./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/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/popl20-difference-det.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 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:32:51,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:32:51,504 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:32:51,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:32:51,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:32:51,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:32:51,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:32:51,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:32:51,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:32:51,546 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:32:51,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:32:51,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:32:51,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:32:51,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:32:51,551 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:32:51,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:32:51,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:32:51,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:32:51,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:32:51,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:32:51,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:32:51,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:32:51,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:32:51,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:32:51,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:32:51,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:32:51,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:32:51,555 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:32:51,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:32:51,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:32:51,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:32:51,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:32:51,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:32:51,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:32:51,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:32:51,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:32:51,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:32:51,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:32:51,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:32:51,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:32:51,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:32:51,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:32:51,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-24 12:32:51,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:32:51,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:32:51,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:32:51,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:32:51,853 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:32:51,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-24 12:32:53,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:32:53,509 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:32:53,511 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-24 12:32:53,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23d87329/82c0eeccc4e94b0283108db2b048836b/FLAG8c4d508f5 [2024-10-24 12:32:53,899 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e23d87329/82c0eeccc4e94b0283108db2b048836b [2024-10-24 12:32:53,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:32:53,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:32:53,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:32:53,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:32:53,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:32:53,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:53" (1/1) ... [2024-10-24 12:32:53,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4725fdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:53, skipping insertion in model container [2024-10-24 12:32:53,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:53" (1/1) ... [2024-10-24 12:32:53,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:32:54,116 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/popl20-difference-det.wvr.c[2559,2572] [2024-10-24 12:32:54,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:32:54,133 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:32:54,158 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/popl20-difference-det.wvr.c[2559,2572] [2024-10-24 12:32:54,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:32:54,190 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:32:54,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54 WrapperNode [2024-10-24 12:32:54,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:32:54,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:32:54,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:32:54,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:32:54,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,227 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 101 [2024-10-24 12:32:54,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:32:54,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:32:54,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:32:54,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:32:54,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,258 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]. [2024-10-24 12:32:54,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:32:54,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:32:54,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:32:54,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:32:54,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (1/1) ... [2024-10-24 12:32:54,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:32:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:54,327 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) [2024-10-24 12:32:54,336 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 [2024-10-24 12:32:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:32:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:32:54,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:32:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:32:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:32:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:32:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:32:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 12:32:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 12:32:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:32:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:32:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:32:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:32:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:32:54,392 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:32:54,486 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:32:54,488 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:32:54,761 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:32:54,761 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:32:54,876 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:32:54,877 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 12:32:54,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:54 BoogieIcfgContainer [2024-10-24 12:32:54,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:32:54,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:32:54,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:32:54,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:32:54,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:32:53" (1/3) ... [2024-10-24 12:32:54,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac7349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:54, skipping insertion in model container [2024-10-24 12:32:54,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:54" (2/3) ... [2024-10-24 12:32:54,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac7349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:54, skipping insertion in model container [2024-10-24 12:32:54,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:54" (3/3) ... [2024-10-24 12:32:54,888 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-24 12:32:54,908 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:32:54,909 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:32:54,909 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:32:54,970 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-24 12:32:55,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-10-24 12:32:55,041 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-24 12:32:55,041 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 12:32:55,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-24 12:32:55,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-10-24 12:32:55,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-10-24 12:32:55,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:32:55,066 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;@5a146003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:32:55,066 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-24 12:32:55,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:32:55,080 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-24 12:32:55,080 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 12:32:55,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:55,081 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] [2024-10-24 12:32:55,082 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)] === [2024-10-24 12:32:55,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash 313037294, now seen corresponding path program 1 times [2024-10-24 12:32:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112188447] [2024-10-24 12:32:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:55,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:55,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112188447] [2024-10-24 12:32:55,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112188447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:55,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:55,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:32:55,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993194575] [2024-10-24 12:32:55,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:55,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:32:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:32:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:32:55,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 12:32:55,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-24 12:32:55,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:55,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 12:32:55,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:55,878 INFO L124 PetriNetUnfolderBase]: 3331/4557 cut-off events. [2024-10-24 12:32:55,879 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-10-24 12:32:55,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9300 conditions, 4557 events. 3331/4557 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19746 event pairs, 587 based on Foata normal form. 1/4545 useless extension candidates. Maximal degree in co-relation 8250. Up to 3534 conditions per place. [2024-10-24 12:32:55,914 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-10-24 12:32:55,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-10-24 12:32:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:32:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:32:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-24 12:32:55,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-24 12:32:55,926 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-10-24 12:32:55,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-10-24 12:32:55,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-24 12:32:55,939 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-10-24 12:32:55,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-10-24 12:32:55,943 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-10-24 12:32:55,945 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-10-24 12:32:55,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-24 12:32:55,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:55,946 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, 1] [2024-10-24 12:32:55,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:32:55,947 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)] === [2024-10-24 12:32:55,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash -189752120, now seen corresponding path program 1 times [2024-10-24 12:32:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:55,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859659001] [2024-10-24 12:32:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:56,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859659001] [2024-10-24 12:32:56,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859659001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:56,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:56,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:56,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752306044] [2024-10-24 12:32:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:56,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:56,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:56,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 12:32:56,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:32:56,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:56,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 12:32:56,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:57,110 INFO L124 PetriNetUnfolderBase]: 7556/10174 cut-off events. [2024-10-24 12:32:57,112 INFO L125 PetriNetUnfolderBase]: For 1714/1726 co-relation queries the response was YES. [2024-10-24 12:32:57,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22978 conditions, 10174 events. 7556/10174 cut-off events. For 1714/1726 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 51462 event pairs, 2226 based on Foata normal form. 0/9634 useless extension candidates. Maximal degree in co-relation 4501. Up to 5136 conditions per place. [2024-10-24 12:32:57,179 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 90 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-10-24 12:32:57,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 104 transitions, 498 flow [2024-10-24 12:32:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-24 12:32:57,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-10-24 12:32:57,182 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 127 transitions. [2024-10-24 12:32:57,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 104 transitions, 498 flow [2024-10-24 12:32:57,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 104 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:32:57,185 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-10-24 12:32:57,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-10-24 12:32:57,186 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-10-24 12:32:57,186 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-10-24 12:32:57,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:32:57,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:57,187 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, 1] [2024-10-24 12:32:57,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:32:57,187 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)] === [2024-10-24 12:32:57,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -67583410, now seen corresponding path program 2 times [2024-10-24 12:32:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:57,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347669958] [2024-10-24 12:32:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347669958] [2024-10-24 12:32:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347669958] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:32:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994878819] [2024-10-24 12:32:57,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:32:57,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:57,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:57,275 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) [2024-10-24 12:32:57,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:32:57,341 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:32:57,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:32:57,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 12:32:57,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:32:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:57,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:32:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:57,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994878819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:32:57,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:32:57,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-24 12:32:57,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529373152] [2024-10-24 12:32:57,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:32:57,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:32:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:32:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:32:57,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 12:32:57,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:57,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:57,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 12:32:57,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:58,955 INFO L124 PetriNetUnfolderBase]: 13211/17330 cut-off events. [2024-10-24 12:32:58,955 INFO L125 PetriNetUnfolderBase]: For 6127/6127 co-relation queries the response was YES. [2024-10-24 12:32:58,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45000 conditions, 17330 events. 13211/17330 cut-off events. For 6127/6127 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 87727 event pairs, 978 based on Foata normal form. 280/17608 useless extension candidates. Maximal degree in co-relation 24868. Up to 3827 conditions per place. [2024-10-24 12:32:59,022 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 234 selfloop transitions, 36 changer transitions 0/273 dead transitions. [2024-10-24 12:32:59,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 273 transitions, 1371 flow [2024-10-24 12:32:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:32:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:32:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 340 transitions. [2024-10-24 12:32:59,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-10-24 12:32:59,027 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 340 transitions. [2024-10-24 12:32:59,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 273 transitions, 1371 flow [2024-10-24 12:32:59,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 273 transitions, 1371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:32:59,035 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 405 flow [2024-10-24 12:32:59,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=405, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2024-10-24 12:32:59,036 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-10-24 12:32:59,036 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 405 flow [2024-10-24 12:32:59,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:59,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:59,037 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, 1] [2024-10-24 12:32:59,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:32:59,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:59,241 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)] === [2024-10-24 12:32:59,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1569690990, now seen corresponding path program 3 times [2024-10-24 12:32:59,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:59,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321475214] [2024-10-24 12:32:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:59,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:59,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321475214] [2024-10-24 12:32:59,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321475214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:59,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:59,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:59,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822109658] [2024-10-24 12:32:59,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:59,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:59,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:59,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 12:32:59,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:32:59,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:59,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 12:32:59,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:00,803 INFO L124 PetriNetUnfolderBase]: 16615/22403 cut-off events. [2024-10-24 12:33:00,803 INFO L125 PetriNetUnfolderBase]: For 29608/29656 co-relation queries the response was YES. [2024-10-24 12:33:00,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69000 conditions, 22403 events. 16615/22403 cut-off events. For 29608/29656 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 122884 event pairs, 4127 based on Foata normal form. 88/22376 useless extension candidates. Maximal degree in co-relation 53173. Up to 9177 conditions per place. [2024-10-24 12:33:00,975 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 123 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2024-10-24 12:33:00,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1021 flow [2024-10-24 12:33:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:33:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:33:00,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-24 12:33:00,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-24 12:33:00,977 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 405 flow. Second operand 5 states and 126 transitions. [2024-10-24 12:33:00,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1021 flow [2024-10-24 12:33:01,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 153 transitions, 974 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-10-24 12:33:01,225 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 504 flow [2024-10-24 12:33:01,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2024-10-24 12:33:01,226 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-10-24 12:33:01,227 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 504 flow [2024-10-24 12:33:01,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:01,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:01,227 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, 1] [2024-10-24 12:33:01,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:33:01,228 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)] === [2024-10-24 12:33:01,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash -974718849, now seen corresponding path program 1 times [2024-10-24 12:33:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:01,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961662810] [2024-10-24 12:33:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:01,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:01,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961662810] [2024-10-24 12:33:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961662810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:01,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:01,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:33:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706067111] [2024-10-24 12:33:01,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:01,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:33:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:33:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:33:01,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 12:33:01,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-24 12:33:01,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:01,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 12:33:01,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:02,232 INFO L124 PetriNetUnfolderBase]: 11059/15265 cut-off events. [2024-10-24 12:33:02,232 INFO L125 PetriNetUnfolderBase]: For 28499/28750 co-relation queries the response was YES. [2024-10-24 12:33:02,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48884 conditions, 15265 events. 11059/15265 cut-off events. For 28499/28750 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 83395 event pairs, 3789 based on Foata normal form. 511/15595 useless extension candidates. Maximal degree in co-relation 43493. Up to 9103 conditions per place. [2024-10-24 12:33:02,331 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 94 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-10-24 12:33:02,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 111 transitions, 837 flow [2024-10-24 12:33:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:33:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:33:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-24 12:33:02,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-24 12:33:02,333 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 504 flow. Second operand 3 states and 82 transitions. [2024-10-24 12:33:02,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 111 transitions, 837 flow [2024-10-24 12:33:02,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 800 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-24 12:33:02,448 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 492 flow [2024-10-24 12:33:02,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2024-10-24 12:33:02,449 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-10-24 12:33:02,449 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 492 flow [2024-10-24 12:33:02,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-24 12:33:02,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:02,450 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, 1] [2024-10-24 12:33:02,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:33:02,450 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)] === [2024-10-24 12:33:02,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash 624714587, now seen corresponding path program 1 times [2024-10-24 12:33:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412061416] [2024-10-24 12:33:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:02,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:02,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412061416] [2024-10-24 12:33:02,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412061416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:02,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:02,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:33:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708393482] [2024-10-24 12:33:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:02,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:33:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:33:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:33:02,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 12:33:02,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-24 12:33:02,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:02,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 12:33:02,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:03,440 INFO L124 PetriNetUnfolderBase]: 9006/12572 cut-off events. [2024-10-24 12:33:03,441 INFO L125 PetriNetUnfolderBase]: For 20937/21092 co-relation queries the response was YES. [2024-10-24 12:33:03,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40116 conditions, 12572 events. 9006/12572 cut-off events. For 20937/21092 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 67226 event pairs, 2619 based on Foata normal form. 309/12754 useless extension candidates. Maximal degree in co-relation 36198. Up to 7318 conditions per place. [2024-10-24 12:33:03,552 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 92 selfloop transitions, 3 changer transitions 3/112 dead transitions. [2024-10-24 12:33:03,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 826 flow [2024-10-24 12:33:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:33:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:33:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-24 12:33:03,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-24 12:33:03,554 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 492 flow. Second operand 3 states and 78 transitions. [2024-10-24 12:33:03,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 826 flow [2024-10-24 12:33:03,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:33:03,614 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 472 flow [2024-10-24 12:33:03,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-10-24 12:33:03,617 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-10-24 12:33:03,618 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 472 flow [2024-10-24 12:33:03,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-24 12:33:03,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:03,618 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, 1] [2024-10-24 12:33:03,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:33:03,618 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)] === [2024-10-24 12:33:03,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash -462380530, now seen corresponding path program 1 times [2024-10-24 12:33:03,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053630430] [2024-10-24 12:33:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:03,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:03,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053630430] [2024-10-24 12:33:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053630430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:03,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:33:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625259231] [2024-10-24 12:33:03,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:03,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:33:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:33:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:33:03,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 12:33:03,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 472 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:03,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:03,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 12:33:03,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:04,599 INFO L124 PetriNetUnfolderBase]: 10466/14189 cut-off events. [2024-10-24 12:33:04,599 INFO L125 PetriNetUnfolderBase]: For 20749/20779 co-relation queries the response was YES. [2024-10-24 12:33:04,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46152 conditions, 14189 events. 10466/14189 cut-off events. For 20749/20779 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 72821 event pairs, 3716 based on Foata normal form. 36/14221 useless extension candidates. Maximal degree in co-relation 41880. Up to 7734 conditions per place. [2024-10-24 12:33:04,712 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 103 selfloop transitions, 12 changer transitions 16/137 dead transitions. [2024-10-24 12:33:04,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 944 flow [2024-10-24 12:33:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:33:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:33:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-24 12:33:04,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-24 12:33:04,714 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 472 flow. Second operand 5 states and 128 transitions. [2024-10-24 12:33:04,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 944 flow [2024-10-24 12:33:04,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 137 transitions, 934 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 12:33:04,776 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 499 flow [2024-10-24 12:33:04,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-10-24 12:33:04,777 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-10-24 12:33:04,777 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 499 flow [2024-10-24 12:33:04,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:04,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:04,778 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, 1] [2024-10-24 12:33:04,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:33:04,778 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)] === [2024-10-24 12:33:04,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash -960797022, now seen corresponding path program 2 times [2024-10-24 12:33:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:04,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810834223] [2024-10-24 12:33:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810834223] [2024-10-24 12:33:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810834223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667436696] [2024-10-24 12:33:04,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:33:04,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:04,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:04,841 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) [2024-10-24 12:33:04,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:33:04,898 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:33:04,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:04,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 12:33:04,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:04,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:04,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667436696] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:04,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:04,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-24 12:33:04,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200794206] [2024-10-24 12:33:04,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:04,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:33:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:33:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:33:04,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 12:33:04,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 499 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:04,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:04,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 12:33:04,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:06,623 INFO L124 PetriNetUnfolderBase]: 14081/18750 cut-off events. [2024-10-24 12:33:06,624 INFO L125 PetriNetUnfolderBase]: For 32587/32587 co-relation queries the response was YES. [2024-10-24 12:33:06,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62174 conditions, 18750 events. 14081/18750 cut-off events. For 32587/32587 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 93939 event pairs, 715 based on Foata normal form. 174/18923 useless extension candidates. Maximal degree in co-relation 54261. Up to 3374 conditions per place. [2024-10-24 12:33:06,795 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 222 selfloop transitions, 71 changer transitions 2/298 dead transitions. [2024-10-24 12:33:06,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 298 transitions, 2020 flow [2024-10-24 12:33:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:33:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:33:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 320 transitions. [2024-10-24 12:33:06,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-24 12:33:06,797 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 499 flow. Second operand 14 states and 320 transitions. [2024-10-24 12:33:06,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 298 transitions, 2020 flow [2024-10-24 12:33:07,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 298 transitions, 1962 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-24 12:33:07,044 INFO L231 Difference]: Finished difference. Result has 94 places, 123 transitions, 1015 flow [2024-10-24 12:33:07,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1015, PETRI_PLACES=94, PETRI_TRANSITIONS=123} [2024-10-24 12:33:07,044 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-10-24 12:33:07,045 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 123 transitions, 1015 flow [2024-10-24 12:33:07,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:07,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:07,045 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, 1] [2024-10-24 12:33:07,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:33:07,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-24 12:33:07,246 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)] === [2024-10-24 12:33:07,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash 555086900, now seen corresponding path program 4 times [2024-10-24 12:33:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:07,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557120082] [2024-10-24 12:33:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:07,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557120082] [2024-10-24 12:33:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557120082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:07,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:07,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:33:07,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461029826] [2024-10-24 12:33:07,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:07,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:33:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:33:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:33:07,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 12:33:07,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 123 transitions, 1015 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:07,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:07,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 12:33:07,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:08,855 INFO L124 PetriNetUnfolderBase]: 13817/18486 cut-off events. [2024-10-24 12:33:08,856 INFO L125 PetriNetUnfolderBase]: For 48369/48369 co-relation queries the response was YES. [2024-10-24 12:33:08,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68045 conditions, 18486 events. 13817/18486 cut-off events. For 48369/48369 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 93367 event pairs, 5052 based on Foata normal form. 110/18583 useless extension candidates. Maximal degree in co-relation 61597. Up to 11240 conditions per place. [2024-10-24 12:33:09,001 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 138 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-10-24 12:33:09,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 171 transitions, 1541 flow [2024-10-24 12:33:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:33:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:33:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-10-24 12:33:09,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-10-24 12:33:09,003 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 1015 flow. Second operand 5 states and 124 transitions. [2024-10-24 12:33:09,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 171 transitions, 1541 flow [2024-10-24 12:33:09,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 1467 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-10-24 12:33:09,360 INFO L231 Difference]: Finished difference. Result has 95 places, 122 transitions, 1003 flow [2024-10-24 12:33:09,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1003, PETRI_PLACES=95, PETRI_TRANSITIONS=122} [2024-10-24 12:33:09,361 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-10-24 12:33:09,361 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 122 transitions, 1003 flow [2024-10-24 12:33:09,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:09,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:09,362 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, 1] [2024-10-24 12:33:09,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:33:09,362 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)] === [2024-10-24 12:33:09,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1478788968, now seen corresponding path program 3 times [2024-10-24 12:33:09,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:09,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022456503] [2024-10-24 12:33:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022456503] [2024-10-24 12:33:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022456503] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:09,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:09,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:33:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550989909] [2024-10-24 12:33:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:09,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:33:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:09,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:33:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:33:09,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 12:33:09,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 122 transitions, 1003 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:09,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:09,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 12:33:09,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:10,610 INFO L124 PetriNetUnfolderBase]: 12918/17564 cut-off events. [2024-10-24 12:33:10,610 INFO L125 PetriNetUnfolderBase]: For 46295/46307 co-relation queries the response was YES. [2024-10-24 12:33:10,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64632 conditions, 17564 events. 12918/17564 cut-off events. For 46295/46307 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 93077 event pairs, 4387 based on Foata normal form. 44/17599 useless extension candidates. Maximal degree in co-relation 59203. Up to 9950 conditions per place. [2024-10-24 12:33:10,748 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 124 selfloop transitions, 31 changer transitions 2/175 dead transitions. [2024-10-24 12:33:10,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 175 transitions, 1576 flow [2024-10-24 12:33:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:33:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:33:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-10-24 12:33:10,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-24 12:33:10,750 INFO L175 Difference]: Start difference. First operand has 95 places, 122 transitions, 1003 flow. Second operand 5 states and 125 transitions. [2024-10-24 12:33:10,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 175 transitions, 1576 flow [2024-10-24 12:33:10,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 175 transitions, 1493 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 12:33:10,986 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1095 flow [2024-10-24 12:33:10,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1095, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2024-10-24 12:33:10,986 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-10-24 12:33:10,986 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1095 flow [2024-10-24 12:33:10,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:10,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:10,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:10,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:33:10,987 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:10,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:10,988 INFO L85 PathProgramCache]: Analyzing trace with hash 860222506, now seen corresponding path program 4 times [2024-10-24 12:33:10,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:10,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273264258] [2024-10-24 12:33:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:10,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273264258] [2024-10-24 12:33:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273264258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:11,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:11,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:33:11,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299692733] [2024-10-24 12:33:11,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:11,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:33:11,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:33:11,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:33:11,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 12:33:11,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:11,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:11,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 12:33:11,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:12,089 INFO L124 PetriNetUnfolderBase]: 14332/19181 cut-off events. [2024-10-24 12:33:12,089 INFO L125 PetriNetUnfolderBase]: For 50455/50479 co-relation queries the response was YES. [2024-10-24 12:33:12,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71861 conditions, 19181 events. 14332/19181 cut-off events. For 50455/50479 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 97804 event pairs, 5221 based on Foata normal form. 126/19306 useless extension candidates. Maximal degree in co-relation 68911. Up to 11469 conditions per place. [2024-10-24 12:33:12,222 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 150 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-10-24 12:33:12,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 193 transitions, 1734 flow [2024-10-24 12:33:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:33:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:33:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-24 12:33:12,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-24 12:33:12,223 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1095 flow. Second operand 6 states and 145 transitions. [2024-10-24 12:33:12,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 193 transitions, 1734 flow [2024-10-24 12:33:12,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 1681 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-24 12:33:12,427 INFO L231 Difference]: Finished difference. Result has 102 places, 131 transitions, 1181 flow [2024-10-24 12:33:12,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1181, PETRI_PLACES=102, PETRI_TRANSITIONS=131} [2024-10-24 12:33:12,428 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-10-24 12:33:12,428 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 131 transitions, 1181 flow [2024-10-24 12:33:12,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:12,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:12,429 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, 1] [2024-10-24 12:33:12,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:33:12,429 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:12,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:12,429 INFO L85 PathProgramCache]: Analyzing trace with hash 679948238, now seen corresponding path program 5 times [2024-10-24 12:33:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:12,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586248621] [2024-10-24 12:33:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:12,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:12,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586248621] [2024-10-24 12:33:12,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586248621] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052264986] [2024-10-24 12:33:12,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 12:33:12,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:12,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:12,509 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) [2024-10-24 12:33:12,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:33:12,569 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:33:12,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:12,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 12:33:12,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:12,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:12,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052264986] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:12,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:12,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-24 12:33:12,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455856843] [2024-10-24 12:33:12,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:12,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:33:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:33:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:33:12,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 12:33:12,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 131 transitions, 1181 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 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) [2024-10-24 12:33:12,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:12,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 12:33:12,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:14,300 INFO L124 PetriNetUnfolderBase]: 18317/24367 cut-off events. [2024-10-24 12:33:14,301 INFO L125 PetriNetUnfolderBase]: For 59890/59890 co-relation queries the response was YES. [2024-10-24 12:33:14,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91680 conditions, 24367 events. 18317/24367 cut-off events. For 59890/59890 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 127432 event pairs, 1500 based on Foata normal form. 143/24509 useless extension candidates. Maximal degree in co-relation 88368. Up to 4569 conditions per place. [2024-10-24 12:33:14,431 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 258 selfloop transitions, 84 changer transitions 0/345 dead transitions. [2024-10-24 12:33:14,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 345 transitions, 2754 flow [2024-10-24 12:33:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 12:33:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 12:33:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 357 transitions. [2024-10-24 12:33:14,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-10-24 12:33:14,433 INFO L175 Difference]: Start difference. First operand has 102 places, 131 transitions, 1181 flow. Second operand 15 states and 357 transitions. [2024-10-24 12:33:14,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 345 transitions, 2754 flow [2024-10-24 12:33:14,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 345 transitions, 2696 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 12:33:14,796 INFO L231 Difference]: Finished difference. Result has 120 places, 154 transitions, 1617 flow [2024-10-24 12:33:14,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1617, PETRI_PLACES=120, PETRI_TRANSITIONS=154} [2024-10-24 12:33:14,796 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-10-24 12:33:14,797 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 154 transitions, 1617 flow [2024-10-24 12:33:14,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 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) [2024-10-24 12:33:14,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:14,797 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, 1] [2024-10-24 12:33:14,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:33:15,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:15,002 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:15,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:15,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1357344238, now seen corresponding path program 5 times [2024-10-24 12:33:15,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:15,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118509763] [2024-10-24 12:33:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:15,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118509763] [2024-10-24 12:33:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118509763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:15,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:15,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:33:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731303310] [2024-10-24 12:33:15,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:15,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:33:15,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:33:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:33:15,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 12:33:15,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 154 transitions, 1617 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:15,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:15,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 12:33:15,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:17,097 INFO L124 PetriNetUnfolderBase]: 16716/22657 cut-off events. [2024-10-24 12:33:17,098 INFO L125 PetriNetUnfolderBase]: For 88287/88428 co-relation queries the response was YES. [2024-10-24 12:33:17,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91934 conditions, 22657 events. 16716/22657 cut-off events. For 88287/88428 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 124272 event pairs, 6424 based on Foata normal form. 80/22632 useless extension candidates. Maximal degree in co-relation 86602. Up to 15086 conditions per place. [2024-10-24 12:33:17,390 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 136 selfloop transitions, 28 changer transitions 11/199 dead transitions. [2024-10-24 12:33:17,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 199 transitions, 2136 flow [2024-10-24 12:33:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:33:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:33:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-24 12:33:17,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-10-24 12:33:17,392 INFO L175 Difference]: Start difference. First operand has 120 places, 154 transitions, 1617 flow. Second operand 5 states and 122 transitions. [2024-10-24 12:33:17,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 199 transitions, 2136 flow [2024-10-24 12:33:18,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2112 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-24 12:33:18,100 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1639 flow [2024-10-24 12:33:18,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1639, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-10-24 12:33:18,101 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-24 12:33:18,101 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1639 flow [2024-10-24 12:33:18,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:18,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:18,102 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, 1] [2024-10-24 12:33:18,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 12:33:18,102 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:18,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash 761143152, now seen corresponding path program 6 times [2024-10-24 12:33:18,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:18,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778510125] [2024-10-24 12:33:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:18,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:18,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:18,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778510125] [2024-10-24 12:33:18,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778510125] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:18,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:18,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:33:18,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011805383] [2024-10-24 12:33:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:18,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:33:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:18,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:33:18,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:33:18,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 12:33:18,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 1639 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:18,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:18,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 12:33:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:20,139 INFO L124 PetriNetUnfolderBase]: 16103/22033 cut-off events. [2024-10-24 12:33:20,139 INFO L125 PetriNetUnfolderBase]: For 97322/97502 co-relation queries the response was YES. [2024-10-24 12:33:20,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91142 conditions, 22033 events. 16103/22033 cut-off events. For 97322/97502 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 122704 event pairs, 4643 based on Foata normal form. 57/22017 useless extension candidates. Maximal degree in co-relation 85885. Up to 10173 conditions per place. [2024-10-24 12:33:20,421 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 131 selfloop transitions, 40 changer transitions 2/199 dead transitions. [2024-10-24 12:33:20,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 199 transitions, 2190 flow [2024-10-24 12:33:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:33:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:33:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-24 12:33:20,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-10-24 12:33:20,425 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1639 flow. Second operand 5 states and 123 transitions. [2024-10-24 12:33:20,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 199 transitions, 2190 flow [2024-10-24 12:33:21,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2126 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-24 12:33:21,365 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1669 flow [2024-10-24 12:33:21,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1669, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-10-24 12:33:21,365 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-24 12:33:21,365 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1669 flow [2024-10-24 12:33:21,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-24 12:33:21,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:21,366 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, 1] [2024-10-24 12:33:21,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 12:33:21,366 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:21,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash 492202918, now seen corresponding path program 6 times [2024-10-24 12:33:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488872558] [2024-10-24 12:33:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:21,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:21,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:21,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488872558] [2024-10-24 12:33:21,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488872558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:21,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:21,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:33:21,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468603997] [2024-10-24 12:33:21,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:21,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:33:21,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:21,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:33:21,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:33:21,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 12:33:21,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 1669 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:21,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:21,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 12:33:21,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:23,082 INFO L124 PetriNetUnfolderBase]: 18791/24940 cut-off events. [2024-10-24 12:33:23,082 INFO L125 PetriNetUnfolderBase]: For 98376/98376 co-relation queries the response was YES. [2024-10-24 12:33:23,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101308 conditions, 24940 events. 18791/24940 cut-off events. For 98376/98376 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 129445 event pairs, 4706 based on Foata normal form. 230/25167 useless extension candidates. Maximal degree in co-relation 97617. Up to 10461 conditions per place. [2024-10-24 12:33:23,255 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 169 selfloop transitions, 45 changer transitions 1/218 dead transitions. [2024-10-24 12:33:23,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 218 transitions, 2372 flow [2024-10-24 12:33:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:33:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:33:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-10-24 12:33:23,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-24 12:33:23,256 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1669 flow. Second operand 6 states and 147 transitions. [2024-10-24 12:33:23,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 218 transitions, 2372 flow [2024-10-24 12:33:24,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2288 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-24 12:33:24,259 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1695 flow [2024-10-24 12:33:24,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1695, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-10-24 12:33:24,259 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-24 12:33:24,260 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1695 flow [2024-10-24 12:33:24,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:24,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:24,260 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, 1] [2024-10-24 12:33:24,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 12:33:24,260 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:24,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash 933483450, now seen corresponding path program 7 times [2024-10-24 12:33:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:24,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312267421] [2024-10-24 12:33:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:24,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:24,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:24,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312267421] [2024-10-24 12:33:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312267421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:24,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:33:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596015474] [2024-10-24 12:33:24,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:24,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:33:24,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:33:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:33:24,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 12:33:24,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1695 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:24,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:24,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 12:33:24,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:25,893 INFO L124 PetriNetUnfolderBase]: 18283/24237 cut-off events. [2024-10-24 12:33:25,893 INFO L125 PetriNetUnfolderBase]: For 98372/98372 co-relation queries the response was YES. [2024-10-24 12:33:26,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98701 conditions, 24237 events. 18283/24237 cut-off events. For 98372/98372 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 125396 event pairs, 5472 based on Foata normal form. 143/24377 useless extension candidates. Maximal degree in co-relation 95483. Up to 12158 conditions per place. [2024-10-24 12:33:26,158 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 156 selfloop transitions, 49 changer transitions 1/209 dead transitions. [2024-10-24 12:33:26,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 209 transitions, 2301 flow [2024-10-24 12:33:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:33:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:33:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-10-24 12:33:26,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-24 12:33:26,160 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1695 flow. Second operand 6 states and 140 transitions. [2024-10-24 12:33:26,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 209 transitions, 2301 flow [2024-10-24 12:33:27,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 209 transitions, 2190 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-10-24 12:33:27,324 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1644 flow [2024-10-24 12:33:27,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1644, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-10-24 12:33:27,325 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-10-24 12:33:27,325 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1644 flow [2024-10-24 12:33:27,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:27,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:27,325 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, 1, 1, 1, 1] [2024-10-24 12:33:27,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 12:33:27,326 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:27,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1218718750, now seen corresponding path program 1 times [2024-10-24 12:33:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:27,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713502303] [2024-10-24 12:33:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713502303] [2024-10-24 12:33:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713502303] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865104382] [2024-10-24 12:33:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:27,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:27,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:27,402 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) [2024-10-24 12:33:27,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:33:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:27,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 12:33:27,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:27,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:33:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865104382] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:27,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:27,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-10-24 12:33:27,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199637937] [2024-10-24 12:33:27,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:27,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:33:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:33:27,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:33:27,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 12:33:27,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1644 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-10-24 12:33:27,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:27,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 12:33:27,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:32,121 INFO L124 PetriNetUnfolderBase]: 37670/52655 cut-off events. [2024-10-24 12:33:32,121 INFO L125 PetriNetUnfolderBase]: For 252499/253791 co-relation queries the response was YES. [2024-10-24 12:33:32,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211471 conditions, 52655 events. 37670/52655 cut-off events. For 252499/253791 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 331642 event pairs, 3662 based on Foata normal form. 1864/54368 useless extension candidates. Maximal degree in co-relation 194979. Up to 19210 conditions per place. [2024-10-24 12:33:32,796 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 389 selfloop transitions, 22 changer transitions 4/463 dead transitions. [2024-10-24 12:33:32,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 463 transitions, 5621 flow [2024-10-24 12:33:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:33:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:33:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-10-24 12:33:32,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-10-24 12:33:32,798 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1644 flow. Second operand 7 states and 214 transitions. [2024-10-24 12:33:32,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 463 transitions, 5621 flow [2024-10-24 12:33:36,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 463 transitions, 4953 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-10-24 12:33:36,376 INFO L231 Difference]: Finished difference. Result has 116 places, 171 transitions, 1658 flow [2024-10-24 12:33:36,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1658, PETRI_PLACES=116, PETRI_TRANSITIONS=171} [2024-10-24 12:33:36,377 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-10-24 12:33:36,380 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 171 transitions, 1658 flow [2024-10-24 12:33:36,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-10-24 12:33:36,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:36,380 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, 1, 1, 1, 1] [2024-10-24 12:33:36,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 12:33:36,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 12:33:36,582 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 12:33:36,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 836886338, now seen corresponding path program 2 times [2024-10-24 12:33:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:36,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005999253] [2024-10-24 12:33:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:36,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:36,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:36,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005999253] [2024-10-24 12:33:36,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005999253] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:36,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981276458] [2024-10-24 12:33:36,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:33:36,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:36,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:36,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:36,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:33:36,694 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:33:36,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:36,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 12:33:36,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:36,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:33:36,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981276458] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:36,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 12:33:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-24 12:33:36,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107034511] [2024-10-24 12:33:36,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:36,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:33:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:33:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:33:36,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 12:33:36,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 171 transitions, 1658 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-10-24 12:33:36,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:36,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 12:33:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand