./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-exp2x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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-exp2x3.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 f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:04:56,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:04:56,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:04:56,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:04:56,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:04:56,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:04:56,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:04:56,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:04:56,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:04:56,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:04:56,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:04:56,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:04:56,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:04:56,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:04:56,504 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:04:56,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:04:56,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:04:56,505 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:04:56,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:04:56,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:04:56,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:04:56,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:04:56,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:04:56,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:04:56,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:04:56,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:04:56,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:04:56,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:04:56,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:04:56,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:04:56,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:04:56,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:04:56,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:04:56,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:04:56,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:04:56,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:04:56,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:04:56,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:04:56,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:04:56,512 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:04:56,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:04:56,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:04:56,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 [2024-10-13 07:04:56,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:04:56,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:04:56,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:04:56,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:04:56,817 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:04:56,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2024-10-13 07:04:58,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:04:58,473 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:04:58,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2024-10-13 07:04:58,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1963e0ab5/2b9aa30fa41647b6bbb1b38944583268/FLAG7d86120ae [2024-10-13 07:04:58,839 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1963e0ab5/2b9aa30fa41647b6bbb1b38944583268 [2024-10-13 07:04:58,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:04:58,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:04:58,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:04:58,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:04:58,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:04:58,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:58" (1/1) ... [2024-10-13 07:04:58,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280fd1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:58, skipping insertion in model container [2024-10-13 07:04:58,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:58" (1/1) ... [2024-10-13 07:04:58,882 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:04:59,087 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-10-13 07:04:59,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:04:59,099 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:04:59,116 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-10-13 07:04:59,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:04:59,133 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:04:59,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59 WrapperNode [2024-10-13 07:04:59,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:04:59,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:04:59,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:04:59,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:04:59,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,166 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-10-13 07:04:59,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:04:59,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:04:59,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:04:59,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:04:59,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,194 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 07:04:59,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,209 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:04:59,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:04:59,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:04:59,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:04:59,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (1/1) ... [2024-10-13 07:04:59,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:04:59,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:04:59,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:04:59,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:04:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:04:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:04:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:04:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:04:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:04:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:04:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:04:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 07:04:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 07:04:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:04:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:04:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:04:59,306 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:04:59,411 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:04:59,413 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:04:59,651 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:04:59,654 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:04:59,853 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:04:59,854 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 07:04:59,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:59 BoogieIcfgContainer [2024-10-13 07:04:59,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:04:59,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:04:59,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:04:59,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:04:59,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:04:58" (1/3) ... [2024-10-13 07:04:59,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34560674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:59, skipping insertion in model container [2024-10-13 07:04:59,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:59" (2/3) ... [2024-10-13 07:04:59,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34560674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:59, skipping insertion in model container [2024-10-13 07:04:59,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:59" (3/3) ... [2024-10-13 07:04:59,863 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2024-10-13 07:04:59,880 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:04:59,880 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:04:59,881 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:04:59,933 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 07:04:59,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 92 flow [2024-10-13 07:04:59,994 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-13 07:04:59,994 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:05:00,001 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. [2024-10-13 07:05:00,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 32 transitions, 92 flow [2024-10-13 07:05:00,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 78 flow [2024-10-13 07:05:00,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:05:00,027 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;@5a57537d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:05:00,028 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 07:05:00,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:05:00,041 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-10-13 07:05:00,041 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:05:00,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:00,042 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] [2024-10-13 07:05:00,045 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)] === [2024-10-13 07:05:00,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:00,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1127709573, now seen corresponding path program 1 times [2024-10-13 07:05:00,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:00,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403238354] [2024-10-13 07:05:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:00,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:00,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403238354] [2024-10-13 07:05:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403238354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:00,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:00,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:05:00,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848275186] [2024-10-13 07:05:00,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:00,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:05:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:05:00,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:05:00,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:00,626 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) [2024-10-13 07:05:00,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:00,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:00,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:01,017 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-10-13 07:05:01,017 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-13 07:05:01,027 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 5609 event pairs, 123 based on Foata normal form. 1/994 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-10-13 07:05:01,044 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-10-13 07:05:01,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-10-13 07:05:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:05:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:05:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-10-13 07:05:01,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-13 07:05:01,060 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 78 flow. Second operand 3 states and 69 transitions. [2024-10-13 07:05:01,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-10-13 07:05:01,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 07:05:01,070 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-10-13 07:05:01,072 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} [2024-10-13 07:05:01,078 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-10-13 07:05:01,079 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-10-13 07:05:01,080 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) [2024-10-13 07:05:01,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:01,081 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] [2024-10-13 07:05:01,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:05:01,081 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)] === [2024-10-13 07:05:01,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1908970290, now seen corresponding path program 1 times [2024-10-13 07:05:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:01,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089471996] [2024-10-13 07:05:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:01,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089471996] [2024-10-13 07:05:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089471996] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:01,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:05:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881279425] [2024-10-13 07:05:01,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:01,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:05:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:01,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:05:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:05:01,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:01,278 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) [2024-10-13 07:05:01,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:01,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:01,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:01,613 INFO L124 PetriNetUnfolderBase]: 1587/2032 cut-off events. [2024-10-13 07:05:01,613 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-10-13 07:05:01,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 2032 events. 1587/2032 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6997 event pairs, 112 based on Foata normal form. 34/2058 useless extension candidates. Maximal degree in co-relation 1261. Up to 839 conditions per place. [2024-10-13 07:05:01,627 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-10-13 07:05:01,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-10-13 07:05:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-10-13 07:05:01,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-13 07:05:01,630 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 115 transitions. [2024-10-13 07:05:01,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-10-13 07:05:01,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:05:01,633 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-10-13 07:05:01,633 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} [2024-10-13 07:05:01,634 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-10-13 07:05:01,634 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-10-13 07:05:01,634 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) [2024-10-13 07:05:01,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:01,635 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] [2024-10-13 07:05:01,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:05:01,635 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)] === [2024-10-13 07:05:01,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1256719023, now seen corresponding path program 1 times [2024-10-13 07:05:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:01,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664003999] [2024-10-13 07:05:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:01,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:01,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664003999] [2024-10-13 07:05:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664003999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:01,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:01,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:05:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717142544] [2024-10-13 07:05:01,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:01,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:05:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:05:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:05:01,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:01,782 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) [2024-10-13 07:05:01,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:01,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:01,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:02,075 INFO L124 PetriNetUnfolderBase]: 1541/1986 cut-off events. [2024-10-13 07:05:02,075 INFO L125 PetriNetUnfolderBase]: For 1762/1762 co-relation queries the response was YES. [2024-10-13 07:05:02,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 1986 events. 1541/1986 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6970 event pairs, 94 based on Foata normal form. 46/2024 useless extension candidates. Maximal degree in co-relation 2813. Up to 810 conditions per place. [2024-10-13 07:05:02,087 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-10-13 07:05:02,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 412 flow [2024-10-13 07:05:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-13 07:05:02,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-10-13 07:05:02,092 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 113 transitions. [2024-10-13 07:05:02,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 412 flow [2024-10-13 07:05:02,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:05:02,101 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 169 flow [2024-10-13 07:05:02,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-10-13 07:05:02,102 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-10-13 07:05:02,103 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 169 flow [2024-10-13 07:05:02,103 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) [2024-10-13 07:05:02,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:02,103 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] [2024-10-13 07:05:02,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:05:02,104 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)] === [2024-10-13 07:05:02,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:02,105 INFO L85 PathProgramCache]: Analyzing trace with hash -52939408, now seen corresponding path program 2 times [2024-10-13 07:05:02,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:02,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032947522] [2024-10-13 07:05:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:02,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:02,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032947522] [2024-10-13 07:05:02,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032947522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:05:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855506689] [2024-10-13 07:05:02,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:05:02,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:02,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:05:02,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:05:02,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:05:02,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:05:02,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:05:02,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 07:05:02,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:05:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:02,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:05:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:02,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855506689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:05:02,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:05:02,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-13 07:05:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771778876] [2024-10-13 07:05:02,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:05:02,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:05:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:05:02,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:05:02,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:02,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:02,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:02,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:02,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:02,934 INFO L124 PetriNetUnfolderBase]: 1458/1913 cut-off events. [2024-10-13 07:05:02,934 INFO L125 PetriNetUnfolderBase]: For 2572/2572 co-relation queries the response was YES. [2024-10-13 07:05:02,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6121 conditions, 1913 events. 1458/1913 cut-off events. For 2572/2572 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7156 event pairs, 343 based on Foata normal form. 61/1942 useless extension candidates. Maximal degree in co-relation 2564. Up to 1022 conditions per place. [2024-10-13 07:05:02,948 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-10-13 07:05:02,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 444 flow [2024-10-13 07:05:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-10-13 07:05:02,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-10-13 07:05:02,951 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 169 flow. Second operand 5 states and 114 transitions. [2024-10-13 07:05:02,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 78 transitions, 444 flow [2024-10-13 07:05:02,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:05:02,956 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 212 flow [2024-10-13 07:05:02,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-10-13 07:05:02,957 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-10-13 07:05:02,957 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 212 flow [2024-10-13 07:05:02,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:02,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:02,958 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] [2024-10-13 07:05:02,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:05:03,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:03,159 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)] === [2024-10-13 07:05:03,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash -430053862, now seen corresponding path program 1 times [2024-10-13 07:05:03,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:03,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922067405] [2024-10-13 07:05:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:03,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:03,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:03,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922067405] [2024-10-13 07:05:03,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922067405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:05:03,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490695264] [2024-10-13 07:05:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:03,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:03,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:05:03,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:05:03,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:05:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:03,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 07:05:03,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:05:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:03,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:05:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490695264] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:05:03,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:05:03,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-13 07:05:03,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088172437] [2024-10-13 07:05:03,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:05:03,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:05:03,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:05:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:05:03,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:03,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:03,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:03,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:03,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:03,886 INFO L124 PetriNetUnfolderBase]: 1783/2410 cut-off events. [2024-10-13 07:05:03,886 INFO L125 PetriNetUnfolderBase]: For 6366/6370 co-relation queries the response was YES. [2024-10-13 07:05:03,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 2410 events. 1783/2410 cut-off events. For 6366/6370 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9869 event pairs, 285 based on Foata normal form. 65/2423 useless extension candidates. Maximal degree in co-relation 5382. Up to 1013 conditions per place. [2024-10-13 07:05:03,908 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-10-13 07:05:03,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 104 transitions, 803 flow [2024-10-13 07:05:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-13 07:05:03,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-13 07:05:03,910 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 212 flow. Second operand 5 states and 108 transitions. [2024-10-13 07:05:03,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 104 transitions, 803 flow [2024-10-13 07:05:03,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 104 transitions, 778 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-13 07:05:03,920 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 258 flow [2024-10-13 07:05:03,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, 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=258, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-10-13 07:05:03,922 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-10-13 07:05:03,922 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 258 flow [2024-10-13 07:05:03,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:03,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:03,922 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] [2024-10-13 07:05:03,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:05:04,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:04,123 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)] === [2024-10-13 07:05:04,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:04,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1628657833, now seen corresponding path program 1 times [2024-10-13 07:05:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:04,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142429880] [2024-10-13 07:05:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:04,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:04,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:04,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142429880] [2024-10-13 07:05:04,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142429880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:04,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:04,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:05:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94933835] [2024-10-13 07:05:04,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:04,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:05:04,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:05:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:05:04,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:04,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 258 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) [2024-10-13 07:05:04,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:04,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:04,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:04,503 INFO L124 PetriNetUnfolderBase]: 1750/2365 cut-off events. [2024-10-13 07:05:04,503 INFO L125 PetriNetUnfolderBase]: For 6891/6895 co-relation queries the response was YES. [2024-10-13 07:05:04,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9906 conditions, 2365 events. 1750/2365 cut-off events. For 6891/6895 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 9374 event pairs, 71 based on Foata normal form. 34/2371 useless extension candidates. Maximal degree in co-relation 6194. Up to 983 conditions per place. [2024-10-13 07:05:04,532 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 93 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-10-13 07:05:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 860 flow [2024-10-13 07:05:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-10-13 07:05:04,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-13 07:05:04,534 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 258 flow. Second operand 5 states and 106 transitions. [2024-10-13 07:05:04,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 860 flow [2024-10-13 07:05:04,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 860 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:05:04,545 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 321 flow [2024-10-13 07:05:04,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, 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=321, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-10-13 07:05:04,547 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-10-13 07:05:04,548 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 321 flow [2024-10-13 07:05:04,548 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) [2024-10-13 07:05:04,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:04,548 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] [2024-10-13 07:05:04,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:05:04,549 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)] === [2024-10-13 07:05:04,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1879692099, now seen corresponding path program 2 times [2024-10-13 07:05:04,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:04,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268947080] [2024-10-13 07:05:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:04,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:04,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:04,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268947080] [2024-10-13 07:05:04,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268947080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:04,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:04,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:05:04,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389985827] [2024-10-13 07:05:04,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:04,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:05:04,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:05:04,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:05:04,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:04,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 321 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) [2024-10-13 07:05:04,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:04,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:04,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:04,935 INFO L124 PetriNetUnfolderBase]: 1688/2315 cut-off events. [2024-10-13 07:05:04,935 INFO L125 PetriNetUnfolderBase]: For 7515/7519 co-relation queries the response was YES. [2024-10-13 07:05:04,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10331 conditions, 2315 events. 1688/2315 cut-off events. For 7515/7519 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9652 event pairs, 258 based on Foata normal form. 63/2338 useless extension candidates. Maximal degree in co-relation 6469. Up to 1365 conditions per place. [2024-10-13 07:05:04,956 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2024-10-13 07:05:04,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 891 flow [2024-10-13 07:05:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-10-13 07:05:04,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-10-13 07:05:04,958 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 321 flow. Second operand 5 states and 103 transitions. [2024-10-13 07:05:04,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 891 flow [2024-10-13 07:05:04,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 876 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 07:05:04,967 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 360 flow [2024-10-13 07:05:04,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-10-13 07:05:04,968 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-10-13 07:05:04,968 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 360 flow [2024-10-13 07:05:04,968 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) [2024-10-13 07:05:04,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:04,968 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] [2024-10-13 07:05:04,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:05:04,969 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)] === [2024-10-13 07:05:04,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash 689519126, now seen corresponding path program 2 times [2024-10-13 07:05:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430684832] [2024-10-13 07:05:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:04,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:05,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:05,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430684832] [2024-10-13 07:05:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430684832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:05,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:05,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:05:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134255795] [2024-10-13 07:05:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:05,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:05:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:05:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:05:05,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:05,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 360 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) [2024-10-13 07:05:05,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:05,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:05,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:05,365 INFO L124 PetriNetUnfolderBase]: 1515/2060 cut-off events. [2024-10-13 07:05:05,365 INFO L125 PetriNetUnfolderBase]: For 7275/7279 co-relation queries the response was YES. [2024-10-13 07:05:05,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9729 conditions, 2060 events. 1515/2060 cut-off events. For 7275/7279 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7982 event pairs, 75 based on Foata normal form. 32/2064 useless extension candidates. Maximal degree in co-relation 8433. Up to 864 conditions per place. [2024-10-13 07:05:05,385 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 9 changer transitions 4/109 dead transitions. [2024-10-13 07:05:05,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 918 flow [2024-10-13 07:05:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-10-13 07:05:05,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-13 07:05:05,387 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 360 flow. Second operand 5 states and 106 transitions. [2024-10-13 07:05:05,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 918 flow [2024-10-13 07:05:05,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 109 transitions, 898 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-13 07:05:05,397 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 355 flow [2024-10-13 07:05:05,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-10-13 07:05:05,398 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2024-10-13 07:05:05,399 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 355 flow [2024-10-13 07:05:05,399 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) [2024-10-13 07:05:05,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:05,399 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] [2024-10-13 07:05:05,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 07:05:05,400 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)] === [2024-10-13 07:05:05,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash 894098943, now seen corresponding path program 2 times [2024-10-13 07:05:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:05,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902679568] [2024-10-13 07:05:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:05,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902679568] [2024-10-13 07:05:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902679568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:05:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976390895] [2024-10-13 07:05:05,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:05:05,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:05,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:05:05,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:05:05,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:05:05,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:05:05,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:05:05,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 07:05:05,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:05:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:05,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:05:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:05,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976390895] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:05:05,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:05:05,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-13 07:05:05,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703071079] [2024-10-13 07:05:05,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:05:05,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:05:05,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:05:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:05:05,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 07:05:05,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:05,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:05,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 07:05:05,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:06,001 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-10-13 07:05:06,001 INFO L125 PetriNetUnfolderBase]: For 7130/7154 co-relation queries the response was YES. [2024-10-13 07:05:06,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9563 conditions, 1987 events. 1447/1987 cut-off events. For 7130/7154 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8225 event pairs, 375 based on Foata normal form. 72/2043 useless extension candidates. Maximal degree in co-relation 8221. Up to 1150 conditions per place. [2024-10-13 07:05:06,022 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-10-13 07:05:06,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 1075 flow [2024-10-13 07:05:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:05:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:05:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-10-13 07:05:06,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-10-13 07:05:06,024 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 355 flow. Second operand 5 states and 111 transitions. [2024-10-13 07:05:06,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 1075 flow [2024-10-13 07:05:06,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1042 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-13 07:05:06,033 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 401 flow [2024-10-13 07:05:06,034 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} [2024-10-13 07:05:06,035 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-10-13 07:05:06,036 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 401 flow [2024-10-13 07:05:06,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:06,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:06,036 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] [2024-10-13 07:05:06,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 07:05:06,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:06,241 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)] === [2024-10-13 07:05:06,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -209821976, now seen corresponding path program 1 times [2024-10-13 07:05:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:06,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544331090] [2024-10-13 07:05:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:06,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544331090] [2024-10-13 07:05:06,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544331090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:05:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134680009] [2024-10-13 07:05:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:06,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:06,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:05:06,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:05:06,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:05:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:06,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 07:05:06,897 INFO L278 TraceCheckSpWp]: Computing forward predicates...