./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/bench-exp2x6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.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 1f93f8af6c620ba8dc44e82cf4c30bbca874545f3e3802e43ba4e1345a3afed4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:34:17,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:34:17,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:34:17,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:34:17,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:34:17,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:34:17,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:34:17,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:34:17,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:34:17,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:34:17,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:34:17,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:34:17,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:34:17,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:34:17,211 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:34:17,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:34:17,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:34:17,211 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:34:17,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:34:17,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:34:17,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:34:17,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:34:17,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:34:17,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:34:17,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:34:17,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:34:17,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:34:17,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:34:17,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:34:17,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:34:17,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:34:17,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:34:17,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:17,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:34:17,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:34:17,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:34:17,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:34:17,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:34:17,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:34:17,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:34:17,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:34:17,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:34:17,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f93f8af6c620ba8dc44e82cf4c30bbca874545f3e3802e43ba4e1345a3afed4 [2024-11-20 09:34:17,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:34:17,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:34:17,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:34:17,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:34:17,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:34:17,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2024-11-20 09:34:18,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:34:19,125 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:34:19,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2024-11-20 09:34:19,134 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc01081e/6bb62dcfe2b944199eac74d7f5966d49/FLAG8ee43557f [2024-11-20 09:34:19,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc01081e/6bb62dcfe2b944199eac74d7f5966d49 [2024-11-20 09:34:19,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:34:19,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:34:19,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:19,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:34:19,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:34:19,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f4da81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19, skipping insertion in model container [2024-11-20 09:34:19,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:34:19,388 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c[2505,2518] [2024-11-20 09:34:19,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:19,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:34:19,420 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c[2505,2518] [2024-11-20 09:34:19,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:34:19,437 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:34:19,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19 WrapperNode [2024-11-20 09:34:19,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:34:19,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:19,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:34:19,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:34:19,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,467 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-20 09:34:19,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:34:19,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:34:19,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:34:19,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:34:19,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,496 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 09:34:19,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:34:19,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:34:19,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:34:19,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:34:19,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (1/1) ... [2024-11-20 09:34:19,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:34:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:19,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:34:19,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:34:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:34:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:34:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:34:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:34:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:34:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:34:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:34:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-20 09:34:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-20 09:34:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:34:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:34:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:34:19,632 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:34:19,737 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:34:19,739 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:34:19,994 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:34:19,994 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:34:20,136 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:34:20,137 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 09:34:20,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:20 BoogieIcfgContainer [2024-11-20 09:34:20,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:34:20,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:34:20,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:34:20,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:34:20,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:34:19" (1/3) ... [2024-11-20 09:34:20,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a139fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:20, skipping insertion in model container [2024-11-20 09:34:20,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:19" (2/3) ... [2024-11-20 09:34:20,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a139fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:20, skipping insertion in model container [2024-11-20 09:34:20,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:20" (3/3) ... [2024-11-20 09:34:20,156 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2024-11-20 09:34:20,169 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:34:20,169 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:34:20,169 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:34:20,241 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-20 09:34:20,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 92 flow [2024-11-20 09:34:20,307 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-20 09:34:20,307 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 09:34:20,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 28 events. 4/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-20 09:34:20,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 32 transitions, 92 flow [2024-11-20 09:34:20,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 78 flow [2024-11-20 09:34:20,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:34:20,330 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;@2c3f2128, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:34:20,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 09:34:20,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:34:20,344 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-20 09:34:20,344 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 09:34:20,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:20,345 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, 1, 1] [2024-11-20 09:34:20,346 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 2 more)] === [2024-11-20 09:34:20,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash -28993694, now seen corresponding path program 1 times [2024-11-20 09:34:20,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:20,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896005289] [2024-11-20 09:34:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:20,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896005289] [2024-11-20 09:34:20,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896005289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:20,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:20,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:34:20,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310881475] [2024-11-20 09:34:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:20,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:34:20,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:34:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:34:20,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:20,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:20,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:20,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:20,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:21,359 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-11-20 09:34:21,360 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-20 09:34:21,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5580 event pairs, 123 based on Foata normal form. 1/990 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-11-20 09:34:21,385 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-20 09:34:21,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-11-20 09:34:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:34:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:34:21,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-20 09:34:21,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-20 09:34:21,400 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 78 flow. Second operand 3 states and 69 transitions. [2024-11-20 09:34:21,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-11-20 09:34:21,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-20 09:34:21,412 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-11-20 09:34:21,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-20 09:34:21,419 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-20 09:34:21,422 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-11-20 09:34:21,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:21,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:21,422 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, 1, 1, 1] [2024-11-20 09:34:21,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:34:21,423 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 2 more)] === [2024-11-20 09:34:21,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1068145511, now seen corresponding path program 1 times [2024-11-20 09:34:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283192492] [2024-11-20 09:34:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283192492] [2024-11-20 09:34:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283192492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:21,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280257733] [2024-11-20 09:34:21,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:21,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:21,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:21,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:21,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:21,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:21,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:21,886 INFO L124 PetriNetUnfolderBase]: 1593/2038 cut-off events. [2024-11-20 09:34:21,887 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2024-11-20 09:34:21,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 2038 events. 1593/2038 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7075 event pairs, 86 based on Foata normal form. 34/2062 useless extension candidates. Maximal degree in co-relation 1272. Up to 842 conditions per place. [2024-11-20 09:34:21,903 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-11-20 09:34:21,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-11-20 09:34:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-20 09:34:21,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-20 09:34:21,907 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 115 transitions. [2024-11-20 09:34:21,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-11-20 09:34:21,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:21,911 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-11-20 09:34:21,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-11-20 09:34:21,912 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-20 09:34:21,912 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-11-20 09:34:21,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:21,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:21,913 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, 1, 1, 1] [2024-11-20 09:34:21,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:34:21,913 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 2 more)] === [2024-11-20 09:34:21,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1282708129, now seen corresponding path program 2 times [2024-11-20 09:34:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:21,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678279205] [2024-11-20 09:34:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:22,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678279205] [2024-11-20 09:34:22,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678279205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595188018] [2024-11-20 09:34:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:22,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:22,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:22,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:22,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:22,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:22,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:22,287 INFO L124 PetriNetUnfolderBase]: 1517/1972 cut-off events. [2024-11-20 09:34:22,288 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2024-11-20 09:34:22,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6041 conditions, 1972 events. 1517/1972 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7238 event pairs, 302 based on Foata normal form. 61/1993 useless extension candidates. Maximal degree in co-relation 1673. Up to 1068 conditions per place. [2024-11-20 09:34:22,304 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-11-20 09:34:22,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 80 transitions, 438 flow [2024-11-20 09:34:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-20 09:34:22,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-11-20 09:34:22,308 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 114 transitions. [2024-11-20 09:34:22,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 80 transitions, 438 flow [2024-11-20 09:34:22,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 80 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:34:22,314 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 209 flow [2024-11-20 09:34:22,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2024-11-20 09:34:22,315 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-11-20 09:34:22,316 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 209 flow [2024-11-20 09:34:22,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:22,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:22,316 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, 1, 1, 1] [2024-11-20 09:34:22,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:34:22,317 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 2 more)] === [2024-11-20 09:34:22,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2093771994, now seen corresponding path program 1 times [2024-11-20 09:34:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:22,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539199329] [2024-11-20 09:34:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:22,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:22,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539199329] [2024-11-20 09:34:22,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539199329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:22,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:22,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:22,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156900822] [2024-11-20 09:34:22,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:22,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:22,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:22,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:22,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:22,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:22,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:22,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:22,689 INFO L124 PetriNetUnfolderBase]: 1486/1931 cut-off events. [2024-11-20 09:34:22,690 INFO L125 PetriNetUnfolderBase]: For 3026/3026 co-relation queries the response was YES. [2024-11-20 09:34:22,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 1931 events. 1486/1931 cut-off events. For 3026/3026 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7022 event pairs, 95 based on Foata normal form. 46/1967 useless extension candidates. Maximal degree in co-relation 3622. Up to 812 conditions per place. [2024-11-20 09:34:22,708 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 68 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2024-11-20 09:34:22,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 81 transitions, 474 flow [2024-11-20 09:34:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-20 09:34:22,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-20 09:34:22,711 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 209 flow. Second operand 5 states and 113 transitions. [2024-11-20 09:34:22,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 81 transitions, 474 flow [2024-11-20 09:34:22,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 465 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:22,719 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 214 flow [2024-11-20 09:34:22,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-20 09:34:22,720 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-20 09:34:22,720 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 214 flow [2024-11-20 09:34:22,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:22,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:22,721 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, 1, 1, 1] [2024-11-20 09:34:22,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:34:22,721 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 2 more)] === [2024-11-20 09:34:22,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash -326201025, now seen corresponding path program 1 times [2024-11-20 09:34:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:22,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920366855] [2024-11-20 09:34:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:22,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:22,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920366855] [2024-11-20 09:34:22,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920366855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:22,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:22,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:22,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806334595] [2024-11-20 09:34:22,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:22,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:22,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:22,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:22,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:22,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:22,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:22,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:23,115 INFO L124 PetriNetUnfolderBase]: 1783/2410 cut-off events. [2024-11-20 09:34:23,115 INFO L125 PetriNetUnfolderBase]: For 6621/6625 co-relation queries the response was YES. [2024-11-20 09:34:23,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 2410 events. 1783/2410 cut-off events. For 6621/6625 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9887 event pairs, 285 based on Foata normal form. 65/2407 useless extension candidates. Maximal degree in co-relation 4719. Up to 1013 conditions per place. [2024-11-20 09:34:23,133 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-20 09:34:23,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 104 transitions, 811 flow [2024-11-20 09:34:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-20 09:34:23,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-20 09:34:23,135 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 214 flow. Second operand 5 states and 108 transitions. [2024-11-20 09:34:23,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 104 transitions, 811 flow [2024-11-20 09:34:23,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 104 transitions, 786 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:23,143 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 260 flow [2024-11-20 09:34:23,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-20 09:34:23,145 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-20 09:34:23,145 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 260 flow [2024-11-20 09:34:23,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:23,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:23,146 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, 1, 1, 1] [2024-11-20 09:34:23,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:34:23,146 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 2 more)] === [2024-11-20 09:34:23,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:23,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1053690586, now seen corresponding path program 1 times [2024-11-20 09:34:23,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:23,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814529987] [2024-11-20 09:34:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:23,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:23,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814529987] [2024-11-20 09:34:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814529987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20935020] [2024-11-20 09:34:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:23,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:23,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:23,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:23,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:23,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:23,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:23,544 INFO L124 PetriNetUnfolderBase]: 1750/2365 cut-off events. [2024-11-20 09:34:23,545 INFO L125 PetriNetUnfolderBase]: For 7039/7043 co-relation queries the response was YES. [2024-11-20 09:34:23,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9958 conditions, 2365 events. 1750/2365 cut-off events. For 7039/7043 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9364 event pairs, 71 based on Foata normal form. 34/2355 useless extension candidates. Maximal degree in co-relation 6246. Up to 983 conditions per place. [2024-11-20 09:34:23,565 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 93 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-11-20 09:34:23,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 868 flow [2024-11-20 09:34:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-20 09:34:23,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-20 09:34:23,567 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 260 flow. Second operand 5 states and 106 transitions. [2024-11-20 09:34:23,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 868 flow [2024-11-20 09:34:23,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 868 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:34:23,576 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 323 flow [2024-11-20 09:34:23,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-20 09:34:23,577 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-20 09:34:23,577 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 323 flow [2024-11-20 09:34:23,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:23,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:23,578 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, 1, 1, 1] [2024-11-20 09:34:23,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:34:23,578 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 2 more)] === [2024-11-20 09:34:23,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1571138517, now seen corresponding path program 2 times [2024-11-20 09:34:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:23,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572621173] [2024-11-20 09:34:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:23,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:23,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572621173] [2024-11-20 09:34:23,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572621173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:23,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:23,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:23,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370753400] [2024-11-20 09:34:23,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:23,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:23,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:23,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:23,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:23,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:23,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:23,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:23,927 INFO L124 PetriNetUnfolderBase]: 1577/2122 cut-off events. [2024-11-20 09:34:23,928 INFO L125 PetriNetUnfolderBase]: For 7106/7110 co-relation queries the response was YES. [2024-11-20 09:34:23,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9531 conditions, 2122 events. 1577/2122 cut-off events. For 7106/7110 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8097 event pairs, 91 based on Foata normal form. 32/2110 useless extension candidates. Maximal degree in co-relation 5995. Up to 864 conditions per place. [2024-11-20 09:34:23,953 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 88 selfloop transitions, 9 changer transitions 4/106 dead transitions. [2024-11-20 09:34:23,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 877 flow [2024-11-20 09:34:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-20 09:34:23,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-20 09:34:23,955 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 323 flow. Second operand 5 states and 106 transitions. [2024-11-20 09:34:23,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 877 flow [2024-11-20 09:34:23,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 864 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:23,969 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 323 flow [2024-11-20 09:34:23,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-11-20 09:34:23,970 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2024-11-20 09:34:23,970 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 323 flow [2024-11-20 09:34:23,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:23,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:23,971 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, 1, 1, 1] [2024-11-20 09:34:23,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:34:23,971 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 2 more)] === [2024-11-20 09:34:23,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash -411746354, now seen corresponding path program 2 times [2024-11-20 09:34:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577742865] [2024-11-20 09:34:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:24,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577742865] [2024-11-20 09:34:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577742865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847029899] [2024-11-20 09:34:24,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:34:24,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:24,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:24,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:34:24,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:34:24,162 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:34:24,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:34:24,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 09:34:24,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:34:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:24,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:34:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:24,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847029899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:34:24,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:34:24,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-20 09:34:24,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488436311] [2024-11-20 09:34:24,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:34:24,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:34:24,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:24,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:34:24,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:34:24,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:24,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 323 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:24,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:24,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:24,772 INFO L124 PetriNetUnfolderBase]: 1515/2072 cut-off events. [2024-11-20 09:34:24,772 INFO L125 PetriNetUnfolderBase]: For 7337/7341 co-relation queries the response was YES. [2024-11-20 09:34:24,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9584 conditions, 2072 events. 1515/2072 cut-off events. For 7337/7341 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8388 event pairs, 258 based on Foata normal form. 63/2079 useless extension candidates. Maximal degree in co-relation 6094. Up to 1124 conditions per place. [2024-11-20 09:34:24,790 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-20 09:34:24,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 889 flow [2024-11-20 09:34:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-20 09:34:24,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-11-20 09:34:24,792 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 323 flow. Second operand 5 states and 103 transitions. [2024-11-20 09:34:24,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 889 flow [2024-11-20 09:34:24,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 880 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:34:24,800 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 364 flow [2024-11-20 09:34:24,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-20 09:34:24,801 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-11-20 09:34:24,801 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 364 flow [2024-11-20 09:34:24,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:24,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:24,802 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, 1, 1, 1] [2024-11-20 09:34:24,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 09:34:25,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:25,019 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 2 more)] === [2024-11-20 09:34:25,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:25,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1601501862, now seen corresponding path program 2 times [2024-11-20 09:34:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:25,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936741900] [2024-11-20 09:34:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:25,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936741900] [2024-11-20 09:34:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936741900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:34:25,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:34:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:34:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114884338] [2024-11-20 09:34:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:34:25,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:34:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:34:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:34:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:34:25,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:34:25,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:25,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:34:25,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:34:25,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:34:25,383 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-11-20 09:34:25,383 INFO L125 PetriNetUnfolderBase]: For 7044/7044 co-relation queries the response was YES. [2024-11-20 09:34:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9813 conditions, 1987 events. 1447/1987 cut-off events. For 7044/7044 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8188 event pairs, 375 based on Foata normal form. 68/2031 useless extension candidates. Maximal degree in co-relation 8653. Up to 1150 conditions per place. [2024-11-20 09:34:25,404 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-20 09:34:25,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 1094 flow [2024-11-20 09:34:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:34:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:34:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-20 09:34:25,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-11-20 09:34:25,405 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 364 flow. Second operand 5 states and 111 transitions. [2024-11-20 09:34:25,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 1094 flow [2024-11-20 09:34:25,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1036 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-20 09:34:25,417 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 401 flow [2024-11-20 09:34:25,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-20 09:34:25,419 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-20 09:34:25,419 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 401 flow [2024-11-20 09:34:25,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:34:25,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:34:25,419 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, 1, 1, 1, 1] [2024-11-20 09:34:25,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:34:25,419 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 2 more)] === [2024-11-20 09:34:25,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:34:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1377689087, now seen corresponding path program 1 times [2024-11-20 09:34:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:34:25,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230318844] [2024-11-20 09:34:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:34:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:34:25,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:34:25,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230318844] [2024-11-20 09:34:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230318844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:34:25,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321060189] [2024-11-20 09:34:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:34:25,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:34:25,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:34:25,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:34:25,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:34:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:34:26,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:34:26,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:24,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321060189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:35:47,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:35:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-20 09:35:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293188014] [2024-11-20 09:35:47,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:35:47,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 09:35:47,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 09:35:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=128, Unknown=10, NotChecked=0, Total=182 [2024-11-20 09:35:47,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 09:35:47,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 401 flow. Second operand has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:47,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:47,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 09:35:47,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:50,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []