 08:22:16,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=14224, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=24551, PETRI_PLACES=287, PETRI_TRANSITIONS=962} [2024-11-12 08:22:16,956 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 259 predicate places. [2024-11-12 08:22:16,956 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 962 transitions, 24551 flow [2024-11-12 08:22:16,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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) [2024-11-12 08:22:16,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:16,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:16,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 08:22:17,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-12 08:22:17,158 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:22:17,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:17,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1386874208, now seen corresponding path program 4 times [2024-11-12 08:22:17,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:17,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53050947] [2024-11-12 08:22:17,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:17,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:17,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53050947] [2024-11-12 08:22:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53050947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:22:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:22:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:22:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671248605] [2024-11-12 08:22:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:22:17,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:22:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:22:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:22:17,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:22:17,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 962 transitions, 24551 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:22:17,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:17,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:22:17,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:20,318 INFO L124 PetriNetUnfolderBase]: 6486/10063 cut-off events. [2024-11-12 08:22:20,319 INFO L125 PetriNetUnfolderBase]: For 355579/355579 co-relation queries the response was YES. [2024-11-12 08:22:20,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102908 conditions, 10063 events. 6486/10063 cut-off events. For 355579/355579 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 63542 event pairs, 1785 based on Foata normal form. 28/10091 useless extension candidates. Maximal degree in co-relation 102495. Up to 9128 conditions per place. [2024-11-12 08:22:20,455 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 873 selfloop transitions, 122 changer transitions 12/1008 dead transitions. [2024-11-12 08:22:20,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 1008 transitions, 27037 flow [2024-11-12 08:22:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:22:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:22:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-12 08:22:20,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571 [2024-11-12 08:22:20,457 INFO L175 Difference]: Start difference. First operand has 287 places, 962 transitions, 24551 flow. Second operand 7 states and 94 transitions. [2024-11-12 08:22:20,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 1008 transitions, 27037 flow [2024-11-12 08:22:24,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1008 transitions, 25823 flow, removed 501 selfloop flow, removed 4 redundant places. [2024-11-12 08:22:24,352 INFO L231 Difference]: Finished difference. Result has 292 places, 961 transitions, 23597 flow [2024-11-12 08:22:24,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=23316, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23597, PETRI_PLACES=292, PETRI_TRANSITIONS=961} [2024-11-12 08:22:24,353 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 264 predicate places. [2024-11-12 08:22:24,353 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 961 transitions, 23597 flow [2024-11-12 08:22:24,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:22:24,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:24,353 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:24,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 08:22:24,354 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:22:24,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash -137083480, now seen corresponding path program 5 times [2024-11-12 08:22:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763772683] [2024-11-12 08:22:24,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:24,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763772683] [2024-11-12 08:22:24,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763772683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:22:24,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:22:24,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:22:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529049301] [2024-11-12 08:22:24,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:22:24,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:22:24,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:22:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:22:24,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:22:24,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 961 transitions, 23597 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:22:24,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:24,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:22:24,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:27,577 INFO L124 PetriNetUnfolderBase]: 6465/10049 cut-off events. [2024-11-12 08:22:27,577 INFO L125 PetriNetUnfolderBase]: For 321934/321934 co-relation queries the response was YES. [2024-11-12 08:22:27,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98076 conditions, 10049 events. 6465/10049 cut-off events. For 321934/321934 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 63729 event pairs, 1817 based on Foata normal form. 24/10049 useless extension candidates. Maximal degree in co-relation 97792. Up to 9225 conditions per place. [2024-11-12 08:22:27,710 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 882 selfloop transitions, 110 changer transitions 11/1004 dead transitions. [2024-11-12 08:22:27,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 1004 transitions, 25986 flow [2024-11-12 08:22:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:22:27,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:22:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-11-12 08:22:27,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-11-12 08:22:27,711 INFO L175 Difference]: Start difference. First operand has 292 places, 961 transitions, 23597 flow. Second operand 7 states and 93 transitions. [2024-11-12 08:22:27,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 1004 transitions, 25986 flow [2024-11-12 08:22:31,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1004 transitions, 25737 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-12 08:22:31,037 INFO L231 Difference]: Finished difference. Result has 295 places, 957 transitions, 23507 flow [2024-11-12 08:22:31,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=23325, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=850, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23507, PETRI_PLACES=295, PETRI_TRANSITIONS=957} [2024-11-12 08:22:31,038 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 267 predicate places. [2024-11-12 08:22:31,038 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 957 transitions, 23507 flow [2024-11-12 08:22:31,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-12 08:22:31,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:31,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:22:31,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 08:22:31,038 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:22:31,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1129145018, now seen corresponding path program 14 times [2024-11-12 08:22:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130256646] [2024-11-12 08:22:31,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:31,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:31,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130256646] [2024-11-12 08:22:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130256646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:22:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289888234] [2024-11-12 08:22:31,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:22:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:22:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:22:31,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:22:31,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 08:22:31,179 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:22:31,179 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:22:31,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:22:31,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:22:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:31,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:22:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:31,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289888234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:22:31,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:22:31,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-12 08:22:31,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685410945] [2024-11-12 08:22:31,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:22:31,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:22:31,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:31,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:22:31,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:22:31,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-12 08:22:31,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 957 transitions, 23507 flow. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 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) [2024-11-12 08:22:31,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:31,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-12 08:22:31,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:35,192 INFO L124 PetriNetUnfolderBase]: 6546/10158 cut-off events. [2024-11-12 08:22:35,192 INFO L125 PetriNetUnfolderBase]: For 326583/326583 co-relation queries the response was YES. [2024-11-12 08:22:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99055 conditions, 10158 events. 6546/10158 cut-off events. For 326583/326583 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 64556 event pairs, 1400 based on Foata normal form. 27/10161 useless extension candidates. Maximal degree in co-relation 98766. Up to 7855 conditions per place. [2024-11-12 08:22:35,337 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 756 selfloop transitions, 407 changer transitions 1/1165 dead transitions. [2024-11-12 08:22:35,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1165 transitions, 28734 flow [2024-11-12 08:22:35,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 08:22:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 08:22:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 272 transitions. [2024-11-12 08:22:35,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49454545454545457 [2024-11-12 08:22:35,339 INFO L175 Difference]: Start difference. First operand has 295 places, 957 transitions, 23507 flow. Second operand 22 states and 272 transitions. [2024-11-12 08:22:35,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1165 transitions, 28734 flow