./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-84cfde4 [2024-10-11 14:31:10,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:31:10,968 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:31:10,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:31:10,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:31:11,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:31:11,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:31:11,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:31:11,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:31:11,020 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:31:11,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:31:11,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:31:11,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:31:11,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:31:11,023 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:31:11,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:31:11,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:31:11,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:31:11,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:31:11,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:31:11,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:31:11,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:31:11,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:31:11,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:31:11,027 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:31:11,027 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:31:11,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:31:11,027 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:31:11,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:31:11,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:31:11,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:31:11,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:31:11,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:31:11,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:31:11,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:31:11,029 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:31:11,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:31:11,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:31:11,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:31:11,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:31:11,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:31:11,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:31:11,031 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-11 14:31:11,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:31:11,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:31:11,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:31:11,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:31:11,285 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:31:11,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-11 14:31:12,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:31:12,831 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:31:12,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-11 14:31:12,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/577c617fa/c61caa91f8a54723a63d174945310142/FLAG3690988c3 [2024-10-11 14:31:12,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/577c617fa/c61caa91f8a54723a63d174945310142 [2024-10-11 14:31:12,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:31:12,861 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:31:12,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:31:12,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:31:12,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:31:12,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:12" (1/1) ... [2024-10-11 14:31:12,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a871b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:12, skipping insertion in model container [2024-10-11 14:31:12,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:12" (1/1) ... [2024-10-11 14:31:12,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:31:13,165 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] [2024-10-11 14:31:13,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:31:13,182 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:31:13,202 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] [2024-10-11 14:31:13,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:31:13,222 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:31:13,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13 WrapperNode [2024-10-11 14:31:13,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:31:13,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:31:13,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:31:13,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:31:13,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,258 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 101 [2024-10-11 14:31:13,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:31:13,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:31:13,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:31:13,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:31:13,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,287 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]. [2024-10-11 14:31:13,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:31:13,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:31:13,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:31:13,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:31:13,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (1/1) ... [2024-10-11 14:31:13,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:31:13,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:13,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:31:13,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:31:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:31:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:31:13,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:31:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:31:13,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:31:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:31:13,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:31:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 14:31:13,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 14:31:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:31:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:31:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:31:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:31:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:31:13,430 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:31:13,539 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:31:13,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:31:13,748 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:31:13,748 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:31:13,907 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:31:13,907 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 14:31:13,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:13 BoogieIcfgContainer [2024-10-11 14:31:13,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:31:13,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:31:13,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:31:13,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:31:13,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:12" (1/3) ... [2024-10-11 14:31:13,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7751ce3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:13, skipping insertion in model container [2024-10-11 14:31:13,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:13" (2/3) ... [2024-10-11 14:31:13,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7751ce3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:13, skipping insertion in model container [2024-10-11 14:31:13,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:13" (3/3) ... [2024-10-11 14:31:13,917 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-11 14:31:13,930 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:31:13,931 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:31:13,931 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:31:13,989 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 14:31:14,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-10-11 14:31:14,052 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-11 14:31:14,055 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:31:14,058 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. [2024-10-11 14:31:14,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-10-11 14:31:14,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-10-11 14:31:14,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:31:14,072 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;@66b4cd3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:31:14,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 14:31:14,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:31:14,081 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-11 14:31:14,081 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:31:14,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:14,082 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] [2024-10-11 14:31:14,083 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)] === [2024-10-11 14:31:14,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash 313037294, now seen corresponding path program 1 times [2024-10-11 14:31:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:14,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800389950] [2024-10-11 14:31:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:14,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:14,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800389950] [2024-10-11 14:31:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800389950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:14,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:14,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:31:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652369073] [2024-10-11 14:31:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:14,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:31:14,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:31:14,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:31:14,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 14:31:14,377 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) [2024-10-11 14:31:14,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:14,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 14:31:14,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:14,771 INFO L124 PetriNetUnfolderBase]: 3331/4557 cut-off events. [2024-10-11 14:31:14,772 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-10-11 14:31:14,782 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. [2024-10-11 14:31:14,803 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-10-11 14:31:14,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-10-11 14:31:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:31:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:31:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-11 14:31:14,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-11 14:31:14,815 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-10-11 14:31:14,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-10-11 14:31:14,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 14:31:14,827 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-10-11 14:31:14,829 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} [2024-10-11 14:31:14,832 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-10-11 14:31:14,833 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-10-11 14:31:14,833 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) [2024-10-11 14:31:14,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:14,833 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] [2024-10-11 14:31:14,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:31:14,833 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)] === [2024-10-11 14:31:14,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash -189752120, now seen corresponding path program 1 times [2024-10-11 14:31:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:14,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506501406] [2024-10-11 14:31:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:14,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506501406] [2024-10-11 14:31:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506501406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:15,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:15,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:31:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538208928] [2024-10-11 14:31:15,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:15,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:31:15,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:31:15,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:31:15,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:31:15,019 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) [2024-10-11 14:31:15,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:15,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:31:15,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:15,763 INFO L124 PetriNetUnfolderBase]: 7556/10174 cut-off events. [2024-10-11 14:31:15,764 INFO L125 PetriNetUnfolderBase]: For 1714/1726 co-relation queries the response was YES. [2024-10-11 14:31:15,772 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. [2024-10-11 14:31:15,815 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 90 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-10-11 14:31:15,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 104 transitions, 498 flow [2024-10-11 14:31:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-11 14:31:15,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-10-11 14:31:15,819 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 127 transitions. [2024-10-11 14:31:15,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 104 transitions, 498 flow [2024-10-11 14:31:15,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 104 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:15,822 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-10-11 14:31:15,823 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} [2024-10-11 14:31:15,823 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-10-11 14:31:15,824 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-10-11 14:31:15,824 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) [2024-10-11 14:31:15,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:15,825 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] [2024-10-11 14:31:15,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:31:15,825 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)] === [2024-10-11 14:31:15,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -67583410, now seen corresponding path program 2 times [2024-10-11 14:31:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:15,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845671896] [2024-10-11 14:31:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845671896] [2024-10-11 14:31:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845671896] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:15,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696059768] [2024-10-11 14:31:15,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:31:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:15,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:15,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:31:16,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:31:16,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:16,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:31:16,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:16,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:16,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696059768] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:16,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:16,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-11 14:31:16,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091409285] [2024-10-11 14:31:16,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:16,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:31:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:31:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:31:16,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:31:16,151 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) [2024-10-11 14:31:16,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:16,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:31:16,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:17,597 INFO L124 PetriNetUnfolderBase]: 13211/17330 cut-off events. [2024-10-11 14:31:17,598 INFO L125 PetriNetUnfolderBase]: For 6127/6127 co-relation queries the response was YES. [2024-10-11 14:31:17,616 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. [2024-10-11 14:31:17,678 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 234 selfloop transitions, 36 changer transitions 0/273 dead transitions. [2024-10-11 14:31:17,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 273 transitions, 1371 flow [2024-10-11 14:31:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:31:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:31:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 340 transitions. [2024-10-11 14:31:17,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-10-11 14:31:17,683 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 340 transitions. [2024-10-11 14:31:17,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 273 transitions, 1371 flow [2024-10-11 14:31:17,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 273 transitions, 1371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:31:17,692 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 405 flow [2024-10-11 14:31:17,692 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} [2024-10-11 14:31:17,693 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-10-11 14:31:17,693 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 405 flow [2024-10-11 14:31:17,693 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) [2024-10-11 14:31:17,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:17,694 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] [2024-10-11 14:31:17,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:31:17,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:17,894 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)] === [2024-10-11 14:31:17,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1569690990, now seen corresponding path program 3 times [2024-10-11 14:31:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670530253] [2024-10-11 14:31:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670530253] [2024-10-11 14:31:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670530253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:17,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:31:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623572413] [2024-10-11 14:31:17,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:17,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:31:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:31:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:31:17,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:31:17,993 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) [2024-10-11 14:31:17,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:17,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:31:17,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:19,517 INFO L124 PetriNetUnfolderBase]: 16615/22403 cut-off events. [2024-10-11 14:31:19,517 INFO L125 PetriNetUnfolderBase]: For 29608/29656 co-relation queries the response was YES. [2024-10-11 14:31:19,563 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. [2024-10-11 14:31:19,659 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 123 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2024-10-11 14:31:19,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1021 flow [2024-10-11 14:31:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-11 14:31:19,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-11 14:31:19,661 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 405 flow. Second operand 5 states and 126 transitions. [2024-10-11 14:31:19,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1021 flow [2024-10-11 14:31:19,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 153 transitions, 974 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:19,946 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 504 flow [2024-10-11 14:31:19,946 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} [2024-10-11 14:31:19,947 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-10-11 14:31:19,947 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 504 flow [2024-10-11 14:31:19,948 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) [2024-10-11 14:31:19,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:19,948 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] [2024-10-11 14:31:19,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:31:19,948 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)] === [2024-10-11 14:31:19,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash -974718849, now seen corresponding path program 1 times [2024-10-11 14:31:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:19,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373615196] [2024-10-11 14:31:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373615196] [2024-10-11 14:31:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373615196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:19,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:31:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848083163] [2024-10-11 14:31:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:19,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:31:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:31:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:31:19,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 14:31:19,999 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) [2024-10-11 14:31:19,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:19,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 14:31:19,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:20,963 INFO L124 PetriNetUnfolderBase]: 11059/15265 cut-off events. [2024-10-11 14:31:20,964 INFO L125 PetriNetUnfolderBase]: For 28499/28750 co-relation queries the response was YES. [2024-10-11 14:31:20,998 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. [2024-10-11 14:31:21,063 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 94 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-10-11 14:31:21,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 111 transitions, 837 flow [2024-10-11 14:31:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:31:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:31:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-11 14:31:21,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-11 14:31:21,067 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 504 flow. Second operand 3 states and 82 transitions. [2024-10-11 14:31:21,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 111 transitions, 837 flow [2024-10-11 14:31:21,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 800 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:21,192 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 492 flow [2024-10-11 14:31:21,192 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} [2024-10-11 14:31:21,193 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-10-11 14:31:21,193 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 492 flow [2024-10-11 14:31:21,193 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) [2024-10-11 14:31:21,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:21,193 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] [2024-10-11 14:31:21,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:31:21,194 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)] === [2024-10-11 14:31:21,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash 624714587, now seen corresponding path program 1 times [2024-10-11 14:31:21,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164852644] [2024-10-11 14:31:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:21,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:21,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164852644] [2024-10-11 14:31:21,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164852644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:21,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:21,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:31:21,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625813251] [2024-10-11 14:31:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:21,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:31:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:31:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:31:21,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 14:31:21,237 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) [2024-10-11 14:31:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 14:31:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:22,033 INFO L124 PetriNetUnfolderBase]: 9006/12572 cut-off events. [2024-10-11 14:31:22,033 INFO L125 PetriNetUnfolderBase]: For 20937/21092 co-relation queries the response was YES. [2024-10-11 14:31:22,057 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. [2024-10-11 14:31:22,095 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 92 selfloop transitions, 3 changer transitions 3/112 dead transitions. [2024-10-11 14:31:22,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 826 flow [2024-10-11 14:31:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:31:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:31:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-11 14:31:22,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-11 14:31:22,096 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 492 flow. Second operand 3 states and 78 transitions. [2024-10-11 14:31:22,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 826 flow [2024-10-11 14:31:22,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:22,134 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 472 flow [2024-10-11 14:31:22,134 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} [2024-10-11 14:31:22,135 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-10-11 14:31:22,135 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 472 flow [2024-10-11 14:31:22,135 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) [2024-10-11 14:31:22,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:22,135 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] [2024-10-11 14:31:22,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:31:22,135 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)] === [2024-10-11 14:31:22,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash -462380530, now seen corresponding path program 1 times [2024-10-11 14:31:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497332370] [2024-10-11 14:31:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:22,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:22,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497332370] [2024-10-11 14:31:22,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497332370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:22,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:22,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:31:22,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998628828] [2024-10-11 14:31:22,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:22,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:31:22,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:31:22,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:31:22,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:31:22,195 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) [2024-10-11 14:31:22,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:22,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:31:22,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:22,968 INFO L124 PetriNetUnfolderBase]: 10466/14189 cut-off events. [2024-10-11 14:31:22,968 INFO L125 PetriNetUnfolderBase]: For 20749/20779 co-relation queries the response was YES. [2024-10-11 14:31:22,998 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. [2024-10-11 14:31:23,040 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 103 selfloop transitions, 12 changer transitions 16/137 dead transitions. [2024-10-11 14:31:23,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 944 flow [2024-10-11 14:31:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-11 14:31:23,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-11 14:31:23,041 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 472 flow. Second operand 5 states and 128 transitions. [2024-10-11 14:31:23,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 944 flow [2024-10-11 14:31:23,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 137 transitions, 934 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 14:31:23,090 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 499 flow [2024-10-11 14:31:23,090 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} [2024-10-11 14:31:23,090 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-10-11 14:31:23,090 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 499 flow [2024-10-11 14:31:23,091 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) [2024-10-11 14:31:23,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:23,091 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] [2024-10-11 14:31:23,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:31:23,091 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)] === [2024-10-11 14:31:23,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:23,092 INFO L85 PathProgramCache]: Analyzing trace with hash -960797022, now seen corresponding path program 2 times [2024-10-11 14:31:23,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:23,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555108398] [2024-10-11 14:31:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:23,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555108398] [2024-10-11 14:31:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555108398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473598861] [2024-10-11 14:31:23,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:31:23,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:23,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:23,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:31:23,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:31:23,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:23,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:31:23,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:23,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:23,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473598861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:23,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:23,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-11 14:31:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29197627] [2024-10-11 14:31:23,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:23,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:31:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:31:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:31:23,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:31:23,281 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) [2024-10-11 14:31:23,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:23,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:31:23,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:24,874 INFO L124 PetriNetUnfolderBase]: 14081/18750 cut-off events. [2024-10-11 14:31:24,875 INFO L125 PetriNetUnfolderBase]: For 32587/32587 co-relation queries the response was YES. [2024-10-11 14:31:24,947 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. [2024-10-11 14:31:25,021 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 222 selfloop transitions, 71 changer transitions 2/298 dead transitions. [2024-10-11 14:31:25,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 298 transitions, 2020 flow [2024-10-11 14:31:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:31:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:31:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 320 transitions. [2024-10-11 14:31:25,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-11 14:31:25,023 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 499 flow. Second operand 14 states and 320 transitions. [2024-10-11 14:31:25,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 298 transitions, 2020 flow [2024-10-11 14:31:25,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 298 transitions, 1962 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-11 14:31:25,245 INFO L231 Difference]: Finished difference. Result has 94 places, 123 transitions, 1015 flow [2024-10-11 14:31:25,246 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} [2024-10-11 14:31:25,246 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-10-11 14:31:25,246 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 123 transitions, 1015 flow [2024-10-11 14:31:25,247 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) [2024-10-11 14:31:25,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:25,247 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] [2024-10-11 14:31:25,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:31:25,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:25,447 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)] === [2024-10-11 14:31:25,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash 555086900, now seen corresponding path program 4 times [2024-10-11 14:31:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226247589] [2024-10-11 14:31:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:25,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:25,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:25,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226247589] [2024-10-11 14:31:25,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226247589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:25,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:25,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:31:25,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158385747] [2024-10-11 14:31:25,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:25,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:31:25,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:25,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:31:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:31:25,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:31:25,520 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) [2024-10-11 14:31:25,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:25,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:31:25,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:26,940 INFO L124 PetriNetUnfolderBase]: 13817/18486 cut-off events. [2024-10-11 14:31:26,942 INFO L125 PetriNetUnfolderBase]: For 48369/48369 co-relation queries the response was YES. [2024-10-11 14:31:27,024 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. [2024-10-11 14:31:27,104 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 138 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-10-11 14:31:27,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 171 transitions, 1541 flow [2024-10-11 14:31:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-10-11 14:31:27,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-10-11 14:31:27,105 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 1015 flow. Second operand 5 states and 124 transitions. [2024-10-11 14:31:27,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 171 transitions, 1541 flow [2024-10-11 14:31:27,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 1467 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-10-11 14:31:27,437 INFO L231 Difference]: Finished difference. Result has 95 places, 122 transitions, 1003 flow [2024-10-11 14:31:27,438 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} [2024-10-11 14:31:27,439 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-10-11 14:31:27,439 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 122 transitions, 1003 flow [2024-10-11 14:31:27,439 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) [2024-10-11 14:31:27,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:27,440 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] [2024-10-11 14:31:27,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:31:27,441 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)] === [2024-10-11 14:31:27,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1478788968, now seen corresponding path program 3 times [2024-10-11 14:31:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:27,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875758480] [2024-10-11 14:31:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:27,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875758480] [2024-10-11 14:31:27,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875758480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:27,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:27,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:31:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181359211] [2024-10-11 14:31:27,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:27,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:31:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:31:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:31:27,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:31:27,526 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) [2024-10-11 14:31:27,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:27,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:31:27,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:28,858 INFO L124 PetriNetUnfolderBase]: 12918/17564 cut-off events. [2024-10-11 14:31:28,858 INFO L125 PetriNetUnfolderBase]: For 46295/46307 co-relation queries the response was YES. [2024-10-11 14:31:28,936 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. [2024-10-11 14:31:29,012 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 124 selfloop transitions, 31 changer transitions 2/175 dead transitions. [2024-10-11 14:31:29,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 175 transitions, 1576 flow [2024-10-11 14:31:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:29,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-10-11 14:31:29,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 14:31:29,013 INFO L175 Difference]: Start difference. First operand has 95 places, 122 transitions, 1003 flow. Second operand 5 states and 125 transitions. [2024-10-11 14:31:29,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 175 transitions, 1576 flow [2024-10-11 14:31:29,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 175 transitions, 1493 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:31:29,307 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1095 flow [2024-10-11 14:31:29,308 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} [2024-10-11 14:31:29,308 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-10-11 14:31:29,308 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1095 flow [2024-10-11 14:31:29,308 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) [2024-10-11 14:31:29,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:29,309 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] [2024-10-11 14:31:29,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:31:29,309 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)] === [2024-10-11 14:31:29,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash 860222506, now seen corresponding path program 4 times [2024-10-11 14:31:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:29,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982036679] [2024-10-11 14:31:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982036679] [2024-10-11 14:31:29,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982036679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:29,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:29,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:31:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044987791] [2024-10-11 14:31:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:29,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:31:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:31:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:31:29,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:31:29,388 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) [2024-10-11 14:31:29,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:29,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:31:29,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:30,853 INFO L124 PetriNetUnfolderBase]: 14332/19181 cut-off events. [2024-10-11 14:31:30,854 INFO L125 PetriNetUnfolderBase]: For 50455/50479 co-relation queries the response was YES. [2024-10-11 14:31:30,944 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. [2024-10-11 14:31:31,034 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 150 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-10-11 14:31:31,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 193 transitions, 1734 flow [2024-10-11 14:31:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:31:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:31:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-11 14:31:31,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-11 14:31:31,038 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1095 flow. Second operand 6 states and 145 transitions. [2024-10-11 14:31:31,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 193 transitions, 1734 flow [2024-10-11 14:31:31,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 1681 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-11 14:31:31,296 INFO L231 Difference]: Finished difference. Result has 102 places, 131 transitions, 1181 flow [2024-10-11 14:31:31,297 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} [2024-10-11 14:31:31,297 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-10-11 14:31:31,297 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 131 transitions, 1181 flow [2024-10-11 14:31:31,298 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) [2024-10-11 14:31:31,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:31,298 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] [2024-10-11 14:31:31,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:31:31,298 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)] === [2024-10-11 14:31:31,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 679948238, now seen corresponding path program 5 times [2024-10-11 14:31:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:31,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503734217] [2024-10-11 14:31:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:31,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:31,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503734217] [2024-10-11 14:31:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503734217] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191949566] [2024-10-11 14:31:31,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:31:31,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:31,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:31,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:31,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:31:31,436 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:31:31,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:31,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:31:31,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:31,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191949566] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:31,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:31,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-11 14:31:31,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285318083] [2024-10-11 14:31:31,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:31,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:31:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:31:31,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:31:31,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:31:31,521 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) [2024-10-11 14:31:31,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:31,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:31:31,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:33,689 INFO L124 PetriNetUnfolderBase]: 18317/24367 cut-off events. [2024-10-11 14:31:33,690 INFO L125 PetriNetUnfolderBase]: For 59890/59890 co-relation queries the response was YES. [2024-10-11 14:31:33,763 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. [2024-10-11 14:31:33,840 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 258 selfloop transitions, 84 changer transitions 0/345 dead transitions. [2024-10-11 14:31:33,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 345 transitions, 2754 flow [2024-10-11 14:31:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:31:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:31:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 357 transitions. [2024-10-11 14:31:33,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-10-11 14:31:33,841 INFO L175 Difference]: Start difference. First operand has 102 places, 131 transitions, 1181 flow. Second operand 15 states and 357 transitions. [2024-10-11 14:31:33,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 345 transitions, 2754 flow [2024-10-11 14:31:34,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 345 transitions, 2696 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:31:34,179 INFO L231 Difference]: Finished difference. Result has 120 places, 154 transitions, 1617 flow [2024-10-11 14:31:34,179 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} [2024-10-11 14:31:34,179 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-10-11 14:31:34,180 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 154 transitions, 1617 flow [2024-10-11 14:31:34,180 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) [2024-10-11 14:31:34,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:34,180 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] [2024-10-11 14:31:34,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:31:34,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:34,385 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)] === [2024-10-11 14:31:34,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1357344238, now seen corresponding path program 5 times [2024-10-11 14:31:34,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:34,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847283888] [2024-10-11 14:31:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:34,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:34,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:34,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847283888] [2024-10-11 14:31:34,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847283888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:34,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:34,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:31:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664566073] [2024-10-11 14:31:34,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:34,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:31:34,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:34,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:31:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:31:34,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:31:34,476 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) [2024-10-11 14:31:34,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:34,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:31:34,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:36,100 INFO L124 PetriNetUnfolderBase]: 16716/22657 cut-off events. [2024-10-11 14:31:36,101 INFO L125 PetriNetUnfolderBase]: For 88287/88428 co-relation queries the response was YES. [2024-10-11 14:31:36,191 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. [2024-10-11 14:31:36,267 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 136 selfloop transitions, 28 changer transitions 11/199 dead transitions. [2024-10-11 14:31:36,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 199 transitions, 2136 flow [2024-10-11 14:31:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-11 14:31:36,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-10-11 14:31:36,268 INFO L175 Difference]: Start difference. First operand has 120 places, 154 transitions, 1617 flow. Second operand 5 states and 122 transitions. [2024-10-11 14:31:36,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 199 transitions, 2136 flow [2024-10-11 14:31:36,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2112 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 14:31:36,913 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1639 flow [2024-10-11 14:31:36,913 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} [2024-10-11 14:31:36,914 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-11 14:31:36,914 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1639 flow [2024-10-11 14:31:36,914 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) [2024-10-11 14:31:36,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:36,914 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] [2024-10-11 14:31:36,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:31:36,914 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)] === [2024-10-11 14:31:36,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:36,915 INFO L85 PathProgramCache]: Analyzing trace with hash 761143152, now seen corresponding path program 6 times [2024-10-11 14:31:36,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:36,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505312091] [2024-10-11 14:31:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:36,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:36,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:36,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505312091] [2024-10-11 14:31:36,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505312091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:36,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:36,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:31:36,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238349689] [2024-10-11 14:31:36,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:36,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:31:36,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:36,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:31:36,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:31:37,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:31:37,000 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) [2024-10-11 14:31:37,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:37,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:31:37,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:39,132 INFO L124 PetriNetUnfolderBase]: 16103/22033 cut-off events. [2024-10-11 14:31:39,132 INFO L125 PetriNetUnfolderBase]: For 97322/97502 co-relation queries the response was YES. [2024-10-11 14:31:39,208 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. [2024-10-11 14:31:39,278 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 131 selfloop transitions, 40 changer transitions 2/199 dead transitions. [2024-10-11 14:31:39,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 199 transitions, 2190 flow [2024-10-11 14:31:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-11 14:31:39,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-10-11 14:31:39,279 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1639 flow. Second operand 5 states and 123 transitions. [2024-10-11 14:31:39,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 199 transitions, 2190 flow [2024-10-11 14:31:39,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2126 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-11 14:31:39,904 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1669 flow [2024-10-11 14:31:39,904 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} [2024-10-11 14:31:39,904 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-11 14:31:39,905 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1669 flow [2024-10-11 14:31:39,905 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) [2024-10-11 14:31:39,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:39,905 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] [2024-10-11 14:31:39,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:31:39,905 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)] === [2024-10-11 14:31:39,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:39,905 INFO L85 PathProgramCache]: Analyzing trace with hash 492202918, now seen corresponding path program 6 times [2024-10-11 14:31:39,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:39,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070582538] [2024-10-11 14:31:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:39,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070582538] [2024-10-11 14:31:39,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070582538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:39,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:39,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:31:39,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705147656] [2024-10-11 14:31:39,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:39,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:31:39,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:31:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:31:39,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:31:39,957 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) [2024-10-11 14:31:39,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:39,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:31:39,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:41,781 INFO L124 PetriNetUnfolderBase]: 18791/24940 cut-off events. [2024-10-11 14:31:41,781 INFO L125 PetriNetUnfolderBase]: For 98376/98376 co-relation queries the response was YES. [2024-10-11 14:31:41,893 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. [2024-10-11 14:31:42,111 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 169 selfloop transitions, 45 changer transitions 1/218 dead transitions. [2024-10-11 14:31:42,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 218 transitions, 2372 flow [2024-10-11 14:31:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:31:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:31:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-10-11 14:31:42,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-11 14:31:42,113 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1669 flow. Second operand 6 states and 147 transitions. [2024-10-11 14:31:42,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 218 transitions, 2372 flow [2024-10-11 14:31:42,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2288 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-11 14:31:42,873 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1695 flow [2024-10-11 14:31:42,874 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} [2024-10-11 14:31:42,874 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-10-11 14:31:42,874 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1695 flow [2024-10-11 14:31:42,875 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) [2024-10-11 14:31:42,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:42,875 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] [2024-10-11 14:31:42,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:31:42,875 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)] === [2024-10-11 14:31:42,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 933483450, now seen corresponding path program 7 times [2024-10-11 14:31:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942626110] [2024-10-11 14:31:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:42,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942626110] [2024-10-11 14:31:42,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942626110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:42,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:42,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:31:42,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064398265] [2024-10-11 14:31:42,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:42,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:31:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:31:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:31:42,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 14:31:42,927 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) [2024-10-11 14:31:42,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:42,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 14:31:42,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:44,897 INFO L124 PetriNetUnfolderBase]: 18283/24237 cut-off events. [2024-10-11 14:31:44,897 INFO L125 PetriNetUnfolderBase]: For 98372/98372 co-relation queries the response was YES. [2024-10-11 14:31:44,992 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. [2024-10-11 14:31:45,074 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 156 selfloop transitions, 49 changer transitions 1/209 dead transitions. [2024-10-11 14:31:45,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 209 transitions, 2301 flow [2024-10-11 14:31:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:31:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:31:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-10-11 14:31:45,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 14:31:45,076 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1695 flow. Second operand 6 states and 140 transitions. [2024-10-11 14:31:45,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 209 transitions, 2301 flow [2024-10-11 14:31:45,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 209 transitions, 2190 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-10-11 14:31:45,881 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1644 flow [2024-10-11 14:31:45,882 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} [2024-10-11 14:31:45,882 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-10-11 14:31:45,882 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1644 flow [2024-10-11 14:31:45,882 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) [2024-10-11 14:31:45,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:45,882 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] [2024-10-11 14:31:45,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 14:31:45,883 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)] === [2024-10-11 14:31:45,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:45,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1218718750, now seen corresponding path program 1 times [2024-10-11 14:31:45,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:45,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211796405] [2024-10-11 14:31:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:45,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:45,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:45,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211796405] [2024-10-11 14:31:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211796405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139764490] [2024-10-11 14:31:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:45,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:45,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:45,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:45,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:31:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:46,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:31:46,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:46,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:31:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139764490] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:46,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:46,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-10-11 14:31:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652804431] [2024-10-11 14:31:46,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:46,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:31:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:31:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:31:46,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 14:31:46,100 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) [2024-10-11 14:31:46,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:46,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 14:31:46,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:50,538 INFO L124 PetriNetUnfolderBase]: 37670/52655 cut-off events. [2024-10-11 14:31:50,539 INFO L125 PetriNetUnfolderBase]: For 252499/253791 co-relation queries the response was YES. [2024-10-11 14:31:50,793 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. [2024-10-11 14:31:50,977 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 389 selfloop transitions, 22 changer transitions 4/463 dead transitions. [2024-10-11 14:31:50,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 463 transitions, 5621 flow [2024-10-11 14:31:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:31:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:31:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-10-11 14:31:50,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-10-11 14:31:50,978 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1644 flow. Second operand 7 states and 214 transitions. [2024-10-11 14:31:50,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 463 transitions, 5621 flow