./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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-flipped-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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:42:41,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:42:41,960 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:42:41,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:42:41,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:42:41,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:42:41,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:42:41,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:42:42,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:42:42,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:42:42,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:42:42,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:42:42,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:42:42,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:42:42,006 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:42:42,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:42:42,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:42:42,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:42:42,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:42:42,008 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:42:42,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:42:42,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:42:42,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:42:42,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:42:42,014 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:42:42,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:42:42,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:42:42,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:42:42,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:42:42,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:42:42,015 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:42:42,015 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:42:42,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:42:42,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:42:42,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:42:42,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:42:42,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:42:42,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:42:42,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:42:42,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:42:42,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:42:42,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:42:42,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-11-09 02:42:42,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:42:42,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:42:42,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:42:42,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:42:42,312 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:42:42,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-09 02:42:43,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:42:43,992 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:42:43,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-09 02:42:44,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8ed59521/7763180048cb4a1f9621b30ebffc3717/FLAG3394262fa [2024-11-09 02:42:44,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8ed59521/7763180048cb4a1f9621b30ebffc3717 [2024-11-09 02:42:44,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:42:44,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:42:44,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:42:44,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:42:44,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:42:44,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c13a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44, skipping insertion in model container [2024-11-09 02:42:44,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:42:44,249 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-flipped-dist.wvr.c[2174,2187] [2024-11-09 02:42:44,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:42:44,260 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:42:44,280 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-flipped-dist.wvr.c[2174,2187] [2024-11-09 02:42:44,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:42:44,303 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:42:44,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44 WrapperNode [2024-11-09 02:42:44,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:42:44,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:42:44,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:42:44,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:42:44,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,336 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-09 02:42:44,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:42:44,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:42:44,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:42:44,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:42:44,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,362 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]. [2024-11-09 02:42:44,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:42:44,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:42:44,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:42:44,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:42:44,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (1/1) ... [2024-11-09 02:42:44,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:42:44,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:44,411 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) [2024-11-09 02:42:44,414 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 [2024-11-09 02:42:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:42:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:42:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:42:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:42:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:42:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:42:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:42:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:42:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:42:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:42:44,503 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:42:44,586 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:42:44,588 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:42:44,828 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:42:44,828 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:42:44,974 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:42:44,974 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 02:42:44,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:42:44 BoogieIcfgContainer [2024-11-09 02:42:44,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:42:44,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:42:44,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:42:44,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:42:44,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:42:44" (1/3) ... [2024-11-09 02:42:44,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353515fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:42:44, skipping insertion in model container [2024-11-09 02:42:44,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:44" (2/3) ... [2024-11-09 02:42:44,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353515fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:42:44, skipping insertion in model container [2024-11-09 02:42:44,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:42:44" (3/3) ... [2024-11-09 02:42:44,987 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-11-09 02:42:45,003 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:42:45,004 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:42:45,004 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:42:45,061 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:42:45,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2024-11-09 02:42:45,128 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-09 02:42:45,129 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:42:45,134 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. [2024-11-09 02:42:45,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow [2024-11-09 02:42:45,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 60 flow [2024-11-09 02:42:45,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:42:45,153 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;@7ace2847, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:42:45,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:42:45,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:42:45,162 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-09 02:42:45,162 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:42:45,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:45,166 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:45,166 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)] === [2024-11-09 02:42:45,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1904699272, now seen corresponding path program 1 times [2024-11-09 02:42:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8504316] [2024-11-09 02:42:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8504316] [2024-11-09 02:42:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8504316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:45,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:42:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534410136] [2024-11-09 02:42:45,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:45,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:45,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:45,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:45,917 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) [2024-11-09 02:42:45,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:45,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:45,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:46,108 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-09 02:42:46,109 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-09 02:42:46,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1793 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. [2024-11-09 02:42:46,119 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-09 02:42:46,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-09 02:42:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-09 02:42:46,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 02:42:46,136 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 3 states and 50 transitions. [2024-11-09 02:42:46,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-09 02:42:46,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:42:46,147 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-09 02:42:46,149 INFO L260 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} [2024-11-09 02:42:46,154 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-11-09 02:42:46,155 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-09 02:42:46,155 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) [2024-11-09 02:42:46,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:46,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:46,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:42:46,157 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)] === [2024-11-09 02:42:46,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash -503843282, now seen corresponding path program 1 times [2024-11-09 02:42:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738800377] [2024-11-09 02:42:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:46,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:46,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738800377] [2024-11-09 02:42:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738800377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:46,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:46,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365184796] [2024-11-09 02:42:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:46,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:46,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:46,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:46,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:46,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:46,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:46,540 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-11-09 02:42:46,540 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-11-09 02:42:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2449 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-11-09 02:42:46,546 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-09 02:42:46,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-11-09 02:42:46,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-09 02:42:46,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.568 [2024-11-09 02:42:46,549 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 71 transitions. [2024-11-09 02:42:46,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-11-09 02:42:46,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:46,551 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-11-09 02:42:46,552 INFO L260 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=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-11-09 02:42:46,552 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2024-11-09 02:42:46,553 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-11-09 02:42:46,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:46,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:46,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:46,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:42:46,554 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)] === [2024-11-09 02:42:46,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -759649045, now seen corresponding path program 1 times [2024-11-09 02:42:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134361736] [2024-11-09 02:42:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:46,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134361736] [2024-11-09 02:42:46,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134361736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:46,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:46,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938418476] [2024-11-09 02:42:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:46,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:46,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:46,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:46,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:46,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:46,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:46,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:46,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:46,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:46,881 INFO L124 PetriNetUnfolderBase]: 546/820 cut-off events. [2024-11-09 02:42:46,882 INFO L125 PetriNetUnfolderBase]: For 742/742 co-relation queries the response was YES. [2024-11-09 02:42:46,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 820 events. 546/820 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3117 event pairs, 144 based on Foata normal form. 65/885 useless extension candidates. Maximal degree in co-relation 2002. Up to 373 conditions per place. [2024-11-09 02:42:46,893 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 50 selfloop transitions, 10 changer transitions 5/66 dead transitions. [2024-11-09 02:42:46,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 385 flow [2024-11-09 02:42:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-09 02:42:46,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616 [2024-11-09 02:42:46,897 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 5 states and 77 transitions. [2024-11-09 02:42:46,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 385 flow [2024-11-09 02:42:46,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 373 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-09 02:42:46,906 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 199 flow [2024-11-09 02:42:46,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2024-11-09 02:42:46,909 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-11-09 02:42:46,910 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 199 flow [2024-11-09 02:42:46,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:46,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:46,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:46,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:42:46,911 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)] === [2024-11-09 02:42:46,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1245302808, now seen corresponding path program 2 times [2024-11-09 02:42:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302059328] [2024-11-09 02:42:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:47,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:47,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302059328] [2024-11-09 02:42:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302059328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631086868] [2024-11-09 02:42:47,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:47,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:47,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:47,071 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) [2024-11-09 02:42:47,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:42:47,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:47,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:47,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:42:47,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:47,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:47,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631086868] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:47,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:42:47,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 7 [2024-11-09 02:42:47,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621322345] [2024-11-09 02:42:47,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:47,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:42:47,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:47,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-09 02:42:47,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:47,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:47,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:47,497 INFO L124 PetriNetUnfolderBase]: 608/913 cut-off events. [2024-11-09 02:42:47,497 INFO L125 PetriNetUnfolderBase]: For 2132/2132 co-relation queries the response was YES. [2024-11-09 02:42:47,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 913 events. 608/913 cut-off events. For 2132/2132 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3434 event pairs, 158 based on Foata normal form. 31/944 useless extension candidates. Maximal degree in co-relation 2590. Up to 528 conditions per place. [2024-11-09 02:42:47,504 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 50 selfloop transitions, 7 changer transitions 10/68 dead transitions. [2024-11-09 02:42:47,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 501 flow [2024-11-09 02:42:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-09 02:42:47,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-09 02:42:47,507 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 199 flow. Second operand 4 states and 64 transitions. [2024-11-09 02:42:47,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 501 flow [2024-11-09 02:42:47,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 470 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:47,513 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 223 flow [2024-11-09 02:42:47,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-09 02:42:47,514 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2024-11-09 02:42:47,515 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 223 flow [2024-11-09 02:42:47,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-09 02:42:47,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:47,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:47,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:47,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:47,720 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)] === [2024-11-09 02:42:47,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1991329388, now seen corresponding path program 3 times [2024-11-09 02:42:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:47,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531384217] [2024-11-09 02:42:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:47,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531384217] [2024-11-09 02:42:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531384217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:47,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:47,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268245502] [2024-11-09 02:42:47,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:47,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:47,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:47,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:47,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:47,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:47,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:47,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:48,051 INFO L124 PetriNetUnfolderBase]: 740/1095 cut-off events. [2024-11-09 02:42:48,051 INFO L125 PetriNetUnfolderBase]: For 3045/3045 co-relation queries the response was YES. [2024-11-09 02:42:48,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4334 conditions, 1095 events. 740/1095 cut-off events. For 3045/3045 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4264 event pairs, 271 based on Foata normal form. 16/1111 useless extension candidates. Maximal degree in co-relation 3017. Up to 795 conditions per place. [2024-11-09 02:42:48,060 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 50 selfloop transitions, 18 changer transitions 3/72 dead transitions. [2024-11-09 02:42:48,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 570 flow [2024-11-09 02:42:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-11-09 02:42:48,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-09 02:42:48,062 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 223 flow. Second operand 5 states and 70 transitions. [2024-11-09 02:42:48,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 570 flow [2024-11-09 02:42:48,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 553 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:48,073 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 368 flow [2024-11-09 02:42:48,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2024-11-09 02:42:48,074 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2024-11-09 02:42:48,076 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 368 flow [2024-11-09 02:42:48,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:48,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:48,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:48,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:42:48,077 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)] === [2024-11-09 02:42:48,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1347955026, now seen corresponding path program 4 times [2024-11-09 02:42:48,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:48,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078897383] [2024-11-09 02:42:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:48,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:48,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:48,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078897383] [2024-11-09 02:42:48,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078897383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:48,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:48,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:48,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287769487] [2024-11-09 02:42:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:48,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:48,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:48,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:48,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:48,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:48,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:48,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:48,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:48,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:48,430 INFO L124 PetriNetUnfolderBase]: 745/1083 cut-off events. [2024-11-09 02:42:48,430 INFO L125 PetriNetUnfolderBase]: For 4000/4000 co-relation queries the response was YES. [2024-11-09 02:42:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 1083 events. 745/1083 cut-off events. For 4000/4000 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4123 event pairs, 108 based on Foata normal form. 84/1167 useless extension candidates. Maximal degree in co-relation 3910. Up to 514 conditions per place. [2024-11-09 02:42:48,440 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 62 selfloop transitions, 23 changer transitions 14/100 dead transitions. [2024-11-09 02:42:48,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 100 transitions, 880 flow [2024-11-09 02:42:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-11-09 02:42:48,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6057142857142858 [2024-11-09 02:42:48,442 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 368 flow. Second operand 7 states and 106 transitions. [2024-11-09 02:42:48,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 100 transitions, 880 flow [2024-11-09 02:42:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 100 transitions, 850 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-09 02:42:48,453 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 463 flow [2024-11-09 02:42:48,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-11-09 02:42:48,454 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-11-09 02:42:48,454 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 463 flow [2024-11-09 02:42:48,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:48,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:48,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:48,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:42:48,455 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)] === [2024-11-09 02:42:48,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash -283694, now seen corresponding path program 5 times [2024-11-09 02:42:48,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:48,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99391696] [2024-11-09 02:42:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:48,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:48,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:48,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99391696] [2024-11-09 02:42:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99391696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:48,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:48,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970093082] [2024-11-09 02:42:48,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:48,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:48,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:48,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:48,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:48,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:48,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:48,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:48,740 INFO L124 PetriNetUnfolderBase]: 628/931 cut-off events. [2024-11-09 02:42:48,740 INFO L125 PetriNetUnfolderBase]: For 5346/5346 co-relation queries the response was YES. [2024-11-09 02:42:48,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 931 events. 628/931 cut-off events. For 5346/5346 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3473 event pairs, 154 based on Foata normal form. 42/973 useless extension candidates. Maximal degree in co-relation 4321. Up to 535 conditions per place. [2024-11-09 02:42:48,751 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 55 selfloop transitions, 14 changer transitions 11/81 dead transitions. [2024-11-09 02:42:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 788 flow [2024-11-09 02:42:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-09 02:42:48,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576 [2024-11-09 02:42:48,753 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 463 flow. Second operand 5 states and 72 transitions. [2024-11-09 02:42:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 788 flow [2024-11-09 02:42:48,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 740 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:48,770 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 482 flow [2024-11-09 02:42:48,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-11-09 02:42:48,771 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-11-09 02:42:48,772 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 482 flow [2024-11-09 02:42:48,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:48,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:48,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:48,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:42:48,772 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)] === [2024-11-09 02:42:48,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1526833160, now seen corresponding path program 6 times [2024-11-09 02:42:48,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:48,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378570437] [2024-11-09 02:42:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:48,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:48,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378570437] [2024-11-09 02:42:48,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378570437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:48,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:48,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152259552] [2024-11-09 02:42:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:48,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:48,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:48,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 482 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:48,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:48,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:48,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:49,047 INFO L124 PetriNetUnfolderBase]: 659/974 cut-off events. [2024-11-09 02:42:49,047 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2024-11-09 02:42:49,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 974 events. 659/974 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3561 event pairs, 244 based on Foata normal form. 16/990 useless extension candidates. Maximal degree in co-relation 4774. Up to 712 conditions per place. [2024-11-09 02:42:49,056 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 52 selfloop transitions, 22 changer transitions 4/79 dead transitions. [2024-11-09 02:42:49,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 878 flow [2024-11-09 02:42:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-09 02:42:49,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512 [2024-11-09 02:42:49,058 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 482 flow. Second operand 5 states and 64 transitions. [2024-11-09 02:42:49,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 878 flow [2024-11-09 02:42:49,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 825 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:49,073 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 626 flow [2024-11-09 02:42:49,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-11-09 02:42:49,075 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2024-11-09 02:42:49,077 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 626 flow [2024-11-09 02:42:49,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:49,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:49,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:49,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:42:49,078 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)] === [2024-11-09 02:42:49,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash 170162636, now seen corresponding path program 7 times [2024-11-09 02:42:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:49,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054546475] [2024-11-09 02:42:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054546475] [2024-11-09 02:42:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054546475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:49,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819279984] [2024-11-09 02:42:49,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:42:49,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:49,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:49,181 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) [2024-11-09 02:42:49,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:42:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:49,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:42:49,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:49,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:49,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819279984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:49,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 02:42:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897085371] [2024-11-09 02:42:49,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:49,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:42:49,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:49,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:42:49,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:42:49,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:49,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 626 flow. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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) [2024-11-09 02:42:49,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:49,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:49,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:49,917 INFO L124 PetriNetUnfolderBase]: 946/1383 cut-off events. [2024-11-09 02:42:49,917 INFO L125 PetriNetUnfolderBase]: For 9497/9497 co-relation queries the response was YES. [2024-11-09 02:42:49,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 1383 events. 946/1383 cut-off events. For 9497/9497 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5387 event pairs, 181 based on Foata normal form. 74/1457 useless extension candidates. Maximal degree in co-relation 7155. Up to 630 conditions per place. [2024-11-09 02:42:49,932 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 76 selfloop transitions, 74 changer transitions 2/153 dead transitions. [2024-11-09 02:42:49,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 153 transitions, 1768 flow [2024-11-09 02:42:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:42:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:42:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-11-09 02:42:49,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-09 02:42:49,934 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 626 flow. Second operand 12 states and 152 transitions. [2024-11-09 02:42:49,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 153 transitions, 1768 flow [2024-11-09 02:42:49,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 153 transitions, 1708 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:49,957 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 1419 flow [2024-11-09 02:42:49,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1419, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2024-11-09 02:42:49,958 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2024-11-09 02:42:49,958 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 1419 flow [2024-11-09 02:42:49,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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) [2024-11-09 02:42:49,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:49,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:49,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:42:50,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 02:42:50,160 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)] === [2024-11-09 02:42:50,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1689842512, now seen corresponding path program 8 times [2024-11-09 02:42:50,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:50,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311872705] [2024-11-09 02:42:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311872705] [2024-11-09 02:42:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311872705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:50,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376102245] [2024-11-09 02:42:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:50,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:50,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:50,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 1419 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:50,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:50,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:50,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:50,514 INFO L124 PetriNetUnfolderBase]: 933/1376 cut-off events. [2024-11-09 02:42:50,514 INFO L125 PetriNetUnfolderBase]: For 14867/14867 co-relation queries the response was YES. [2024-11-09 02:42:50,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9364 conditions, 1376 events. 933/1376 cut-off events. For 14867/14867 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5354 event pairs, 273 based on Foata normal form. 22/1398 useless extension candidates. Maximal degree in co-relation 8850. Up to 900 conditions per place. [2024-11-09 02:42:50,532 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 86 selfloop transitions, 22 changer transitions 12/121 dead transitions. [2024-11-09 02:42:50,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 1832 flow [2024-11-09 02:42:50,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-11-09 02:42:50,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.488 [2024-11-09 02:42:50,534 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 1419 flow. Second operand 5 states and 61 transitions. [2024-11-09 02:42:50,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 1832 flow [2024-11-09 02:42:50,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 121 transitions, 1675 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:50,576 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 1316 flow [2024-11-09 02:42:50,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1316, PETRI_PLACES=78, PETRI_TRANSITIONS=100} [2024-11-09 02:42:50,579 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 50 predicate places. [2024-11-09 02:42:50,580 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 1316 flow [2024-11-09 02:42:50,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-09 02:42:50,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:50,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:50,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:42:50,582 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)] === [2024-11-09 02:42:50,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash 656042620, now seen corresponding path program 1 times [2024-11-09 02:42:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237256903] [2024-11-09 02:42:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:50,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237256903] [2024-11-09 02:42:50,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237256903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750897400] [2024-11-09 02:42:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:50,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:50,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:50,687 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) [2024-11-09 02:42:50,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:42:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:50,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:50,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:50,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750897400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:50,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 02:42:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421242680] [2024-11-09 02:42:50,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:50,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:42:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:50,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:42:50,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:42:50,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:50,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 100 transitions, 1316 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:50,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:50,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:50,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:51,102 INFO L124 PetriNetUnfolderBase]: 966/1386 cut-off events. [2024-11-09 02:42:51,102 INFO L125 PetriNetUnfolderBase]: For 14261/14261 co-relation queries the response was YES. [2024-11-09 02:42:51,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9287 conditions, 1386 events. 966/1386 cut-off events. For 14261/14261 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5221 event pairs, 221 based on Foata normal form. 38/1424 useless extension candidates. Maximal degree in co-relation 8661. Up to 844 conditions per place. [2024-11-09 02:42:51,119 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 84 selfloop transitions, 59 changer transitions 1/145 dead transitions. [2024-11-09 02:42:51,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 145 transitions, 2115 flow [2024-11-09 02:42:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:42:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:42:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-11-09 02:42:51,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-09 02:42:51,120 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 1316 flow. Second operand 6 states and 81 transitions. [2024-11-09 02:42:51,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 145 transitions, 2115 flow [2024-11-09 02:42:51,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 2017 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:51,152 INFO L231 Difference]: Finished difference. Result has 79 places, 115 transitions, 1641 flow [2024-11-09 02:42:51,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1641, PETRI_PLACES=79, PETRI_TRANSITIONS=115} [2024-11-09 02:42:51,153 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2024-11-09 02:42:51,153 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 115 transitions, 1641 flow [2024-11-09 02:42:51,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:51,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:51,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:51,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:42:51,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:51,354 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)] === [2024-11-09 02:42:51,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1284548617, now seen corresponding path program 1 times [2024-11-09 02:42:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:51,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922377204] [2024-11-09 02:42:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:51,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922377204] [2024-11-09 02:42:51,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922377204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048219680] [2024-11-09 02:42:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:51,564 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) [2024-11-09 02:42:51,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:42:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:51,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:42:51,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:51,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048219680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:52,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-09 02:42:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545873837] [2024-11-09 02:42:52,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:52,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:52,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:52,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 115 transitions, 1641 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:52,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:52,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:52,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:52,867 INFO L124 PetriNetUnfolderBase]: 1456/2098 cut-off events. [2024-11-09 02:42:52,867 INFO L125 PetriNetUnfolderBase]: For 21876/21876 co-relation queries the response was YES. [2024-11-09 02:42:52,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14263 conditions, 2098 events. 1456/2098 cut-off events. For 21876/21876 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8416 event pairs, 154 based on Foata normal form. 2/2100 useless extension candidates. Maximal degree in co-relation 13553. Up to 1478 conditions per place. [2024-11-09 02:42:52,889 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 142 selfloop transitions, 61 changer transitions 2/206 dead transitions. [2024-11-09 02:42:52,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 206 transitions, 2909 flow [2024-11-09 02:42:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:42:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:42:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-11-09 02:42:52,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5955555555555555 [2024-11-09 02:42:52,891 INFO L175 Difference]: Start difference. First operand has 79 places, 115 transitions, 1641 flow. Second operand 9 states and 134 transitions. [2024-11-09 02:42:52,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 206 transitions, 2909 flow [2024-11-09 02:42:52,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 206 transitions, 2685 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:52,948 INFO L231 Difference]: Finished difference. Result has 86 places, 152 transitions, 2226 flow [2024-11-09 02:42:52,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2226, PETRI_PLACES=86, PETRI_TRANSITIONS=152} [2024-11-09 02:42:52,949 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 58 predicate places. [2024-11-09 02:42:52,950 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 152 transitions, 2226 flow [2024-11-09 02:42:52,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:52,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:52,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:52,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:53,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:53,151 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)] === [2024-11-09 02:42:53,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1077805155, now seen corresponding path program 2 times [2024-11-09 02:42:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:53,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170976182] [2024-11-09 02:42:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:53,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170976182] [2024-11-09 02:42:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170976182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943942211] [2024-11-09 02:42:53,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:53,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:53,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:53,343 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) [2024-11-09 02:42:53,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:42:53,413 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:53,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:53,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:42:53,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:53,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:54,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943942211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:54,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:54,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-09 02:42:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101973527] [2024-11-09 02:42:54,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:54,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:54,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:54,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 152 transitions, 2226 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:54,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:54,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:54,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:54,732 INFO L124 PetriNetUnfolderBase]: 1800/2598 cut-off events. [2024-11-09 02:42:54,732 INFO L125 PetriNetUnfolderBase]: For 31344/31344 co-relation queries the response was YES. [2024-11-09 02:42:54,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18344 conditions, 2598 events. 1800/2598 cut-off events. For 31344/31344 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10843 event pairs, 283 based on Foata normal form. 2/2600 useless extension candidates. Maximal degree in co-relation 17567. Up to 1967 conditions per place. [2024-11-09 02:42:54,769 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 158 selfloop transitions, 63 changer transitions 2/224 dead transitions. [2024-11-09 02:42:54,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 224 transitions, 3342 flow [2024-11-09 02:42:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:42:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:42:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-11-09 02:42:54,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2024-11-09 02:42:54,771 INFO L175 Difference]: Start difference. First operand has 86 places, 152 transitions, 2226 flow. Second operand 9 states and 131 transitions. [2024-11-09 02:42:54,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 224 transitions, 3342 flow [2024-11-09 02:42:54,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 224 transitions, 3104 flow, removed 100 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:54,873 INFO L231 Difference]: Finished difference. Result has 95 places, 173 transitions, 2547 flow [2024-11-09 02:42:54,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2547, PETRI_PLACES=95, PETRI_TRANSITIONS=173} [2024-11-09 02:42:54,875 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 67 predicate places. [2024-11-09 02:42:54,875 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 173 transitions, 2547 flow [2024-11-09 02:42:54,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:54,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:54,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:54,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:42:55,076 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,SelfDestructingSolverStorable12 [2024-11-09 02:42:55,077 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)] === [2024-11-09 02:42:55,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1100252289, now seen corresponding path program 3 times [2024-11-09 02:42:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:55,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320847512] [2024-11-09 02:42:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:55,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:55,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:55,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320847512] [2024-11-09 02:42:55,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320847512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:55,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455322685] [2024-11-09 02:42:55,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:55,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:55,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:55,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:42:55,366 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:42:55,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:55,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:42:55,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:55,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:56,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455322685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:56,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:56,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-09 02:42:56,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243161483] [2024-11-09 02:42:56,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:56,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:56,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:56,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 173 transitions, 2547 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:56,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:56,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:56,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:56,826 INFO L124 PetriNetUnfolderBase]: 2212/3198 cut-off events. [2024-11-09 02:42:56,827 INFO L125 PetriNetUnfolderBase]: For 38196/38196 co-relation queries the response was YES. [2024-11-09 02:42:56,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22263 conditions, 3198 events. 2212/3198 cut-off events. For 38196/38196 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13896 event pairs, 450 based on Foata normal form. 2/3200 useless extension candidates. Maximal degree in co-relation 21635. Up to 2670 conditions per place. [2024-11-09 02:42:56,916 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 198 selfloop transitions, 57 changer transitions 2/258 dead transitions. [2024-11-09 02:42:56,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 258 transitions, 3926 flow [2024-11-09 02:42:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:42:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:42:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-11-09 02:42:56,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2024-11-09 02:42:56,918 INFO L175 Difference]: Start difference. First operand has 95 places, 173 transitions, 2547 flow. Second operand 9 states and 131 transitions. [2024-11-09 02:42:56,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 258 transitions, 3926 flow [2024-11-09 02:42:57,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 258 transitions, 3723 flow, removed 76 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:57,030 INFO L231 Difference]: Finished difference. Result has 105 places, 206 transitions, 3104 flow [2024-11-09 02:42:57,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3104, PETRI_PLACES=105, PETRI_TRANSITIONS=206} [2024-11-09 02:42:57,031 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2024-11-09 02:42:57,031 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 206 transitions, 3104 flow [2024-11-09 02:42:57,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:57,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:57,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:57,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:42:57,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:57,236 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)] === [2024-11-09 02:42:57,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash -596321151, now seen corresponding path program 4 times [2024-11-09 02:42:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:57,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910600391] [2024-11-09 02:42:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910600391] [2024-11-09 02:42:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910600391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284029262] [2024-11-09 02:42:57,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:57,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:57,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:57,440 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) [2024-11-09 02:42:57,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:42:57,509 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:57,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:57,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:42:57,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:57,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:58,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284029262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:58,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:58,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-09 02:42:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859721098] [2024-11-09 02:42:58,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:58,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:58,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:42:58,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 206 transitions, 3104 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:58,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:58,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:42:58,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:58,940 INFO L124 PetriNetUnfolderBase]: 2452/3550 cut-off events. [2024-11-09 02:42:58,940 INFO L125 PetriNetUnfolderBase]: For 44125/44125 co-relation queries the response was YES. [2024-11-09 02:42:58,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25090 conditions, 3550 events. 2452/3550 cut-off events. For 44125/44125 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15744 event pairs, 550 based on Foata normal form. 2/3552 useless extension candidates. Maximal degree in co-relation 24454. Up to 3104 conditions per place. [2024-11-09 02:42:58,992 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 213 selfloop transitions, 53 changer transitions 2/269 dead transitions. [2024-11-09 02:42:58,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 269 transitions, 4295 flow [2024-11-09 02:42:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:42:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:42:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-11-09 02:42:58,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2024-11-09 02:42:58,994 INFO L175 Difference]: Start difference. First operand has 105 places, 206 transitions, 3104 flow. Second operand 9 states and 127 transitions. [2024-11-09 02:42:58,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 269 transitions, 4295 flow [2024-11-09 02:42:59,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 269 transitions, 4029 flow, removed 121 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:59,126 INFO L231 Difference]: Finished difference. Result has 115 places, 221 transitions, 3310 flow [2024-11-09 02:42:59,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3310, PETRI_PLACES=115, PETRI_TRANSITIONS=221} [2024-11-09 02:42:59,127 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 87 predicate places. [2024-11-09 02:42:59,127 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 221 transitions, 3310 flow [2024-11-09 02:42:59,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:42:59,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:59,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:59,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:42:59,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:59,329 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)] === [2024-11-09 02:42:59,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1361636989, now seen corresponding path program 5 times [2024-11-09 02:42:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:59,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599458357] [2024-11-09 02:42:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:59,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599458357] [2024-11-09 02:42:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599458357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230112005] [2024-11-09 02:42:59,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:59,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:59,486 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) [2024-11-09 02:42:59,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:42:59,548 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:59,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:59,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:42:59,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:59,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:00,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230112005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:00,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:00,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-09 02:43:00,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276656579] [2024-11-09 02:43:00,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:00,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:43:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:43:00,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:43:00,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:00,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 221 transitions, 3310 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:43:00,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:00,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:00,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:01,677 INFO L124 PetriNetUnfolderBase]: 2826/4089 cut-off events. [2024-11-09 02:43:01,677 INFO L125 PetriNetUnfolderBase]: For 52925/52925 co-relation queries the response was YES. [2024-11-09 02:43:01,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29089 conditions, 4089 events. 2826/4089 cut-off events. For 52925/52925 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18742 event pairs, 677 based on Foata normal form. 1/4090 useless extension candidates. Maximal degree in co-relation 28409. Up to 3611 conditions per place. [2024-11-09 02:43:01,746 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 235 selfloop transitions, 57 changer transitions 1/294 dead transitions. [2024-11-09 02:43:01,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 294 transitions, 4825 flow [2024-11-09 02:43:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:43:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:43:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-11-09 02:43:01,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-09 02:43:01,748 INFO L175 Difference]: Start difference. First operand has 115 places, 221 transitions, 3310 flow. Second operand 8 states and 111 transitions. [2024-11-09 02:43:01,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 294 transitions, 4825 flow [2024-11-09 02:43:01,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 294 transitions, 4599 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-11-09 02:43:01,907 INFO L231 Difference]: Finished difference. Result has 123 places, 254 transitions, 3916 flow [2024-11-09 02:43:01,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3916, PETRI_PLACES=123, PETRI_TRANSITIONS=254} [2024-11-09 02:43:01,908 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 95 predicate places. [2024-11-09 02:43:01,910 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 254 transitions, 3916 flow [2024-11-09 02:43:01,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:43:01,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:01,910 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:01,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 02:43:02,110 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,SelfDestructingSolverStorable15 [2024-11-09 02:43:02,111 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)] === [2024-11-09 02:43:02,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1580693891, now seen corresponding path program 6 times [2024-11-09 02:43:02,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:02,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225467947] [2024-11-09 02:43:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225467947] [2024-11-09 02:43:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225467947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021673939] [2024-11-09 02:43:02,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:43:02,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:02,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:02,287 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) [2024-11-09 02:43:02,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:43:02,356 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:43:02,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:02,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 02:43:02,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:02,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021673939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:03,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:03,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-09 02:43:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921682916] [2024-11-09 02:43:03,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:03,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:43:03,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:43:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:43:03,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:03,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 254 transitions, 3916 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:43:03,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:03,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:03,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:04,597 INFO L124 PetriNetUnfolderBase]: 3016/4368 cut-off events. [2024-11-09 02:43:04,597 INFO L125 PetriNetUnfolderBase]: For 57490/57490 co-relation queries the response was YES. [2024-11-09 02:43:04,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31532 conditions, 4368 events. 3016/4368 cut-off events. For 57490/57490 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20352 event pairs, 764 based on Foata normal form. 1/4369 useless extension candidates. Maximal degree in co-relation 30843. Up to 3994 conditions per place. [2024-11-09 02:43:04,653 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 252 selfloop transitions, 51 changer transitions 1/305 dead transitions. [2024-11-09 02:43:04,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 305 transitions, 5146 flow [2024-11-09 02:43:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:43:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:43:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-11-09 02:43:04,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 02:43:04,655 INFO L175 Difference]: Start difference. First operand has 123 places, 254 transitions, 3916 flow. Second operand 8 states and 110 transitions. [2024-11-09 02:43:04,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 305 transitions, 5146 flow [2024-11-09 02:43:04,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 305 transitions, 4858 flow, removed 132 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:04,839 INFO L231 Difference]: Finished difference. Result has 131 places, 266 transitions, 4071 flow [2024-11-09 02:43:04,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3628, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4071, PETRI_PLACES=131, PETRI_TRANSITIONS=266} [2024-11-09 02:43:04,841 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 103 predicate places. [2024-11-09 02:43:04,841 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 266 transitions, 4071 flow [2024-11-09 02:43:04,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2024-11-09 02:43:04,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:04,841 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:04,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 02:43:05,045 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,SelfDestructingSolverStorable16 [2024-11-09 02:43:05,046 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)] === [2024-11-09 02:43:05,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:05,046 INFO L85 PathProgramCache]: Analyzing trace with hash 359350719, now seen corresponding path program 7 times [2024-11-09 02:43:05,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:05,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087266634] [2024-11-09 02:43:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:05,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087266634] [2024-11-09 02:43:05,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087266634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895661381] [2024-11-09 02:43:05,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:43:05,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:05,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:05,182 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) [2024-11-09 02:43:05,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:43:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:05,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:43:05,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:05,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895661381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:05,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:05,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:43:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220959941] [2024-11-09 02:43:05,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:05,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:43:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:43:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:43:05,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:05,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 266 transitions, 4071 flow. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 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) [2024-11-09 02:43:05,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:05,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:05,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:06,748 INFO L124 PetriNetUnfolderBase]: 4837/6868 cut-off events. [2024-11-09 02:43:06,748 INFO L125 PetriNetUnfolderBase]: For 102220/102220 co-relation queries the response was YES. [2024-11-09 02:43:06,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49378 conditions, 6868 events. 4837/6868 cut-off events. For 102220/102220 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32863 event pairs, 455 based on Foata normal form. 48/6916 useless extension candidates. Maximal degree in co-relation 47960. Up to 2266 conditions per place. [2024-11-09 02:43:06,820 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 537 selfloop transitions, 134 changer transitions 0/672 dead transitions. [2024-11-09 02:43:06,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 672 transitions, 11632 flow [2024-11-09 02:43:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:43:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:43:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 191 transitions. [2024-11-09 02:43:06,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5876923076923077 [2024-11-09 02:43:06,823 INFO L175 Difference]: Start difference. First operand has 131 places, 266 transitions, 4071 flow. Second operand 13 states and 191 transitions. [2024-11-09 02:43:06,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 672 transitions, 11632 flow [2024-11-09 02:43:07,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 672 transitions, 10856 flow, removed 364 selfloop flow, removed 2 redundant places. [2024-11-09 02:43:07,081 INFO L231 Difference]: Finished difference. Result has 149 places, 344 transitions, 5467 flow [2024-11-09 02:43:07,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5467, PETRI_PLACES=149, PETRI_TRANSITIONS=344} [2024-11-09 02:43:07,081 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-11-09 02:43:07,081 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 344 transitions, 5467 flow [2024-11-09 02:43:07,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 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) [2024-11-09 02:43:07,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:07,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:07,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 02:43:07,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 02:43:07,282 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)] === [2024-11-09 02:43:07,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1096849246, now seen corresponding path program 8 times [2024-11-09 02:43:07,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:07,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913159545] [2024-11-09 02:43:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:07,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:07,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:07,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913159545] [2024-11-09 02:43:07,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913159545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:07,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420051396] [2024-11-09 02:43:07,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:43:07,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:07,588 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) [2024-11-09 02:43:07,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:43:07,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:07,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:07,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:43:07,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:07,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420051396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:07,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 02:43:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900624573] [2024-11-09 02:43:07,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:07,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:43:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:43:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:43:07,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:07,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 344 transitions, 5467 flow. Second operand has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:07,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:07,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:07,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:10,762 INFO L124 PetriNetUnfolderBase]: 6514/9210 cut-off events. [2024-11-09 02:43:10,762 INFO L125 PetriNetUnfolderBase]: For 147319/147319 co-relation queries the response was YES. [2024-11-09 02:43:10,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74556 conditions, 9210 events. 6514/9210 cut-off events. For 147319/147319 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 45566 event pairs, 356 based on Foata normal form. 142/9352 useless extension candidates. Maximal degree in co-relation 72094. Up to 3544 conditions per place. [2024-11-09 02:43:10,940 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 604 selfloop transitions, 492 changer transitions 0/1097 dead transitions. [2024-11-09 02:43:10,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 1097 transitions, 19039 flow [2024-11-09 02:43:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-09 02:43:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-09 02:43:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 623 transitions. [2024-11-09 02:43:10,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4530909090909091 [2024-11-09 02:43:10,949 INFO L175 Difference]: Start difference. First operand has 149 places, 344 transitions, 5467 flow. Second operand 55 states and 623 transitions. [2024-11-09 02:43:10,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 1097 transitions, 19039 flow [2024-11-09 02:43:11,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1097 transitions, 18329 flow, removed 302 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:11,579 INFO L231 Difference]: Finished difference. Result has 227 places, 676 transitions, 12507 flow [2024-11-09 02:43:11,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=5169, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=12507, PETRI_PLACES=227, PETRI_TRANSITIONS=676} [2024-11-09 02:43:11,580 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 199 predicate places. [2024-11-09 02:43:11,580 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 676 transitions, 12507 flow [2024-11-09 02:43:11,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:11,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:11,581 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:11,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 02:43:11,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:11,781 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)] === [2024-11-09 02:43:11,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:11,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2007530679, now seen corresponding path program 9 times [2024-11-09 02:43:11,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:11,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437111430] [2024-11-09 02:43:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:11,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437111430] [2024-11-09 02:43:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437111430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119728489] [2024-11-09 02:43:11,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:43:11,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:11,923 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) [2024-11-09 02:43:11,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:43:11,989 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:43:11,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:11,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:43:11,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:12,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119728489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:12,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:12,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-09 02:43:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506047942] [2024-11-09 02:43:12,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:12,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:43:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:43:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:43:12,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:12,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 676 transitions, 12507 flow. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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) [2024-11-09 02:43:12,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:12,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:12,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:14,787 INFO L124 PetriNetUnfolderBase]: 6754/9618 cut-off events. [2024-11-09 02:43:14,788 INFO L125 PetriNetUnfolderBase]: For 315483/315483 co-relation queries the response was YES. [2024-11-09 02:43:14,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92087 conditions, 9618 events. 6754/9618 cut-off events. For 315483/315483 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48827 event pairs, 1413 based on Foata normal form. 112/9730 useless extension candidates. Maximal degree in co-relation 91440. Up to 4680 conditions per place. [2024-11-09 02:43:14,909 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 517 selfloop transitions, 351 changer transitions 6/875 dead transitions. [2024-11-09 02:43:14,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 875 transitions, 17480 flow [2024-11-09 02:43:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:43:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:43:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 186 transitions. [2024-11-09 02:43:14,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.496 [2024-11-09 02:43:14,912 INFO L175 Difference]: Start difference. First operand has 227 places, 676 transitions, 12507 flow. Second operand 15 states and 186 transitions. [2024-11-09 02:43:14,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 875 transitions, 17480 flow [2024-11-09 02:43:16,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 875 transitions, 14786 flow, removed 1124 selfloop flow, removed 4 redundant places. [2024-11-09 02:43:16,732 INFO L231 Difference]: Finished difference. Result has 243 places, 737 transitions, 12117 flow [2024-11-09 02:43:16,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=9902, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12117, PETRI_PLACES=243, PETRI_TRANSITIONS=737} [2024-11-09 02:43:16,733 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 215 predicate places. [2024-11-09 02:43:16,733 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 737 transitions, 12117 flow [2024-11-09 02:43:16,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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) [2024-11-09 02:43:16,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:16,734 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:16,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 02:43:16,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:16,934 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)] === [2024-11-09 02:43:16,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash -876956959, now seen corresponding path program 10 times [2024-11-09 02:43:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370784331] [2024-11-09 02:43:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:17,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:17,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370784331] [2024-11-09 02:43:17,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370784331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198028449] [2024-11-09 02:43:17,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:43:17,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:17,060 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) [2024-11-09 02:43:17,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:43:17,123 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:43:17,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:17,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:43:17,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:17,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198028449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:17,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:17,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:43:17,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893641516] [2024-11-09 02:43:17,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:17,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:43:17,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:17,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:43:17,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:43:17,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:17,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 737 transitions, 12117 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-11-09 02:43:17,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:17,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:17,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:19,991 INFO L124 PetriNetUnfolderBase]: 7092/10202 cut-off events. [2024-11-09 02:43:19,991 INFO L125 PetriNetUnfolderBase]: For 431539/431539 co-relation queries the response was YES. [2024-11-09 02:43:20,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96635 conditions, 10202 events. 7092/10202 cut-off events. For 431539/431539 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 53564 event pairs, 1739 based on Foata normal form. 172/10372 useless extension candidates. Maximal degree in co-relation 96160. Up to 5947 conditions per place. [2024-11-09 02:43:20,114 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 663 selfloop transitions, 250 changer transitions 39/953 dead transitions. [2024-11-09 02:43:20,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 953 transitions, 17950 flow [2024-11-09 02:43:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:43:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:43:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-11-09 02:43:20,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-09 02:43:20,115 INFO L175 Difference]: Start difference. First operand has 243 places, 737 transitions, 12117 flow. Second operand 8 states and 115 transitions. [2024-11-09 02:43:20,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 953 transitions, 17950 flow [2024-11-09 02:43:22,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 953 transitions, 17010 flow, removed 351 selfloop flow, removed 3 redundant places. [2024-11-09 02:43:22,787 INFO L231 Difference]: Finished difference. Result has 251 places, 796 transitions, 13543 flow [2024-11-09 02:43:22,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11571, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13543, PETRI_PLACES=251, PETRI_TRANSITIONS=796} [2024-11-09 02:43:22,788 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 223 predicate places. [2024-11-09 02:43:22,788 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 796 transitions, 13543 flow [2024-11-09 02:43:22,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-11-09 02:43:22,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:22,789 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:22,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:22,989 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,SelfDestructingSolverStorable20 [2024-11-09 02:43:22,989 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)] === [2024-11-09 02:43:22,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1126252283, now seen corresponding path program 11 times [2024-11-09 02:43:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:22,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246602912] [2024-11-09 02:43:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:22,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246602912] [2024-11-09 02:43:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246602912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102898724] [2024-11-09 02:43:23,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:43:23,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:23,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:23,134 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) [2024-11-09 02:43:23,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:43:23,182 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:43:23,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:23,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:43:23,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:23,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102898724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:23,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-09 02:43:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977761341] [2024-11-09 02:43:23,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:23,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:43:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:23,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:43:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:43:23,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:23,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 796 transitions, 13543 flow. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2024-11-09 02:43:23,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:23,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:23,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:26,813 INFO L124 PetriNetUnfolderBase]: 8223/11640 cut-off events. [2024-11-09 02:43:26,814 INFO L125 PetriNetUnfolderBase]: For 533005/533005 co-relation queries the response was YES. [2024-11-09 02:43:26,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118361 conditions, 11640 events. 8223/11640 cut-off events. For 533005/533005 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 60508 event pairs, 1467 based on Foata normal form. 86/11724 useless extension candidates. Maximal degree in co-relation 117907. Up to 6709 conditions per place. [2024-11-09 02:43:26,989 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 636 selfloop transitions, 656 changer transitions 0/1293 dead transitions. [2024-11-09 02:43:26,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1293 transitions, 26487 flow [2024-11-09 02:43:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 02:43:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-09 02:43:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 373 transitions. [2024-11-09 02:43:26,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46625 [2024-11-09 02:43:26,991 INFO L175 Difference]: Start difference. First operand has 251 places, 796 transitions, 13543 flow. Second operand 32 states and 373 transitions. [2024-11-09 02:43:26,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1293 transitions, 26487 flow [2024-11-09 02:43:30,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1293 transitions, 25596 flow, removed 369 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:30,764 INFO L231 Difference]: Finished difference. Result has 289 places, 1091 transitions, 22700 flow [2024-11-09 02:43:30,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=13284, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=22700, PETRI_PLACES=289, PETRI_TRANSITIONS=1091} [2024-11-09 02:43:30,765 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 261 predicate places. [2024-11-09 02:43:30,765 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 1091 transitions, 22700 flow [2024-11-09 02:43:30,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2024-11-09 02:43:30,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:30,765 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:30,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:30,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:30,966 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)] === [2024-11-09 02:43:30,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1272505103, now seen corresponding path program 12 times [2024-11-09 02:43:30,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:30,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363883959] [2024-11-09 02:43:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:30,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:31,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:31,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363883959] [2024-11-09 02:43:31,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363883959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:31,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729209324] [2024-11-09 02:43:31,100 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:43:31,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:31,102 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:31,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:43:31,156 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:43:31,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:31,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:43:31,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:31,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:31,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729209324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:31,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:31,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-09 02:43:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220396536] [2024-11-09 02:43:31,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:31,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:43:31,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:43:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:43:31,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:31,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1091 transitions, 22700 flow. Second operand has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 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) [2024-11-09 02:43:31,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:31,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:31,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:37,108 INFO L124 PetriNetUnfolderBase]: 10050/14126 cut-off events. [2024-11-09 02:43:37,108 INFO L125 PetriNetUnfolderBase]: For 827941/827941 co-relation queries the response was YES. [2024-11-09 02:43:37,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158174 conditions, 14126 events. 10050/14126 cut-off events. For 827941/827941 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 74709 event pairs, 1306 based on Foata normal form. 466/14588 useless extension candidates. Maximal degree in co-relation 157539. Up to 6234 conditions per place. [2024-11-09 02:43:37,289 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 715 selfloop transitions, 1278 changer transitions 4/1998 dead transitions. [2024-11-09 02:43:37,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1998 transitions, 49111 flow [2024-11-09 02:43:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-09 02:43:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-09 02:43:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 780 transitions. [2024-11-09 02:43:37,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-09 02:43:37,292 INFO L175 Difference]: Start difference. First operand has 289 places, 1091 transitions, 22700 flow. Second operand 72 states and 780 transitions. [2024-11-09 02:43:37,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1998 transitions, 49111 flow [2024-11-09 02:43:47,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 1998 transitions, 37030 flow, removed 5671 selfloop flow, removed 4 redundant places. [2024-11-09 02:43:47,757 INFO L231 Difference]: Finished difference. Result has 384 places, 1704 transitions, 33849 flow [2024-11-09 02:43:47,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=17455, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=33849, PETRI_PLACES=384, PETRI_TRANSITIONS=1704} [2024-11-09 02:43:47,759 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 356 predicate places. [2024-11-09 02:43:47,759 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 1704 transitions, 33849 flow [2024-11-09 02:43:47,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 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) [2024-11-09 02:43:47,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:47,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:47,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:47,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:47,960 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)] === [2024-11-09 02:43:47,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:47,960 INFO L85 PathProgramCache]: Analyzing trace with hash 503013424, now seen corresponding path program 13 times [2024-11-09 02:43:47,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:47,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680887634] [2024-11-09 02:43:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:47,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:48,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:48,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680887634] [2024-11-09 02:43:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680887634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960542819] [2024-11-09 02:43:48,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:43:48,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:48,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:48,078 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:48,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:43:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:48,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:43:48,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:48,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:48,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960542819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:48,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:48,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-09 02:43:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441181915] [2024-11-09 02:43:48,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:48,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:43:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:43:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:43:48,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:43:48,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1704 transitions, 33849 flow. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 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) [2024-11-09 02:43:48,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:48,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:43:48,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:55,457 INFO L124 PetriNetUnfolderBase]: 11395/16198 cut-off events. [2024-11-09 02:43:55,457 INFO L125 PetriNetUnfolderBase]: For 562620/562620 co-relation queries the response was YES. [2024-11-09 02:43:55,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164778 conditions, 16198 events. 11395/16198 cut-off events. For 562620/562620 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 90485 event pairs, 1342 based on Foata normal form. 445/16629 useless extension candidates. Maximal degree in co-relation 164045. Up to 5983 conditions per place. [2024-11-09 02:43:55,996 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1196 selfloop transitions, 895 changer transitions 343/2435 dead transitions. [2024-11-09 02:43:55,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 2435 transitions, 53107 flow [2024-11-09 02:43:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 02:43:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 02:43:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 384 transitions. [2024-11-09 02:43:55,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45176470588235296 [2024-11-09 02:43:55,998 INFO L175 Difference]: Start difference. First operand has 384 places, 1704 transitions, 33849 flow. Second operand 34 states and 384 transitions. [2024-11-09 02:43:55,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 2435 transitions, 53107 flow [2024-11-09 02:44:05,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 2435 transitions, 44765 flow, removed 3802 selfloop flow, removed 9 redundant places. [2024-11-09 02:44:05,272 INFO L231 Difference]: Finished difference. Result has 434 places, 1819 transitions, 33314 flow [2024-11-09 02:44:05,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=26870, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=695, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=33314, PETRI_PLACES=434, PETRI_TRANSITIONS=1819} [2024-11-09 02:44:05,275 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 406 predicate places. [2024-11-09 02:44:05,275 INFO L471 AbstractCegarLoop]: Abstraction has has 434 places, 1819 transitions, 33314 flow [2024-11-09 02:44:05,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 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) [2024-11-09 02:44:05,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:05,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:05,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 02:44:05,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 02:44:05,476 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)] === [2024-11-09 02:44:05,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2098982449, now seen corresponding path program 14 times [2024-11-09 02:44:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:05,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592808878] [2024-11-09 02:44:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592808878] [2024-11-09 02:44:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592808878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779876185] [2024-11-09 02:44:05,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:44:05,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:05,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:05,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:44:05,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:44:05,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:44:05,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:05,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:44:05,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:05,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779876185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:05,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:05,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-09 02:44:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434518604] [2024-11-09 02:44:05,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:05,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:44:05,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:44:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:44:05,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 02:44:05,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1819 transitions, 33314 flow. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 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) [2024-11-09 02:44:05,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:05,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 02:44:05,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand