./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:08:04,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:08:04,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:08:04,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:08:04,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:08:04,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:08:04,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:08:04,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:08:04,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:08:04,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:08:04,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:08:04,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:08:04,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:08:04,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:08:04,713 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:08:04,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:08:04,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:08:04,714 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:08:04,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:08:04,714 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:08:04,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:08:04,717 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:08:04,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:08:04,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:08:04,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:08:04,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:08:04,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:08:04,718 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:08:04,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:08:04,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:08:04,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:08:04,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:08:04,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:08:04,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:08:04,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:08:04,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:08:04,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:08:04,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:08:04,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:08:04,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:08:04,720 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:08:04,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:08:04,721 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c [2024-10-11 14:08:04,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:08:04,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:08:04,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:08:04,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:08:04,956 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:08:04,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i [2024-10-11 14:08:06,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:08:06,324 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:08:06,324 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i [2024-10-11 14:08:06,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/acc556e4f/f207f196a2e245deb677b0ab68c03d79/FLAGedd1a5b32 [2024-10-11 14:08:06,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/acc556e4f/f207f196a2e245deb677b0ab68c03d79 [2024-10-11 14:08:06,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:08:06,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:08:06,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:08:06,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:08:06,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:08:06,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5111637b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06, skipping insertion in model container [2024-10-11 14:08:06,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,380 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:08:06,613 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2024-10-11 14:08:06,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:08:06,639 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:08:06,666 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2024-10-11 14:08:06,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:08:06,700 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:08:06,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06 WrapperNode [2024-10-11 14:08:06,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:08:06,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:08:06,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:08:06,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:08:06,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,737 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-10-11 14:08:06,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:08:06,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:08:06,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:08:06,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:08:06,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,766 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:08:06,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:08:06,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:08:06,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:08:06,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:08:06,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (1/1) ... [2024-10-11 14:08:06,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:08:06,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:08:06,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:08:06,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:08:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 14:08:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 14:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 14:08:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 14:08:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:08:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:08:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:08:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:08:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:08:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:08:06,863 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:08:06,972 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:08:06,973 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:08:07,079 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:08:07,080 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:08:07,173 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:08:07,173 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 14:08:07,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:08:07 BoogieIcfgContainer [2024-10-11 14:08:07,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:08:07,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:08:07,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:08:07,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:08:07,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:08:06" (1/3) ... [2024-10-11 14:08:07,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d86d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:08:07, skipping insertion in model container [2024-10-11 14:08:07,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:06" (2/3) ... [2024-10-11 14:08:07,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d86d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:08:07, skipping insertion in model container [2024-10-11 14:08:07,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:08:07" (3/3) ... [2024-10-11 14:08:07,182 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-12.i [2024-10-11 14:08:07,194 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:08:07,196 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:08:07,196 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:08:07,219 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:08:07,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-10-11 14:08:07,271 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-11 14:08:07,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:08:07,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-11 14:08:07,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-10-11 14:08:07,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-10-11 14:08:07,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:08:07,297 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;@48bf1c8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:08:07,297 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:08:07,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:08:07,307 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-10-11 14:08:07,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:08:07,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:08:07,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:08:07,308 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:08:07,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:08:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1327058361, now seen corresponding path program 1 times [2024-10-11 14:08:07,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:08:07,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980256031] [2024-10-11 14:08:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:08:07,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:08:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:08:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:07,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:08:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980256031] [2024-10-11 14:08:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980256031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:08:07,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:08:07,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:08:07,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773766884] [2024-10-11 14:08:07,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:08:07,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:08:07,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:08:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:08:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:08:07,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 14:08:07,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:07,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:08:07,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 14:08:07,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:08:07,698 INFO L124 PetriNetUnfolderBase]: 115/223 cut-off events. [2024-10-11 14:08:07,698 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 14:08:07,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 223 events. 115/223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 691 event pairs, 20 based on Foata normal form. 9/209 useless extension candidates. Maximal degree in co-relation 398. Up to 118 conditions per place. [2024-10-11 14:08:07,701 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 20 selfloop transitions, 2 changer transitions 1/33 dead transitions. [2024-10-11 14:08:07,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 118 flow [2024-10-11 14:08:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:08:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:08:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-11 14:08:07,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2024-10-11 14:08:07,711 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 61 transitions. [2024-10-11 14:08:07,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 118 flow [2024-10-11 14:08:07,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:08:07,714 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-10-11 14:08:07,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-10-11 14:08:07,717 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-10-11 14:08:07,718 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-10-11 14:08:07,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:07,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:08:07,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:08:07,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:08:07,719 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:08:07,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:08:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1785420741, now seen corresponding path program 1 times [2024-10-11 14:08:07,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:08:07,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483621737] [2024-10-11 14:08:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:08:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:08:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:08:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:08:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483621737] [2024-10-11 14:08:07,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483621737] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:08:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713539167] [2024-10-11 14:08:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:08:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:07,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:08:07,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:08:07,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:08:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:08:07,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:08:07,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:08:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:07,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:08:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:07,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713539167] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:08:07,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:08:07,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 14:08:07,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933131539] [2024-10-11 14:08:07,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:08:07,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:08:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:08:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:08:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:08:07,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 14:08:07,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:07,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:08:07,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 14:08:07,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:08:08,060 INFO L124 PetriNetUnfolderBase]: 151/277 cut-off events. [2024-10-11 14:08:08,060 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:08:08,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 277 events. 151/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 799 event pairs, 20 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 569. Up to 91 conditions per place. [2024-10-11 14:08:08,062 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 38 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-10-11 14:08:08,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 212 flow [2024-10-11 14:08:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:08:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:08:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-10-11 14:08:08,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-10-11 14:08:08,066 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 6 states and 118 transitions. [2024-10-11 14:08:08,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 212 flow [2024-10-11 14:08:08,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:08:08,067 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 100 flow [2024-10-11 14:08:08,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-10-11 14:08:08,068 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-10-11 14:08:08,068 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 100 flow [2024-10-11 14:08:08,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:08,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:08:08,071 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:08:08,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:08:08,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:08,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:08:08,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:08:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1099178439, now seen corresponding path program 2 times [2024-10-11 14:08:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:08:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581215019] [2024-10-11 14:08:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:08:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:08:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:08:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:08:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581215019] [2024-10-11 14:08:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581215019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:08:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294751057] [2024-10-11 14:08:08,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:08:08,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:08:08,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:08:08,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:08:08,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:08:08,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:08:08,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:08:08,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:08:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:08,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:08:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294751057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:08:08,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:08:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 14:08:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742877435] [2024-10-11 14:08:08,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:08:08,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:08:08,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:08:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:08:08,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:08:08,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 14:08:08,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 100 flow. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:08,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:08:08,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 14:08:08,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:08:08,720 INFO L124 PetriNetUnfolderBase]: 259/439 cut-off events. [2024-10-11 14:08:08,721 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-10-11 14:08:08,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 439 events. 259/439 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1196 event pairs, 20 based on Foata normal form. 54/479 useless extension candidates. Maximal degree in co-relation 1091. Up to 109 conditions per place. [2024-10-11 14:08:08,726 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 74 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-10-11 14:08:08,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 95 transitions, 426 flow [2024-10-11 14:08:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:08:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:08:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-10-11 14:08:08,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6752873563218391 [2024-10-11 14:08:08,729 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 100 flow. Second operand 12 states and 235 transitions. [2024-10-11 14:08:08,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 95 transitions, 426 flow [2024-10-11 14:08:08,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 95 transitions, 412 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 14:08:08,734 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 170 flow [2024-10-11 14:08:08,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2024-10-11 14:08:08,735 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-10-11 14:08:08,735 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 170 flow [2024-10-11 14:08:08,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:08,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:08:08,736 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:08:08,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:08:08,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:08,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:08:08,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:08:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash -299417337, now seen corresponding path program 3 times [2024-10-11 14:08:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:08:08,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371609288] [2024-10-11 14:08:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:08:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:08:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:08:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:09,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:08:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371609288] [2024-10-11 14:08:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371609288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:08:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386855671] [2024-10-11 14:08:09,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:08:09,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:08:09,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:08:09,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:08:09,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 14:08:09,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:08:09,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 14:08:09,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:08:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:09,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:08:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:09,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386855671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:08:09,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:08:09,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-11 14:08:09,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433632663] [2024-10-11 14:08:09,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:08:09,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 14:08:09,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:08:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 14:08:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-11 14:08:09,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 14:08:09,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 170 flow. Second operand has 25 states, 25 states have (on average 13.28) internal successors, (332), 25 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:09,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:08:09,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 14:08:09,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:08:09,706 INFO L124 PetriNetUnfolderBase]: 475/763 cut-off events. [2024-10-11 14:08:09,706 INFO L125 PetriNetUnfolderBase]: For 4203/4203 co-relation queries the response was YES. [2024-10-11 14:08:09,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 763 events. 475/763 cut-off events. For 4203/4203 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1994 event pairs, 20 based on Foata normal form. 108/857 useless extension candidates. Maximal degree in co-relation 2216. Up to 190 conditions per place. [2024-10-11 14:08:09,711 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 146 selfloop transitions, 23 changer transitions 0/179 dead transitions. [2024-10-11 14:08:09,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 179 transitions, 868 flow [2024-10-11 14:08:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:08:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:08:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 469 transitions. [2024-10-11 14:08:09,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6738505747126436 [2024-10-11 14:08:09,713 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 170 flow. Second operand 24 states and 469 transitions. [2024-10-11 14:08:09,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 179 transitions, 868 flow [2024-10-11 14:08:09,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 179 transitions, 796 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-11 14:08:09,720 INFO L231 Difference]: Finished difference. Result has 83 places, 47 transitions, 290 flow [2024-10-11 14:08:09,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=290, PETRI_PLACES=83, PETRI_TRANSITIONS=47} [2024-10-11 14:08:09,724 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-10-11 14:08:09,724 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 47 transitions, 290 flow [2024-10-11 14:08:09,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.28) internal successors, (332), 25 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:09,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:08:09,724 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:08:09,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 14:08:09,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:09,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:08:09,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:08:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1108070521, now seen corresponding path program 4 times [2024-10-11 14:08:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:08:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159932763] [2024-10-11 14:08:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:08:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:08:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:08:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:10,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:08:10,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159932763] [2024-10-11 14:08:10,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159932763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:08:10,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956234281] [2024-10-11 14:08:10,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:08:10,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:10,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:08:10,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:08:10,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:08:10,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:08:10,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:08:10,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 14:08:10,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:08:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:10,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:08:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:10,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956234281] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:08:10,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:08:10,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 29 [2024-10-11 14:08:10,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599782856] [2024-10-11 14:08:10,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:08:10,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 14:08:10,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:08:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 14:08:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-10-11 14:08:10,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 14:08:10,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 47 transitions, 290 flow. Second operand has 29 states, 29 states have (on average 13.275862068965518) internal successors, (385), 29 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:10,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:08:10,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 14:08:10,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:08:11,037 INFO L124 PetriNetUnfolderBase]: 547/871 cut-off events. [2024-10-11 14:08:11,038 INFO L125 PetriNetUnfolderBase]: For 9333/9333 co-relation queries the response was YES. [2024-10-11 14:08:11,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 871 events. 547/871 cut-off events. For 9333/9333 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2263 event pairs, 20 based on Foata normal form. 36/893 useless extension candidates. Maximal degree in co-relation 2648. Up to 184 conditions per place. [2024-10-11 14:08:11,044 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 170 selfloop transitions, 27 changer transitions 0/207 dead transitions. [2024-10-11 14:08:11,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 207 transitions, 1028 flow [2024-10-11 14:08:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:08:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:08:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 537 transitions. [2024-10-11 14:08:11,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6613300492610837 [2024-10-11 14:08:11,046 INFO L175 Difference]: Start difference. First operand has 83 places, 47 transitions, 290 flow. Second operand 28 states and 537 transitions. [2024-10-11 14:08:11,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 207 transitions, 1028 flow [2024-10-11 14:08:11,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 207 transitions, 924 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-10-11 14:08:11,057 INFO L231 Difference]: Finished difference. Result has 103 places, 51 transitions, 290 flow [2024-10-11 14:08:11,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=290, PETRI_PLACES=103, PETRI_TRANSITIONS=51} [2024-10-11 14:08:11,058 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-10-11 14:08:11,059 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 51 transitions, 290 flow [2024-10-11 14:08:11,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 13.275862068965518) internal successors, (385), 29 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:11,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:08:11,060 INFO L204 CegarLoopForPetriNet]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:08:11,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:08:11,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:11,260 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:08:11,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:08:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash -451870969, now seen corresponding path program 5 times [2024-10-11 14:08:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:08:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869669231] [2024-10-11 14:08:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:08:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:08:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:08:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:08:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869669231] [2024-10-11 14:08:12,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869669231] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:08:12,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076723810] [2024-10-11 14:08:12,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:08:12,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:08:12,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:08:12,815 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:08:12,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:08:12,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-10-11 14:08:12,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:08:12,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-10-11 14:08:12,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:08:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 300 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:14,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:08:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:08:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076723810] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:08:16,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:08:16,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 97 [2024-10-11 14:08:16,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761889533] [2024-10-11 14:08:16,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:08:16,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-10-11 14:08:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:08:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-10-11 14:08:16,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1344, Invalid=8162, Unknown=0, NotChecked=0, Total=9506 [2024-10-11 14:08:16,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-10-11 14:08:16,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 51 transitions, 290 flow. Second operand has 98 states, 98 states have (on average 6.163265306122449) internal successors, (604), 98 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:08:16,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:08:16,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-10-11 14:08:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:05,697 INFO L124 PetriNetUnfolderBase]: 41560/68527 cut-off events. [2024-10-11 14:09:05,698 INFO L125 PetriNetUnfolderBase]: For 263577/263577 co-relation queries the response was YES. [2024-10-11 14:09:05,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184894 conditions, 68527 events. 41560/68527 cut-off events. For 263577/263577 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 480204 event pairs, 106 based on Foata normal form. 0/67947 useless extension candidates. Maximal degree in co-relation 184850. Up to 8745 conditions per place. [2024-10-11 14:09:06,272 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 1018 selfloop transitions, 1691 changer transitions 1229/3941 dead transitions. [2024-10-11 14:09:06,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 3941 transitions, 26079 flow [2024-10-11 14:09:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2024-10-11 14:09:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2024-10-11 14:09:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 4116 transitions. [2024-10-11 14:09:06,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4623160732337414 [2024-10-11 14:09:06,290 INFO L175 Difference]: Start difference. First operand has 103 places, 51 transitions, 290 flow. Second operand 307 states and 4116 transitions. [2024-10-11 14:09:06,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 3941 transitions, 26079 flow [2024-10-11 14:09:06,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 3941 transitions, 22057 flow, removed 754 selfloop flow, removed 23 redundant places. [2024-10-11 14:09:06,612 INFO L231 Difference]: Finished difference. Result has 504 places, 1842 transitions, 11148 flow [2024-10-11 14:09:06,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=307, PETRI_FLOW=11148, PETRI_PLACES=504, PETRI_TRANSITIONS=1842} [2024-10-11 14:09:06,613 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 474 predicate places. [2024-10-11 14:09:06,614 INFO L471 AbstractCegarLoop]: Abstraction has has 504 places, 1842 transitions, 11148 flow [2024-10-11 14:09:06,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 6.163265306122449) internal successors, (604), 98 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:09:06,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:06,615 INFO L204 CegarLoopForPetriNet]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:06,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:09:06,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:06,819 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:06,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:06,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1479360037, now seen corresponding path program 1 times [2024-10-11 14:09:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834610043] [2024-10-11 14:09:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:06,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:08,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834610043] [2024-10-11 14:09:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834610043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:09:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11975333] [2024-10-11 14:09:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:08,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:08,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:08,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:09:08,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:09:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:08,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-10-11 14:09:08,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:09:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 300 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:10,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:09:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:11,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11975333] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:09:11,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:09:11,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 103 [2024-10-11 14:09:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265827673] [2024-10-11 14:09:11,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:09:11,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-10-11 14:09:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-10-11 14:09:11,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=9305, Unknown=0, NotChecked=0, Total=10712 [2024-10-11 14:09:12,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-10-11 14:09:12,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 1842 transitions, 11148 flow. Second operand has 104 states, 104 states have (on average 6.211538461538462) internal successors, (646), 104 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:09:12,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:12,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-10-11 14:09:12,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand