./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/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-wip.fs.cvc5-61a6796-m [2024-10-14 14:36:02,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:36:02,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:36:02,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:36:02,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:36:02,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:36:02,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:36:02,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:36:02,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:36:02,900 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:36:02,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:36:02,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:36:02,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:36:02,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:36:02,905 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:36:02,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:36:02,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:36:02,906 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:36:02,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:36:02,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:36:02,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:36:02,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:36:02,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:36:02,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:36:02,911 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:36:02,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:36:02,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:36:02,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:36:02,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:36:02,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:36:02,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:36:02,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:36:02,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:36:02,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:36:02,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:36:02,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:36:02,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:36:02,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:36:02,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:36:02,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:36:02,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:36:02,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:36:02,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-10-14 14:36:03,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:36:03,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:36:03,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:36:03,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:36:03,214 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:36:03,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-14 14:36:04,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:36:04,877 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:36:04,881 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-14 14:36:04,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0952c34/fe740b58365440a6b16cac56f1523fa2/FLAG204acfa01 [2024-10-14 14:36:05,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0952c34/fe740b58365440a6b16cac56f1523fa2 [2024-10-14 14:36:05,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:36:05,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:36:05,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:36:05,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:36:05,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:36:05,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1530c30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05, skipping insertion in model container [2024-10-14 14:36:05,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:36:05,455 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c[2174,2187] [2024-10-14 14:36:05,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:36:05,465 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:36:05,483 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c[2174,2187] [2024-10-14 14:36:05,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:36:05,500 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:36:05,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05 WrapperNode [2024-10-14 14:36:05,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:36:05,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:36:05,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:36:05,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:36:05,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,538 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-10-14 14:36:05,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:36:05,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:36:05,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:36:05,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:36:05,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,562 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 14:36:05,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:36:05,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:36:05,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:36:05,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:36:05,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (1/1) ... [2024-10-14 14:36:05,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:36:05,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:05,612 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) [2024-10-14 14:36:05,616 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 [2024-10-14 14:36:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:36:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:36:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:36:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:36:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:36:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:36:05,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:36:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:36:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:36:05,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:36:05,676 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:36:05,781 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:36:05,783 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:36:05,992 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:36:05,992 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:36:06,159 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:36:06,161 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 14:36:06,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:36:06 BoogieIcfgContainer [2024-10-14 14:36:06,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:36:06,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:36:06,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:36:06,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:36:06,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:36:05" (1/3) ... [2024-10-14 14:36:06,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7de04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:36:06, skipping insertion in model container [2024-10-14 14:36:06,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:05" (2/3) ... [2024-10-14 14:36:06,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7de04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:36:06, skipping insertion in model container [2024-10-14 14:36:06,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:36:06" (3/3) ... [2024-10-14 14:36:06,170 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-10-14 14:36:06,184 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:36:06,184 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:36:06,184 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:36:06,265 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 14:36:06,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2024-10-14 14:36:06,326 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-10-14 14:36:06,326 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:36:06,330 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. [2024-10-14 14:36:06,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow [2024-10-14 14:36:06,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 60 flow [2024-10-14 14:36:06,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:36:06,351 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;@25b6cc6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:36:06,351 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:36:06,361 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:36:06,362 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-14 14:36:06,362 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:36:06,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:06,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:06,365 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)] === [2024-10-14 14:36:06,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1904699272, now seen corresponding path program 1 times [2024-10-14 14:36:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:06,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680746957] [2024-10-14 14:36:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:06,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:07,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:07,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680746957] [2024-10-14 14:36:07,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680746957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:07,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:07,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:36:07,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279143043] [2024-10-14 14:36:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:07,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:36:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:36:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:36:07,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:07,205 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) [2024-10-14 14:36:07,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:07,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:07,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:07,427 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-10-14 14:36:07,427 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-14 14:36:07,431 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. [2024-10-14 14:36:07,437 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-10-14 14:36:07,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-10-14 14:36:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:36:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:36:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-14 14:36:07,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 14:36:07,450 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 3 states and 50 transitions. [2024-10-14 14:36:07,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-10-14 14:36:07,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 14:36:07,460 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-10-14 14:36:07,462 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} [2024-10-14 14:36:07,465 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-10-14 14:36:07,466 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-10-14 14:36:07,466 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) [2024-10-14 14:36:07,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:07,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:07,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:36:07,467 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)] === [2024-10-14 14:36:07,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash -503843282, now seen corresponding path program 1 times [2024-10-14 14:36:07,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:07,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061065817] [2024-10-14 14:36:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:07,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:07,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:07,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061065817] [2024-10-14 14:36:07,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061065817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:07,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:07,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:07,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332121253] [2024-10-14 14:36:07,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:07,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:07,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:07,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:07,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:07,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:07,682 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) [2024-10-14 14:36:07,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:07,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:07,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:07,966 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-10-14 14:36:07,967 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-10-14 14:36:07,969 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. [2024-10-14 14:36:07,975 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-10-14 14:36:07,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-10-14 14:36:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-10-14 14:36:07,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.568 [2024-10-14 14:36:07,979 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 71 transitions. [2024-10-14 14:36:07,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-10-14 14:36:07,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:07,984 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-10-14 14:36:07,984 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} [2024-10-14 14:36:07,985 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2024-10-14 14:36:07,987 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-10-14 14:36:07,987 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) [2024-10-14 14:36:07,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:07,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:07,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:36:07,988 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)] === [2024-10-14 14:36:07,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash -759649045, now seen corresponding path program 1 times [2024-10-14 14:36:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780712846] [2024-10-14 14:36:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:08,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780712846] [2024-10-14 14:36:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780712846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:08,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:08,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:08,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364418812] [2024-10-14 14:36:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:08,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:08,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:08,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:08,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:08,173 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) [2024-10-14 14:36:08,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:08,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:08,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:08,423 INFO L124 PetriNetUnfolderBase]: 546/820 cut-off events. [2024-10-14 14:36:08,423 INFO L125 PetriNetUnfolderBase]: For 742/742 co-relation queries the response was YES. [2024-10-14 14:36:08,428 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. [2024-10-14 14:36:08,433 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 50 selfloop transitions, 10 changer transitions 5/66 dead transitions. [2024-10-14 14:36:08,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 385 flow [2024-10-14 14:36:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-10-14 14:36:08,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616 [2024-10-14 14:36:08,435 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 5 states and 77 transitions. [2024-10-14 14:36:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 385 flow [2024-10-14 14:36:08,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 373 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-14 14:36:08,442 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 199 flow [2024-10-14 14:36:08,442 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} [2024-10-14 14:36:08,444 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-10-14 14:36:08,444 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 199 flow [2024-10-14 14:36:08,445 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) [2024-10-14 14:36:08,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:08,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:08,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:36:08,446 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)] === [2024-10-14 14:36:08,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1245302808, now seen corresponding path program 2 times [2024-10-14 14:36:08,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:08,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987786747] [2024-10-14 14:36:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:08,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:08,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987786747] [2024-10-14 14:36:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987786747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:08,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:08,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:08,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95024548] [2024-10-14 14:36:08,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:08,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:08,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:08,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:08,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:08,565 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) [2024-10-14 14:36:08,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:08,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:08,759 INFO L124 PetriNetUnfolderBase]: 623/934 cut-off events. [2024-10-14 14:36:08,759 INFO L125 PetriNetUnfolderBase]: For 2055/2055 co-relation queries the response was YES. [2024-10-14 14:36:08,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 934 events. 623/934 cut-off events. For 2055/2055 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3528 event pairs, 153 based on Foata normal form. 43/977 useless extension candidates. Maximal degree in co-relation 2550. Up to 520 conditions per place. [2024-10-14 14:36:08,766 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 49 selfloop transitions, 9 changer transitions 12/71 dead transitions. [2024-10-14 14:36:08,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 514 flow [2024-10-14 14:36:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-10-14 14:36:08,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 14:36:08,768 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 199 flow. Second operand 4 states and 65 transitions. [2024-10-14 14:36:08,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 514 flow [2024-10-14 14:36:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 71 transitions, 482 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:08,779 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 241 flow [2024-10-14 14:36:08,779 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=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-10-14 14:36:08,780 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2024-10-14 14:36:08,781 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 241 flow [2024-10-14 14:36:08,781 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) [2024-10-14 14:36:08,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:08,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:36:08,783 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)] === [2024-10-14 14:36:08,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1991329388, now seen corresponding path program 3 times [2024-10-14 14:36:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240604431] [2024-10-14 14:36:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240604431] [2024-10-14 14:36:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240604431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929504996] [2024-10-14 14:36:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:08,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:08,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:08,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 241 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) [2024-10-14 14:36:08,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:08,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:08,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:09,119 INFO L124 PetriNetUnfolderBase]: 706/1045 cut-off events. [2024-10-14 14:36:09,120 INFO L125 PetriNetUnfolderBase]: For 3137/3137 co-relation queries the response was YES. [2024-10-14 14:36:09,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4157 conditions, 1045 events. 706/1045 cut-off events. For 3137/3137 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3979 event pairs, 223 based on Foata normal form. 16/1061 useless extension candidates. Maximal degree in co-relation 2878. Up to 711 conditions per place. [2024-10-14 14:36:09,128 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 46 selfloop transitions, 21 changer transitions 3/71 dead transitions. [2024-10-14 14:36:09,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 71 transitions, 572 flow [2024-10-14 14:36:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-10-14 14:36:09,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-10-14 14:36:09,130 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 241 flow. Second operand 5 states and 70 transitions. [2024-10-14 14:36:09,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 71 transitions, 572 flow [2024-10-14 14:36:09,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 71 transitions, 559 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:09,137 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 417 flow [2024-10-14 14:36:09,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2024-10-14 14:36:09,138 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-10-14 14:36:09,138 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 417 flow [2024-10-14 14:36:09,138 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) [2024-10-14 14:36:09,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:09,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:09,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:36:09,139 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)] === [2024-10-14 14:36:09,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1089659128, now seen corresponding path program 1 times [2024-10-14 14:36:09,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:09,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474836662] [2024-10-14 14:36:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:09,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:09,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474836662] [2024-10-14 14:36:09,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474836662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:09,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:09,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:09,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985633371] [2024-10-14 14:36:09,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:09,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:09,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:09,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:09,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:09,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 417 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) [2024-10-14 14:36:09,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:09,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:09,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:09,485 INFO L124 PetriNetUnfolderBase]: 739/1140 cut-off events. [2024-10-14 14:36:09,486 INFO L125 PetriNetUnfolderBase]: For 4901/4901 co-relation queries the response was YES. [2024-10-14 14:36:09,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 1140 events. 739/1140 cut-off events. For 4901/4901 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4773 event pairs, 213 based on Foata normal form. 48/1188 useless extension candidates. Maximal degree in co-relation 3605. Up to 548 conditions per place. [2024-10-14 14:36:09,496 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 57 selfloop transitions, 18 changer transitions 4/80 dead transitions. [2024-10-14 14:36:09,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 80 transitions, 716 flow [2024-10-14 14:36:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-10-14 14:36:09,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.584 [2024-10-14 14:36:09,497 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 417 flow. Second operand 5 states and 73 transitions. [2024-10-14 14:36:09,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 80 transitions, 716 flow [2024-10-14 14:36:09,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 80 transitions, 692 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-14 14:36:09,509 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 462 flow [2024-10-14 14:36:09,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2024-10-14 14:36:09,510 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 23 predicate places. [2024-10-14 14:36:09,510 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 462 flow [2024-10-14 14:36:09,510 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) [2024-10-14 14:36:09,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:09,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:09,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:36:09,511 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)] === [2024-10-14 14:36:09,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:09,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1347574697, now seen corresponding path program 2 times [2024-10-14 14:36:09,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:09,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267486901] [2024-10-14 14:36:09,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:09,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:09,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:09,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267486901] [2024-10-14 14:36:09,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267486901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:09,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:09,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690673371] [2024-10-14 14:36:09,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:09,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:09,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:09,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:09,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 462 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) [2024-10-14 14:36:09,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:09,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:09,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:09,809 INFO L124 PetriNetUnfolderBase]: 803/1236 cut-off events. [2024-10-14 14:36:09,809 INFO L125 PetriNetUnfolderBase]: For 6783/6783 co-relation queries the response was YES. [2024-10-14 14:36:09,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 1236 events. 803/1236 cut-off events. For 6783/6783 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5236 event pairs, 196 based on Foata normal form. 40/1276 useless extension candidates. Maximal degree in co-relation 4087. Up to 819 conditions per place. [2024-10-14 14:36:09,821 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 61 selfloop transitions, 12 changer transitions 14/88 dead transitions. [2024-10-14 14:36:09,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 906 flow [2024-10-14 14:36:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-14 14:36:09,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-14 14:36:09,823 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 462 flow. Second operand 4 states and 64 transitions. [2024-10-14 14:36:09,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 906 flow [2024-10-14 14:36:09,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 88 transitions, 867 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:09,838 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 533 flow [2024-10-14 14:36:09,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=533, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2024-10-14 14:36:09,839 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2024-10-14 14:36:09,839 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 533 flow [2024-10-14 14:36:09,840 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) [2024-10-14 14:36:09,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:09,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:09,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:36:09,840 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)] === [2024-10-14 14:36:09,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 37884406, now seen corresponding path program 4 times [2024-10-14 14:36:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:09,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439278661] [2024-10-14 14:36:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:09,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439278661] [2024-10-14 14:36:09,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439278661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:09,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662212615] [2024-10-14 14:36:09,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:09,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:09,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:09,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 533 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) [2024-10-14 14:36:09,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:09,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:09,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:10,160 INFO L124 PetriNetUnfolderBase]: 891/1364 cut-off events. [2024-10-14 14:36:10,160 INFO L125 PetriNetUnfolderBase]: For 8492/8492 co-relation queries the response was YES. [2024-10-14 14:36:10,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 1364 events. 891/1364 cut-off events. For 8492/8492 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5836 event pairs, 309 based on Foata normal form. 22/1386 useless extension candidates. Maximal degree in co-relation 4758. Up to 924 conditions per place. [2024-10-14 14:36:10,172 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 55 selfloop transitions, 29 changer transitions 16/101 dead transitions. [2024-10-14 14:36:10,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 101 transitions, 1165 flow [2024-10-14 14:36:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-10-14 14:36:10,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-10-14 14:36:10,173 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 533 flow. Second operand 5 states and 67 transitions. [2024-10-14 14:36:10,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 101 transitions, 1165 flow [2024-10-14 14:36:10,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 1151 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:10,188 INFO L231 Difference]: Finished difference. Result has 60 places, 67 transitions, 768 flow [2024-10-14 14:36:10,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=768, PETRI_PLACES=60, PETRI_TRANSITIONS=67} [2024-10-14 14:36:10,188 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2024-10-14 14:36:10,189 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 67 transitions, 768 flow [2024-10-14 14:36:10,189 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) [2024-10-14 14:36:10,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:10,189 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:10,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:36:10,190 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)] === [2024-10-14 14:36:10,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash 349506583, now seen corresponding path program 3 times [2024-10-14 14:36:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:10,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146664775] [2024-10-14 14:36:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:10,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:10,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:10,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146664775] [2024-10-14 14:36:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146664775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:10,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:10,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:10,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190617430] [2024-10-14 14:36:10,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:10,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:10,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:10,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:10,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 67 transitions, 768 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) [2024-10-14 14:36:10,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:10,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:10,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:10,456 INFO L124 PetriNetUnfolderBase]: 877/1329 cut-off events. [2024-10-14 14:36:10,456 INFO L125 PetriNetUnfolderBase]: For 10556/10556 co-relation queries the response was YES. [2024-10-14 14:36:10,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7933 conditions, 1329 events. 877/1329 cut-off events. For 10556/10556 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5634 event pairs, 281 based on Foata normal form. 48/1377 useless extension candidates. Maximal degree in co-relation 6399. Up to 803 conditions per place. [2024-10-14 14:36:10,472 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 51 selfloop transitions, 32 changer transitions 14/98 dead transitions. [2024-10-14 14:36:10,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 1270 flow [2024-10-14 14:36:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-10-14 14:36:10,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 14:36:10,474 INFO L175 Difference]: Start difference. First operand has 60 places, 67 transitions, 768 flow. Second operand 4 states and 60 transitions. [2024-10-14 14:36:10,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 1270 flow [2024-10-14 14:36:10,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 1165 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-10-14 14:36:10,498 INFO L231 Difference]: Finished difference. Result has 61 places, 68 transitions, 833 flow [2024-10-14 14:36:10,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=833, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2024-10-14 14:36:10,499 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-10-14 14:36:10,500 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 833 flow [2024-10-14 14:36:10,500 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) [2024-10-14 14:36:10,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:10,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:10,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 14:36:10,501 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)] === [2024-10-14 14:36:10,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1486514618, now seen corresponding path program 5 times [2024-10-14 14:36:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997418335] [2024-10-14 14:36:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:10,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:10,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997418335] [2024-10-14 14:36:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997418335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:10,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:10,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:10,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167264077] [2024-10-14 14:36:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:10,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:10,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:10,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 833 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) [2024-10-14 14:36:10,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:10,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:10,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:10,758 INFO L124 PetriNetUnfolderBase]: 778/1125 cut-off events. [2024-10-14 14:36:10,758 INFO L125 PetriNetUnfolderBase]: For 9674/9674 co-relation queries the response was YES. [2024-10-14 14:36:10,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 1125 events. 778/1125 cut-off events. For 9674/9674 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4188 event pairs, 214 based on Foata normal form. 23/1148 useless extension candidates. Maximal degree in co-relation 5637. Up to 723 conditions per place. [2024-10-14 14:36:10,770 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 62 selfloop transitions, 33 changer transitions 3/99 dead transitions. [2024-10-14 14:36:10,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 1341 flow [2024-10-14 14:36:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-10-14 14:36:10,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 14:36:10,772 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 833 flow. Second operand 4 states and 60 transitions. [2024-10-14 14:36:10,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 1341 flow [2024-10-14 14:36:10,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 1263 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:10,787 INFO L231 Difference]: Finished difference. Result has 59 places, 77 transitions, 1031 flow [2024-10-14 14:36:10,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1031, PETRI_PLACES=59, PETRI_TRANSITIONS=77} [2024-10-14 14:36:10,789 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2024-10-14 14:36:10,790 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 77 transitions, 1031 flow [2024-10-14 14:36:10,790 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) [2024-10-14 14:36:10,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:10,791 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] [2024-10-14 14:36:10,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 14:36:10,791 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)] === [2024-10-14 14:36:10,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1171347101, now seen corresponding path program 1 times [2024-10-14 14:36:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122559244] [2024-10-14 14:36:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:10,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122559244] [2024-10-14 14:36:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122559244] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052862161] [2024-10-14 14:36:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:10,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:10,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:10,921 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) [2024-10-14 14:36:10,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:36:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:10,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 14:36:11,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:11,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:11,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052862161] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:11,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:36:11,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-10-14 14:36:11,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257268735] [2024-10-14 14:36:11,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:11,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:11,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:11,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:11,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:36:11,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:11,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 77 transitions, 1031 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:11,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:11,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:11,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:11,362 INFO L124 PetriNetUnfolderBase]: 871/1245 cut-off events. [2024-10-14 14:36:11,362 INFO L125 PetriNetUnfolderBase]: For 11861/11861 co-relation queries the response was YES. [2024-10-14 14:36:11,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8188 conditions, 1245 events. 871/1245 cut-off events. For 11861/11861 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4661 event pairs, 96 based on Foata normal form. 43/1288 useless extension candidates. Maximal degree in co-relation 5360. Up to 974 conditions per place. [2024-10-14 14:36:11,376 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 83 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-10-14 14:36:11,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 106 transitions, 1531 flow [2024-10-14 14:36:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-10-14 14:36:11,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-10-14 14:36:11,378 INFO L175 Difference]: Start difference. First operand has 59 places, 77 transitions, 1031 flow. Second operand 4 states and 59 transitions. [2024-10-14 14:36:11,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 106 transitions, 1531 flow [2024-10-14 14:36:11,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 106 transitions, 1468 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:11,394 INFO L231 Difference]: Finished difference. Result has 61 places, 83 transitions, 1143 flow [2024-10-14 14:36:11,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1143, PETRI_PLACES=61, PETRI_TRANSITIONS=83} [2024-10-14 14:36:11,395 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-10-14 14:36:11,395 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 83 transitions, 1143 flow [2024-10-14 14:36:11,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:11,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:11,396 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] [2024-10-14 14:36:11,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:36:11,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 14:36:11,601 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)] === [2024-10-14 14:36:11,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:11,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1252676831, now seen corresponding path program 2 times [2024-10-14 14:36:11,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:11,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935257434] [2024-10-14 14:36:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:11,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:11,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:11,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935257434] [2024-10-14 14:36:11,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935257434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:11,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:11,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:11,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75107312] [2024-10-14 14:36:11,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:11,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:11,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:11,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:11,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 83 transitions, 1143 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:11,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:11,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:11,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:11,949 INFO L124 PetriNetUnfolderBase]: 1030/1469 cut-off events. [2024-10-14 14:36:11,950 INFO L125 PetriNetUnfolderBase]: For 15069/15069 co-relation queries the response was YES. [2024-10-14 14:36:11,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9787 conditions, 1469 events. 1030/1469 cut-off events. For 15069/15069 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5596 event pairs, 254 based on Foata normal form. 28/1497 useless extension candidates. Maximal degree in co-relation 6272. Up to 1081 conditions per place. [2024-10-14 14:36:11,967 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 91 selfloop transitions, 31 changer transitions 4/127 dead transitions. [2024-10-14 14:36:11,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 127 transitions, 1970 flow [2024-10-14 14:36:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-14 14:36:11,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.504 [2024-10-14 14:36:11,969 INFO L175 Difference]: Start difference. First operand has 61 places, 83 transitions, 1143 flow. Second operand 5 states and 63 transitions. [2024-10-14 14:36:11,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 127 transitions, 1970 flow [2024-10-14 14:36:11,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 127 transitions, 1939 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:11,986 INFO L231 Difference]: Finished difference. Result has 67 places, 98 transitions, 1527 flow [2024-10-14 14:36:11,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1527, PETRI_PLACES=67, PETRI_TRANSITIONS=98} [2024-10-14 14:36:11,989 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 39 predicate places. [2024-10-14 14:36:11,989 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 98 transitions, 1527 flow [2024-10-14 14:36:11,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:11,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:11,990 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] [2024-10-14 14:36:11,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 14:36:11,990 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)] === [2024-10-14 14:36:11,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1270693905, now seen corresponding path program 3 times [2024-10-14 14:36:11,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:11,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387969805] [2024-10-14 14:36:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:11,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387969805] [2024-10-14 14:36:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387969805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:12,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:12,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601759597] [2024-10-14 14:36:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:12,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:12,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:12,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 98 transitions, 1527 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:12,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:12,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:12,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:12,347 INFO L124 PetriNetUnfolderBase]: 1015/1478 cut-off events. [2024-10-14 14:36:12,348 INFO L125 PetriNetUnfolderBase]: For 18758/18758 co-relation queries the response was YES. [2024-10-14 14:36:12,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10653 conditions, 1478 events. 1015/1478 cut-off events. For 18758/18758 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5821 event pairs, 284 based on Foata normal form. 52/1530 useless extension candidates. Maximal degree in co-relation 6699. Up to 1017 conditions per place. [2024-10-14 14:36:12,363 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 100 selfloop transitions, 22 changer transitions 8/131 dead transitions. [2024-10-14 14:36:12,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 131 transitions, 2117 flow [2024-10-14 14:36:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-10-14 14:36:12,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-10-14 14:36:12,364 INFO L175 Difference]: Start difference. First operand has 67 places, 98 transitions, 1527 flow. Second operand 5 states and 67 transitions. [2024-10-14 14:36:12,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 131 transitions, 2117 flow [2024-10-14 14:36:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 131 transitions, 2027 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:12,388 INFO L231 Difference]: Finished difference. Result has 71 places, 98 transitions, 1524 flow [2024-10-14 14:36:12,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1524, PETRI_PLACES=71, PETRI_TRANSITIONS=98} [2024-10-14 14:36:12,389 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2024-10-14 14:36:12,390 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 98 transitions, 1524 flow [2024-10-14 14:36:12,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:12,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:12,390 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] [2024-10-14 14:36:12,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 14:36:12,390 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)] === [2024-10-14 14:36:12,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:12,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1239404895, now seen corresponding path program 4 times [2024-10-14 14:36:12,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:12,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294022629] [2024-10-14 14:36:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294022629] [2024-10-14 14:36:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294022629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347942821] [2024-10-14 14:36:12,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:36:12,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:12,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:12,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:36:12,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:36:12,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:36:12,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:12,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 14:36:12,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:12,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347942821] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:12,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-14 14:36:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040998067] [2024-10-14 14:36:12,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:12,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 14:36:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 14:36:12,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:36:12,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:12,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 98 transitions, 1524 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:12,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:12,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:12,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:13,322 INFO L124 PetriNetUnfolderBase]: 1310/1891 cut-off events. [2024-10-14 14:36:13,323 INFO L125 PetriNetUnfolderBase]: For 25662/25662 co-relation queries the response was YES. [2024-10-14 14:36:13,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 1891 events. 1310/1891 cut-off events. For 25662/25662 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7802 event pairs, 165 based on Foata normal form. 35/1926 useless extension candidates. Maximal degree in co-relation 9544. Up to 969 conditions per place. [2024-10-14 14:36:13,344 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 101 selfloop transitions, 127 changer transitions 4/233 dead transitions. [2024-10-14 14:36:13,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 233 transitions, 3647 flow [2024-10-14 14:36:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 14:36:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 14:36:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 202 transitions. [2024-10-14 14:36:13,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4752941176470588 [2024-10-14 14:36:13,347 INFO L175 Difference]: Start difference. First operand has 71 places, 98 transitions, 1524 flow. Second operand 17 states and 202 transitions. [2024-10-14 14:36:13,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 233 transitions, 3647 flow [2024-10-14 14:36:13,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 233 transitions, 3528 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 14:36:13,381 INFO L231 Difference]: Finished difference. Result has 93 places, 162 transitions, 2949 flow [2024-10-14 14:36:13,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2949, PETRI_PLACES=93, PETRI_TRANSITIONS=162} [2024-10-14 14:36:13,382 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2024-10-14 14:36:13,382 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 162 transitions, 2949 flow [2024-10-14 14:36:13,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:13,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:13,382 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] [2024-10-14 14:36:13,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:36:13,586 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,SelfDestructingSolverStorable13 [2024-10-14 14:36:13,587 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)] === [2024-10-14 14:36:13,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash -409359881, now seen corresponding path program 5 times [2024-10-14 14:36:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:13,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68176444] [2024-10-14 14:36:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:13,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68176444] [2024-10-14 14:36:13,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68176444] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404028232] [2024-10-14 14:36:13,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:36:13,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:13,674 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) [2024-10-14 14:36:13,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:36:13,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 14:36:13,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:13,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 14:36:13,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:13,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404028232] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:13,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:13,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-14 14:36:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504730277] [2024-10-14 14:36:13,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:13,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 14:36:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 14:36:13,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:36:13,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:13,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 162 transitions, 2949 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:13,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:13,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:13,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:14,300 INFO L124 PetriNetUnfolderBase]: 1332/1904 cut-off events. [2024-10-14 14:36:14,300 INFO L125 PetriNetUnfolderBase]: For 32649/32649 co-relation queries the response was YES. [2024-10-14 14:36:14,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16196 conditions, 1904 events. 1332/1904 cut-off events. For 32649/32649 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7647 event pairs, 283 based on Foata normal form. 31/1935 useless extension candidates. Maximal degree in co-relation 15110. Up to 1178 conditions per place. [2024-10-14 14:36:14,324 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 96 selfloop transitions, 115 changer transitions 0/212 dead transitions. [2024-10-14 14:36:14,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 212 transitions, 4021 flow [2024-10-14 14:36:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:36:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:36:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-10-14 14:36:14,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2024-10-14 14:36:14,326 INFO L175 Difference]: Start difference. First operand has 93 places, 162 transitions, 2949 flow. Second operand 9 states and 106 transitions. [2024-10-14 14:36:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 212 transitions, 4021 flow [2024-10-14 14:36:14,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 212 transitions, 3275 flow, removed 191 selfloop flow, removed 9 redundant places. [2024-10-14 14:36:14,401 INFO L231 Difference]: Finished difference. Result has 95 places, 185 transitions, 2997 flow [2024-10-14 14:36:14,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2997, PETRI_PLACES=95, PETRI_TRANSITIONS=185} [2024-10-14 14:36:14,402 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 67 predicate places. [2024-10-14 14:36:14,402 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 185 transitions, 2997 flow [2024-10-14 14:36:14,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:14,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:14,403 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] [2024-10-14 14:36:14,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 14:36:14,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:14,604 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)] === [2024-10-14 14:36:14,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1563343921, now seen corresponding path program 1 times [2024-10-14 14:36:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:14,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664771654] [2024-10-14 14:36:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:14,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:14,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664771654] [2024-10-14 14:36:14,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664771654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321950128] [2024-10-14 14:36:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:14,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:14,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:14,817 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) [2024-10-14 14:36:14,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:36:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:14,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 14:36:14,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:15,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321950128] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:15,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:15,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-10-14 14:36:15,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956274179] [2024-10-14 14:36:15,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:15,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:36:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:36:15,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:36:15,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:15,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 185 transitions, 2997 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) [2024-10-14 14:36:15,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:15,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:15,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:16,343 INFO L124 PetriNetUnfolderBase]: 1926/2774 cut-off events. [2024-10-14 14:36:16,344 INFO L125 PetriNetUnfolderBase]: For 37156/37156 co-relation queries the response was YES. [2024-10-14 14:36:16,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21692 conditions, 2774 events. 1926/2774 cut-off events. For 37156/37156 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11958 event pairs, 195 based on Foata normal form. 2/2776 useless extension candidates. Maximal degree in co-relation 20346. Up to 2046 conditions per place. [2024-10-14 14:36:16,378 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 210 selfloop transitions, 86 changer transitions 2/299 dead transitions. [2024-10-14 14:36:16,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 299 transitions, 4999 flow [2024-10-14 14:36:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:36:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:36:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-10-14 14:36:16,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5955555555555555 [2024-10-14 14:36:16,380 INFO L175 Difference]: Start difference. First operand has 95 places, 185 transitions, 2997 flow. Second operand 9 states and 134 transitions. [2024-10-14 14:36:16,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 299 transitions, 4999 flow [2024-10-14 14:36:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 299 transitions, 4767 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-10-14 14:36:16,490 INFO L231 Difference]: Finished difference. Result has 104 places, 239 transitions, 4120 flow [2024-10-14 14:36:16,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4120, PETRI_PLACES=104, PETRI_TRANSITIONS=239} [2024-10-14 14:36:16,491 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2024-10-14 14:36:16,491 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 239 transitions, 4120 flow [2024-10-14 14:36:16,492 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) [2024-10-14 14:36:16,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:16,492 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] [2024-10-14 14:36:16,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 14:36:16,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 14:36:16,693 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)] === [2024-10-14 14:36:16,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1077805155, now seen corresponding path program 2 times [2024-10-14 14:36:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566947498] [2024-10-14 14:36:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:16,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:16,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566947498] [2024-10-14 14:36:16,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566947498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:16,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828403221] [2024-10-14 14:36:16,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:36:16,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:16,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:16,924 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) [2024-10-14 14:36:16,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 14:36:16,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:36:16,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:16,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 14:36:16,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:17,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:17,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828403221] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:17,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:17,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-10-14 14:36:17,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386195981] [2024-10-14 14:36:17,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:17,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:36:17,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:36:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:36:17,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:17,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 239 transitions, 4120 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) [2024-10-14 14:36:17,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:17,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:17,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:18,325 INFO L124 PetriNetUnfolderBase]: 2222/3206 cut-off events. [2024-10-14 14:36:18,325 INFO L125 PetriNetUnfolderBase]: For 45245/45245 co-relation queries the response was YES. [2024-10-14 14:36:18,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25888 conditions, 3206 events. 2222/3206 cut-off events. For 45245/45245 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 14103 event pairs, 314 based on Foata normal form. 2/3206 useless extension candidates. Maximal degree in co-relation 25106. Up to 2584 conditions per place. [2024-10-14 14:36:18,364 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 230 selfloop transitions, 81 changer transitions 2/314 dead transitions. [2024-10-14 14:36:18,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 314 transitions, 5518 flow [2024-10-14 14:36:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:36:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:36:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-10-14 14:36:18,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2024-10-14 14:36:18,366 INFO L175 Difference]: Start difference. First operand has 104 places, 239 transitions, 4120 flow. Second operand 9 states and 131 transitions. [2024-10-14 14:36:18,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 314 transitions, 5518 flow [2024-10-14 14:36:18,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 314 transitions, 5134 flow, removed 176 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:18,487 INFO L231 Difference]: Finished difference. Result has 114 places, 258 transitions, 4341 flow [2024-10-14 14:36:18,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4341, PETRI_PLACES=114, PETRI_TRANSITIONS=258} [2024-10-14 14:36:18,488 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2024-10-14 14:36:18,488 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 258 transitions, 4341 flow [2024-10-14 14:36:18,488 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) [2024-10-14 14:36:18,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:18,488 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] [2024-10-14 14:36:18,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 14:36:18,689 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,SelfDestructingSolverStorable16 [2024-10-14 14:36:18,689 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)] === [2024-10-14 14:36:18,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1100252289, now seen corresponding path program 3 times [2024-10-14 14:36:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:18,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91312536] [2024-10-14 14:36:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:18,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:18,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91312536] [2024-10-14 14:36:18,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91312536] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930795781] [2024-10-14 14:36:18,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:36:18,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:18,884 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) [2024-10-14 14:36:18,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 14:36:18,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 14:36:18,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:18,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 14:36:18,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:19,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930795781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:19,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-10-14 14:36:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045719309] [2024-10-14 14:36:19,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:19,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:36:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:36:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:36:19,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:19,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 258 transitions, 4341 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) [2024-10-14 14:36:19,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:19,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:19,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:20,386 INFO L124 PetriNetUnfolderBase]: 2763/3992 cut-off events. [2024-10-14 14:36:20,387 INFO L125 PetriNetUnfolderBase]: For 55879/55879 co-relation queries the response was YES. [2024-10-14 14:36:20,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31435 conditions, 3992 events. 2763/3992 cut-off events. For 55879/55879 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18280 event pairs, 470 based on Foata normal form. 2/3992 useless extension candidates. Maximal degree in co-relation 30857. Up to 3322 conditions per place. [2024-10-14 14:36:20,436 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 277 selfloop transitions, 81 changer transitions 2/361 dead transitions. [2024-10-14 14:36:20,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 361 transitions, 6369 flow [2024-10-14 14:36:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:36:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:36:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-10-14 14:36:20,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2024-10-14 14:36:20,438 INFO L175 Difference]: Start difference. First operand has 114 places, 258 transitions, 4341 flow. Second operand 9 states and 131 transitions. [2024-10-14 14:36:20,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 361 transitions, 6369 flow [2024-10-14 14:36:20,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 361 transitions, 6074 flow, removed 111 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:20,595 INFO L231 Difference]: Finished difference. Result has 124 places, 307 transitions, 5299 flow [2024-10-14 14:36:20,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=4046, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5299, PETRI_PLACES=124, PETRI_TRANSITIONS=307} [2024-10-14 14:36:20,596 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 96 predicate places. [2024-10-14 14:36:20,596 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 307 transitions, 5299 flow [2024-10-14 14:36:20,596 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) [2024-10-14 14:36:20,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:20,597 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] [2024-10-14 14:36:20,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 14:36:20,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 14:36:20,797 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)] === [2024-10-14 14:36:20,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash -596321151, now seen corresponding path program 4 times [2024-10-14 14:36:20,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:20,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878845439] [2024-10-14 14:36:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:20,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878845439] [2024-10-14 14:36:20,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878845439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:20,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413451612] [2024-10-14 14:36:20,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:36:20,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:20,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:20,977 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) [2024-10-14 14:36:20,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 14:36:21,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:36:21,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:21,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 14:36:21,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:21,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:21,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413451612] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:21,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:21,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-10-14 14:36:21,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699582580] [2024-10-14 14:36:21,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:21,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:36:21,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:21,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:36:21,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:36:21,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:21,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 307 transitions, 5299 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) [2024-10-14 14:36:21,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:21,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:21,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:22,437 INFO L124 PetriNetUnfolderBase]: 3043/4400 cut-off events. [2024-10-14 14:36:22,438 INFO L125 PetriNetUnfolderBase]: For 63738/63738 co-relation queries the response was YES. [2024-10-14 14:36:22,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34922 conditions, 4400 events. 3043/4400 cut-off events. For 63738/63738 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20464 event pairs, 584 based on Foata normal form. 2/4402 useless extension candidates. Maximal degree in co-relation 34334. Up to 3845 conditions per place. [2024-10-14 14:36:22,483 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 294 selfloop transitions, 78 changer transitions 2/375 dead transitions. [2024-10-14 14:36:22,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 375 transitions, 6837 flow [2024-10-14 14:36:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:36:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:36:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-10-14 14:36:22,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2024-10-14 14:36:22,485 INFO L175 Difference]: Start difference. First operand has 124 places, 307 transitions, 5299 flow. Second operand 9 states and 127 transitions. [2024-10-14 14:36:22,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 375 transitions, 6837 flow [2024-10-14 14:36:22,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 375 transitions, 6431 flow, removed 187 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:22,782 INFO L231 Difference]: Finished difference. Result has 134 places, 326 transitions, 5536 flow [2024-10-14 14:36:22,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=4893, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5536, PETRI_PLACES=134, PETRI_TRANSITIONS=326} [2024-10-14 14:36:22,784 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2024-10-14 14:36:22,784 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 326 transitions, 5536 flow [2024-10-14 14:36:22,784 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) [2024-10-14 14:36:22,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:22,785 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] [2024-10-14 14:36:22,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 14:36:22,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:22,986 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)] === [2024-10-14 14:36:22,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:22,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1361636989, now seen corresponding path program 5 times [2024-10-14 14:36:22,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:22,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062873414] [2024-10-14 14:36:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:22,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062873414] [2024-10-14 14:36:23,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062873414] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679927232] [2024-10-14 14:36:23,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:36:23,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:23,179 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) [2024-10-14 14:36:23,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 14:36:23,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:36:23,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:23,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 14:36:23,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:23,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679927232] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:24,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:24,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-10-14 14:36:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760468727] [2024-10-14 14:36:24,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:24,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:36:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:36:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:36:24,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:24,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 326 transitions, 5536 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) [2024-10-14 14:36:24,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:24,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:24,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:25,496 INFO L124 PetriNetUnfolderBase]: 3399/4913 cut-off events. [2024-10-14 14:36:25,496 INFO L125 PetriNetUnfolderBase]: For 68691/68691 co-relation queries the response was YES. [2024-10-14 14:36:25,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38227 conditions, 4913 events. 3399/4913 cut-off events. For 68691/68691 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23312 event pairs, 728 based on Foata normal form. 1/4914 useless extension candidates. Maximal degree in co-relation 37595. Up to 4446 conditions per place. [2024-10-14 14:36:25,554 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 331 selfloop transitions, 68 changer transitions 1/401 dead transitions. [2024-10-14 14:36:25,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 401 transitions, 7346 flow [2024-10-14 14:36:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:36:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:36:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-10-14 14:36:25,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-10-14 14:36:25,556 INFO L175 Difference]: Start difference. First operand has 134 places, 326 transitions, 5536 flow. Second operand 8 states and 111 transitions. [2024-10-14 14:36:25,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 401 transitions, 7346 flow [2024-10-14 14:36:25,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 401 transitions, 7008 flow, removed 134 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:25,834 INFO L231 Difference]: Finished difference. Result has 142 places, 362 transitions, 6162 flow [2024-10-14 14:36:25,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=5198, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6162, PETRI_PLACES=142, PETRI_TRANSITIONS=362} [2024-10-14 14:36:25,835 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 114 predicate places. [2024-10-14 14:36:25,835 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 362 transitions, 6162 flow [2024-10-14 14:36:25,835 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) [2024-10-14 14:36:25,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:25,835 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] [2024-10-14 14:36:25,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 14:36:26,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:26,036 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)] === [2024-10-14 14:36:26,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:26,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1580693891, now seen corresponding path program 6 times [2024-10-14 14:36:26,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:26,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528976220] [2024-10-14 14:36:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:26,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:26,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528976220] [2024-10-14 14:36:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528976220] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:26,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420409342] [2024-10-14 14:36:26,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 14:36:26,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:26,265 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) [2024-10-14 14:36:26,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 14:36:26,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 14:36:26,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:26,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 14:36:26,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:26,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420409342] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:27,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:27,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-10-14 14:36:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053082125] [2024-10-14 14:36:27,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:27,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:36:27,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:36:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:36:27,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:27,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 362 transitions, 6162 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) [2024-10-14 14:36:27,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:27,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:27,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:28,146 INFO L124 PetriNetUnfolderBase]: 3629/5248 cut-off events. [2024-10-14 14:36:28,146 INFO L125 PetriNetUnfolderBase]: For 74069/74069 co-relation queries the response was YES. [2024-10-14 14:36:28,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40889 conditions, 5248 events. 3629/5248 cut-off events. For 74069/74069 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 25224 event pairs, 829 based on Foata normal form. 1/5249 useless extension candidates. Maximal degree in co-relation 40220. Up to 4799 conditions per place. [2024-10-14 14:36:28,192 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 346 selfloop transitions, 68 changer transitions 1/416 dead transitions. [2024-10-14 14:36:28,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 416 transitions, 7693 flow [2024-10-14 14:36:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:36:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:36:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-10-14 14:36:28,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-14 14:36:28,194 INFO L175 Difference]: Start difference. First operand has 142 places, 362 transitions, 6162 flow. Second operand 8 states and 110 transitions. [2024-10-14 14:36:28,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 416 transitions, 7693 flow [2024-10-14 14:36:28,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 416 transitions, 7309 flow, removed 176 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:28,534 INFO L231 Difference]: Finished difference. Result has 150 places, 378 transitions, 6377 flow [2024-10-14 14:36:28,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=5778, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6377, PETRI_PLACES=150, PETRI_TRANSITIONS=378} [2024-10-14 14:36:28,535 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-10-14 14:36:28,535 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 378 transitions, 6377 flow [2024-10-14 14:36:28,535 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) [2024-10-14 14:36:28,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:28,536 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] [2024-10-14 14:36:28,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 14:36:28,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:28,736 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)] === [2024-10-14 14:36:28,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash 359350719, now seen corresponding path program 7 times [2024-10-14 14:36:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118677762] [2024-10-14 14:36:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:28,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:28,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118677762] [2024-10-14 14:36:28,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118677762] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:28,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911141881] [2024-10-14 14:36:28,867 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 14:36:28,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:28,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:28,869 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) [2024-10-14 14:36:28,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 14:36:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:28,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:36:28,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:28,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911141881] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:29,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:29,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-10-14 14:36:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876298378] [2024-10-14 14:36:29,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:29,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 14:36:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 14:36:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:36:29,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:29,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 378 transitions, 6377 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:29,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:29,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:29,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:30,817 INFO L124 PetriNetUnfolderBase]: 5591/7946 cut-off events. [2024-10-14 14:36:30,818 INFO L125 PetriNetUnfolderBase]: For 128146/128146 co-relation queries the response was YES. [2024-10-14 14:36:30,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62875 conditions, 7946 events. 5591/7946 cut-off events. For 128146/128146 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39330 event pairs, 499 based on Foata normal form. 75/8021 useless extension candidates. Maximal degree in co-relation 61469. Up to 2702 conditions per place. [2024-10-14 14:36:30,983 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 654 selfloop transitions, 206 changer transitions 0/861 dead transitions. [2024-10-14 14:36:30,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 861 transitions, 15928 flow [2024-10-14 14:36:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 14:36:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 14:36:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 191 transitions. [2024-10-14 14:36:30,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5876923076923077 [2024-10-14 14:36:30,985 INFO L175 Difference]: Start difference. First operand has 150 places, 378 transitions, 6377 flow. Second operand 13 states and 191 transitions. [2024-10-14 14:36:30,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 861 transitions, 15928 flow [2024-10-14 14:36:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 861 transitions, 14903 flow, removed 481 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:31,279 INFO L231 Difference]: Finished difference. Result has 168 places, 491 transitions, 8486 flow [2024-10-14 14:36:31,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=6040, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8486, PETRI_PLACES=168, PETRI_TRANSITIONS=491} [2024-10-14 14:36:31,279 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 140 predicate places. [2024-10-14 14:36:31,280 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 491 transitions, 8486 flow [2024-10-14 14:36:31,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:31,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:31,280 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] [2024-10-14 14:36:31,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 14:36:31,481 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,SelfDestructingSolverStorable21 [2024-10-14 14:36:31,481 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)] === [2024-10-14 14:36:31,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash 991669394, now seen corresponding path program 8 times [2024-10-14 14:36:31,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:31,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351059907] [2024-10-14 14:36:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:31,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:31,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:31,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351059907] [2024-10-14 14:36:31,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351059907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:31,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963583391] [2024-10-14 14:36:31,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:36:31,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:31,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:31,663 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) [2024-10-14 14:36:31,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 14:36:31,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:36:31,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:31,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:36:31,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:31,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963583391] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:31,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-14 14:36:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903993477] [2024-10-14 14:36:31,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:31,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 14:36:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 14:36:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-10-14 14:36:31,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:31,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 491 transitions, 8486 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:31,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:31,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:31,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:33,924 INFO L124 PetriNetUnfolderBase]: 6507/9114 cut-off events. [2024-10-14 14:36:33,924 INFO L125 PetriNetUnfolderBase]: For 179339/179339 co-relation queries the response was YES. [2024-10-14 14:36:33,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78097 conditions, 9114 events. 6507/9114 cut-off events. For 179339/179339 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 44324 event pairs, 1442 based on Foata normal form. 98/9212 useless extension candidates. Maximal degree in co-relation 76358. Up to 6440 conditions per place. [2024-10-14 14:36:34,039 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 560 selfloop transitions, 308 changer transitions 0/869 dead transitions. [2024-10-14 14:36:34,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 869 transitions, 16356 flow [2024-10-14 14:36:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 14:36:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 14:36:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 231 transitions. [2024-10-14 14:36:34,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5435294117647059 [2024-10-14 14:36:34,042 INFO L175 Difference]: Start difference. First operand has 168 places, 491 transitions, 8486 flow. Second operand 17 states and 231 transitions. [2024-10-14 14:36:34,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 869 transitions, 16356 flow [2024-10-14 14:36:34,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 869 transitions, 15687 flow, removed 300 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:34,846 INFO L231 Difference]: Finished difference. Result has 188 places, 646 transitions, 11397 flow [2024-10-14 14:36:34,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=8031, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=11397, PETRI_PLACES=188, PETRI_TRANSITIONS=646} [2024-10-14 14:36:34,847 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 160 predicate places. [2024-10-14 14:36:34,847 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 646 transitions, 11397 flow [2024-10-14 14:36:34,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:34,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:34,847 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] [2024-10-14 14:36:34,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 14:36:35,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-14 14:36:35,048 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)] === [2024-10-14 14:36:35,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1370760533, now seen corresponding path program 9 times [2024-10-14 14:36:35,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:35,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528394160] [2024-10-14 14:36:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:35,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:35,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528394160] [2024-10-14 14:36:35,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528394160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:35,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581061401] [2024-10-14 14:36:35,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:36:35,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:35,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:35,272 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) [2024-10-14 14:36:35,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 14:36:35,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 14:36:35,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:35,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:36:35,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:35,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581061401] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:35,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:35,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-10-14 14:36:35,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979571996] [2024-10-14 14:36:35,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:35,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 14:36:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 14:36:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-10-14 14:36:35,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:35,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 646 transitions, 11397 flow. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:35,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:35,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:39,258 INFO L124 PetriNetUnfolderBase]: 8699/12200 cut-off events. [2024-10-14 14:36:39,258 INFO L125 PetriNetUnfolderBase]: For 265638/265638 co-relation queries the response was YES. [2024-10-14 14:36:39,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108593 conditions, 12200 events. 8699/12200 cut-off events. For 265638/265638 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 62813 event pairs, 893 based on Foata normal form. 439/12639 useless extension candidates. Maximal degree in co-relation 106119. Up to 4409 conditions per place. [2024-10-14 14:36:39,380 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 610 selfloop transitions, 861 changer transitions 104/1576 dead transitions. [2024-10-14 14:36:39,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1576 transitions, 30534 flow [2024-10-14 14:36:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-14 14:36:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-10-14 14:36:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 700 transitions. [2024-10-14 14:36:39,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-14 14:36:39,383 INFO L175 Difference]: Start difference. First operand has 188 places, 646 transitions, 11397 flow. Second operand 63 states and 700 transitions. [2024-10-14 14:36:39,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1576 transitions, 30534 flow [2024-10-14 14:36:40,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1576 transitions, 28145 flow, removed 928 selfloop flow, removed 4 redundant places. [2024-10-14 14:36:41,001 INFO L231 Difference]: Finished difference. Result has 291 places, 1192 transitions, 23855 flow [2024-10-14 14:36:41,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=10459, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=23855, PETRI_PLACES=291, PETRI_TRANSITIONS=1192} [2024-10-14 14:36:41,002 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 263 predicate places. [2024-10-14 14:36:41,002 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 1192 transitions, 23855 flow [2024-10-14 14:36:41,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:41,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:41,003 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] [2024-10-14 14:36:41,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 14:36:41,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-14 14:36:41,204 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)] === [2024-10-14 14:36:41,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:41,205 INFO L85 PathProgramCache]: Analyzing trace with hash 727350929, now seen corresponding path program 10 times [2024-10-14 14:36:41,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:41,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496980821] [2024-10-14 14:36:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:41,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:41,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496980821] [2024-10-14 14:36:41,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496980821] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157247146] [2024-10-14 14:36:41,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:36:41,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:41,336 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) [2024-10-14 14:36:41,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 14:36:41,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:36:41,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:41,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:36:41,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:41,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:41,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157247146] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:41,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:41,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-14 14:36:41,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394601621] [2024-10-14 14:36:41,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:41,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 14:36:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:41,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 14:36:41,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-10-14 14:36:41,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:41,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1192 transitions, 23855 flow. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:41,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:41,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:41,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:46,058 INFO L124 PetriNetUnfolderBase]: 9722/13512 cut-off events. [2024-10-14 14:36:46,059 INFO L125 PetriNetUnfolderBase]: For 352330/352330 co-relation queries the response was YES. [2024-10-14 14:36:46,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136122 conditions, 13512 events. 9722/13512 cut-off events. For 352330/352330 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 69534 event pairs, 1609 based on Foata normal form. 184/13696 useless extension candidates. Maximal degree in co-relation 135452. Up to 9209 conditions per place. [2024-10-14 14:36:46,232 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 938 selfloop transitions, 729 changer transitions 26/1694 dead transitions. [2024-10-14 14:36:46,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1694 transitions, 38039 flow [2024-10-14 14:36:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 14:36:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 14:36:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 209 transitions. [2024-10-14 14:36:46,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49176470588235294 [2024-10-14 14:36:46,234 INFO L175 Difference]: Start difference. First operand has 291 places, 1192 transitions, 23855 flow. Second operand 17 states and 209 transitions. [2024-10-14 14:36:46,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1694 transitions, 38039 flow [2024-10-14 14:36:49,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1694 transitions, 32390 flow, removed 2771 selfloop flow, removed 4 redundant places. [2024-10-14 14:36:49,807 INFO L231 Difference]: Finished difference. Result has 306 places, 1435 transitions, 26764 flow [2024-10-14 14:36:49,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=19631, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=26764, PETRI_PLACES=306, PETRI_TRANSITIONS=1435} [2024-10-14 14:36:49,808 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 278 predicate places. [2024-10-14 14:36:49,808 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 1435 transitions, 26764 flow [2024-10-14 14:36:49,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:49,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:49,809 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] [2024-10-14 14:36:49,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 14:36:50,009 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,SelfDestructingSolverStorable24 [2024-10-14 14:36:50,009 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:36:50,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1054863742, now seen corresponding path program 11 times [2024-10-14 14:36:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105834870] [2024-10-14 14:36:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:50,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105834870] [2024-10-14 14:36:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105834870] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602880863] [2024-10-14 14:36:50,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:36:50,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:50,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:50,152 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) [2024-10-14 14:36:50,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 14:36:50,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:36:50,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:50,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:36:50,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:50,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602880863] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:50,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:50,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-14 14:36:50,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737182889] [2024-10-14 14:36:50,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:50,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 14:36:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 14:36:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-10-14 14:36:50,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:36:50,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1435 transitions, 26764 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) [2024-10-14 14:36:50,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:50,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:36:50,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:56,001 INFO L124 PetriNetUnfolderBase]: 11303/15543 cut-off events. [2024-10-14 14:36:56,001 INFO L125 PetriNetUnfolderBase]: For 363994/363994 co-relation queries the response was YES. [2024-10-14 14:36:56,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156869 conditions, 15543 events. 11303/15543 cut-off events. For 363994/363994 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 79830 event pairs, 223 based on Foata normal form. 477/16020 useless extension candidates. Maximal degree in co-relation 156105. Up to 5217 conditions per place. [2024-10-14 14:36:56,423 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1249 selfloop transitions, 916 changer transitions 114/2280 dead transitions. [2024-10-14 14:36:56,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 2280 transitions, 48040 flow [2024-10-14 14:36:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-14 14:36:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-10-14 14:36:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 511 transitions. [2024-10-14 14:36:56,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2024-10-14 14:36:56,426 INFO L175 Difference]: Start difference. First operand has 306 places, 1435 transitions, 26764 flow. Second operand 42 states and 511 transitions. [2024-10-14 14:36:56,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 2280 transitions, 48040 flow [2024-10-14 14:37:00,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 2280 transitions, 45352 flow, removed 1310 selfloop flow, removed 2 redundant places. [2024-10-14 14:37:00,923 INFO L231 Difference]: Finished difference. Result has 367 places, 1624 transitions, 32930 flow [2024-10-14 14:37:00,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=24518, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=32930, PETRI_PLACES=367, PETRI_TRANSITIONS=1624} [2024-10-14 14:37:00,926 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 339 predicate places. [2024-10-14 14:37:00,926 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 1624 transitions, 32930 flow [2024-10-14 14:37:00,926 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) [2024-10-14 14:37:00,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:00,927 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] [2024-10-14 14:37:00,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 14:37:01,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:01,127 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:37:01,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash 870011735, now seen corresponding path program 12 times [2024-10-14 14:37:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229306823] [2024-10-14 14:37:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:01,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:01,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:01,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229306823] [2024-10-14 14:37:01,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229306823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:01,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747024314] [2024-10-14 14:37:01,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 14:37:01,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:01,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:01,249 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:37:01,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 14:37:01,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 14:37:01,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:37:01,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:37:01,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:01,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:37:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:01,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747024314] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:37:01,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:37:01,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-10-14 14:37:01,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908942841] [2024-10-14 14:37:01,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:37:01,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 14:37:01,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:01,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 14:37:01,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-14 14:37:01,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:37:01,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 1624 transitions, 32930 flow. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:01,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:01,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:37:01,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:10,580 INFO L124 PetriNetUnfolderBase]: 14677/20144 cut-off events. [2024-10-14 14:37:10,580 INFO L125 PetriNetUnfolderBase]: For 661493/661493 co-relation queries the response was YES. [2024-10-14 14:37:10,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223016 conditions, 20144 events. 14677/20144 cut-off events. For 661493/661493 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 107615 event pairs, 387 based on Foata normal form. 701/20845 useless extension candidates. Maximal degree in co-relation 222612. Up to 6913 conditions per place. [2024-10-14 14:37:11,374 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1460 selfloop transitions, 1636 changer transitions 51/3148 dead transitions. [2024-10-14 14:37:11,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 3148 transitions, 72717 flow [2024-10-14 14:37:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-14 14:37:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-10-14 14:37:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 649 transitions. [2024-10-14 14:37:11,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.472 [2024-10-14 14:37:11,376 INFO L175 Difference]: Start difference. First operand has 367 places, 1624 transitions, 32930 flow. Second operand 55 states and 649 transitions. [2024-10-14 14:37:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 3148 transitions, 72717 flow [2024-10-14 14:37:20,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 3148 transitions, 66985 flow, removed 2363 selfloop flow, removed 16 redundant places. [2024-10-14 14:37:20,220 INFO L231 Difference]: Finished difference. Result has 438 places, 2374 transitions, 53555 flow [2024-10-14 14:37:20,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=30137, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=945, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=53555, PETRI_PLACES=438, PETRI_TRANSITIONS=2374} [2024-10-14 14:37:20,222 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 410 predicate places. [2024-10-14 14:37:20,222 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 2374 transitions, 53555 flow [2024-10-14 14:37:20,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:20,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:20,223 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] [2024-10-14 14:37:20,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-14 14:37:20,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-14 14:37:20,423 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:37:20,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash -130838223, now seen corresponding path program 13 times [2024-10-14 14:37:20,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:20,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489416433] [2024-10-14 14:37:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:20,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:20,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489416433] [2024-10-14 14:37:20,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489416433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:20,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851877160] [2024-10-14 14:37:20,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 14:37:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:20,527 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) [2024-10-14 14:37:20,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 14:37:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:20,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:37:20,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:20,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:37:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851877160] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:37:20,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:37:20,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-10-14 14:37:20,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759267642] [2024-10-14 14:37:20,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:37:20,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 14:37:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 14:37:20,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-14 14:37:20,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-10-14 14:37:20,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 2374 transitions, 53555 flow. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:20,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:20,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-10-14 14:37:20,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand