./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:14:01,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:14:01,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:14:01,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:14:01,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:14:01,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:14:01,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:14:01,427 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:14:01,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:14:01,428 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:14:01,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:14:01,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:14:01,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:14:01,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:14:01,429 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:14:01,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:14:01,429 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:14:01,429 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:14:01,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:14:01,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:14:01,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:14:01,432 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:14:01,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:14:01,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:14:01,433 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:14:01,433 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:14:01,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:14:01,433 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:14:01,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:14:01,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:14:01,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:14:01,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:14:01,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:14:01,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:14:01,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:14:01,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:14:01,435 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:14:01,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:14:01,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:14:01,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:14:01,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:14:01,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:14:01,438 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2024-10-24 12:14:01,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:14:01,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:14:01,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:14:01,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:14:01,681 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:14:01,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2024-10-24 12:14:02,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:14:03,119 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:14:03,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2024-10-24 12:14:03,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0043c646/491d31c2ecf1418586c6db2e9ee00ed2/FLAGa1284246f [2024-10-24 12:14:03,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0043c646/491d31c2ecf1418586c6db2e9ee00ed2 [2024-10-24 12:14:03,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:14:03,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:14:03,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:14:03,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:14:03,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:14:03,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:03,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b7870c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03, skipping insertion in model container [2024-10-24 12:14:03,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:03,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:14:03,698 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/pthread-wmm/mix021.opt.i[944,957] [2024-10-24 12:14:03,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:14:03,863 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:14:03,872 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/pthread-wmm/mix021.opt.i[944,957] [2024-10-24 12:14:03,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:14:03,941 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:14:03,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03 WrapperNode [2024-10-24 12:14:03,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:14:03,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:14:03,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:14:03,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:14:03,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:03,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,004 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2024-10-24 12:14:04,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:14:04,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:14:04,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:14:04,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:14:04,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,047 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 12:14:04,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:14:04,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:14:04,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:14:04,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:14:04,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (1/1) ... [2024-10-24 12:14:04,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:14:04,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:14:04,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:14:04,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:14:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:14:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:14:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-24 12:14:04,139 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-24 12:14:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-24 12:14:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-24 12:14:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-24 12:14:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-24 12:14:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-24 12:14:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-24 12:14:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:14:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:14:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:14:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:14:04,142 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:14:04,249 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:14:04,250 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:14:04,542 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:14:04,542 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:14:04,720 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:14:04,720 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:14:04,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:14:04 BoogieIcfgContainer [2024-10-24 12:14:04,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:14:04,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:14:04,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:14:04,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:14:04,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:14:03" (1/3) ... [2024-10-24 12:14:04,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a19164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:14:04, skipping insertion in model container [2024-10-24 12:14:04,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:03" (2/3) ... [2024-10-24 12:14:04,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a19164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:14:04, skipping insertion in model container [2024-10-24 12:14:04,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:14:04" (3/3) ... [2024-10-24 12:14:04,730 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2024-10-24 12:14:04,742 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:14:04,743 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 12:14:04,743 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:14:04,789 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:14:04,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-10-24 12:14:04,843 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-10-24 12:14:04,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:14:04,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-10-24 12:14:04,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-10-24 12:14:04,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-10-24 12:14:04,859 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:14:04,865 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;@6ba15153, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:14:04,865 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 12:14:04,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:14:04,873 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-10-24 12:14:04,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:14:04,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:04,874 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:04,874 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:04,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1251635780, now seen corresponding path program 1 times [2024-10-24 12:14:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120473054] [2024-10-24 12:14:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:04,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:05,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:05,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120473054] [2024-10-24 12:14:05,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120473054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:05,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:05,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 12:14:05,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382789054] [2024-10-24 12:14:05,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:05,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:14:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:05,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:14:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:14:05,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-10-24 12:14:05,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:05,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:05,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-10-24 12:14:05,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:05,664 INFO L124 PetriNetUnfolderBase]: 879/1523 cut-off events. [2024-10-24 12:14:05,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:14:05,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 1523 events. 879/1523 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10412 event pairs, 159 based on Foata normal form. 60/1543 useless extension candidates. Maximal degree in co-relation 2831. Up to 1009 conditions per place. [2024-10-24 12:14:05,682 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 26 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2024-10-24 12:14:05,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 176 flow [2024-10-24 12:14:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:14:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:14:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-10-24 12:14:05,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2024-10-24 12:14:05,692 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 111 transitions. [2024-10-24 12:14:05,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 176 flow [2024-10-24 12:14:05,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 12:14:05,698 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-10-24 12:14:05,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-10-24 12:14:05,704 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-10-24 12:14:05,705 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-10-24 12:14:05,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:05,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:05,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:05,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:14:05,706 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:05,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1771103079, now seen corresponding path program 1 times [2024-10-24 12:14:05,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:05,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822375292] [2024-10-24 12:14:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:05,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:05,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:05,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822375292] [2024-10-24 12:14:05,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822375292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:14:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441948260] [2024-10-24 12:14:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:05,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:14:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:14:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:14:05,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-24 12:14:05,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:05,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:05,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-24 12:14:05,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:08,399 INFO L124 PetriNetUnfolderBase]: 15819/23731 cut-off events. [2024-10-24 12:14:08,399 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2024-10-24 12:14:08,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46421 conditions, 23731 events. 15819/23731 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 180560 event pairs, 3634 based on Foata normal form. 0/23023 useless extension candidates. Maximal degree in co-relation 46411. Up to 8109 conditions per place. [2024-10-24 12:14:08,533 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 41 selfloop transitions, 8 changer transitions 85/148 dead transitions. [2024-10-24 12:14:08,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 594 flow [2024-10-24 12:14:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:14:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:14:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2024-10-24 12:14:08,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6757369614512472 [2024-10-24 12:14:08,538 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 298 transitions. [2024-10-24 12:14:08,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 594 flow [2024-10-24 12:14:08,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:14:08,553 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 202 flow [2024-10-24 12:14:08,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2024-10-24 12:14:08,554 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-10-24 12:14:08,554 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 202 flow [2024-10-24 12:14:08,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:08,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:08,555 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:08,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:14:08,555 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:08,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1492082494, now seen corresponding path program 1 times [2024-10-24 12:14:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665658211] [2024-10-24 12:14:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:08,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:08,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665658211] [2024-10-24 12:14:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665658211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:14:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715837373] [2024-10-24 12:14:08,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:08,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:14:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:14:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:14:08,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-24 12:14:08,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:08,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:08,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-24 12:14:08,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:10,620 INFO L124 PetriNetUnfolderBase]: 11171/17853 cut-off events. [2024-10-24 12:14:10,621 INFO L125 PetriNetUnfolderBase]: For 29535/29535 co-relation queries the response was YES. [2024-10-24 12:14:10,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55081 conditions, 17853 events. 11171/17853 cut-off events. For 29535/29535 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 139976 event pairs, 1903 based on Foata normal form. 486/18226 useless extension candidates. Maximal degree in co-relation 55063. Up to 5673 conditions per place. [2024-10-24 12:14:10,819 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 51 selfloop transitions, 9 changer transitions 80/154 dead transitions. [2024-10-24 12:14:10,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 154 transitions, 1064 flow [2024-10-24 12:14:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:14:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:14:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2024-10-24 12:14:10,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-10-24 12:14:10,822 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 202 flow. Second operand 10 states and 305 transitions. [2024-10-24 12:14:10,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 154 transitions, 1064 flow [2024-10-24 12:14:10,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 154 transitions, 918 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-10-24 12:14:10,868 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 272 flow [2024-10-24 12:14:10,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-10-24 12:14:10,869 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-10-24 12:14:10,869 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 272 flow [2024-10-24 12:14:10,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:10,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:10,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:10,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:14:10,870 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:10,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1168558406, now seen corresponding path program 1 times [2024-10-24 12:14:10,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:10,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603735880] [2024-10-24 12:14:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:10,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:11,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603735880] [2024-10-24 12:14:11,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603735880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:11,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:11,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:14:11,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540303823] [2024-10-24 12:14:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:11,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:14:11,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:14:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:14:11,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:11,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:11,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:11,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:11,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:12,336 INFO L124 PetriNetUnfolderBase]: 7926/13710 cut-off events. [2024-10-24 12:14:12,337 INFO L125 PetriNetUnfolderBase]: For 31981/32614 co-relation queries the response was YES. [2024-10-24 12:14:12,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42846 conditions, 13710 events. 7926/13710 cut-off events. For 31981/32614 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 114649 event pairs, 2141 based on Foata normal form. 393/13213 useless extension candidates. Maximal degree in co-relation 42821. Up to 7939 conditions per place. [2024-10-24 12:14:12,421 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 43 selfloop transitions, 7 changer transitions 39/111 dead transitions. [2024-10-24 12:14:12,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 111 transitions, 770 flow [2024-10-24 12:14:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:14:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:14:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-10-24 12:14:12,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2024-10-24 12:14:12,423 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 272 flow. Second operand 7 states and 216 transitions. [2024-10-24 12:14:12,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 111 transitions, 770 flow [2024-10-24 12:14:12,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 741 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-10-24 12:14:12,572 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 368 flow [2024-10-24 12:14:12,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-10-24 12:14:12,573 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-10-24 12:14:12,574 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 368 flow [2024-10-24 12:14:12,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:12,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:12,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:12,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:14:12,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:12,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2130153545, now seen corresponding path program 1 times [2024-10-24 12:14:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835332213] [2024-10-24 12:14:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:12,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:12,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835332213] [2024-10-24 12:14:12,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835332213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:12,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:12,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:14:12,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346878154] [2024-10-24 12:14:12,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:12,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:14:12,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:14:12,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:14:12,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:12,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:12,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:12,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:12,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:14,534 INFO L124 PetriNetUnfolderBase]: 7570/13001 cut-off events. [2024-10-24 12:14:14,535 INFO L125 PetriNetUnfolderBase]: For 32969/33579 co-relation queries the response was YES. [2024-10-24 12:14:14,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42431 conditions, 13001 events. 7570/13001 cut-off events. For 32969/33579 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 105860 event pairs, 3000 based on Foata normal form. 363/13062 useless extension candidates. Maximal degree in co-relation 42402. Up to 8123 conditions per place. [2024-10-24 12:14:14,619 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 46 selfloop transitions, 6 changer transitions 37/117 dead transitions. [2024-10-24 12:14:14,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 117 transitions, 852 flow [2024-10-24 12:14:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:14:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:14:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-10-24 12:14:14,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6443148688046647 [2024-10-24 12:14:14,622 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 368 flow. Second operand 7 states and 221 transitions. [2024-10-24 12:14:14,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 117 transitions, 852 flow [2024-10-24 12:14:14,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 801 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-10-24 12:14:14,733 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 411 flow [2024-10-24 12:14:14,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-10-24 12:14:14,735 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-10-24 12:14:14,736 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 411 flow [2024-10-24 12:14:14,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:14,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:14,736 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] [2024-10-24 12:14:14,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:14:14,736 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:14,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 185670121, now seen corresponding path program 1 times [2024-10-24 12:14:14,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:14,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584072668] [2024-10-24 12:14:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:14,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:15,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:15,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584072668] [2024-10-24 12:14:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584072668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:15,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:15,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:14:15,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124258953] [2024-10-24 12:14:15,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:15,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:14:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:15,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:14:15,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:14:15,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:15,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:15,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:15,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:15,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:16,736 INFO L124 PetriNetUnfolderBase]: 9176/15681 cut-off events. [2024-10-24 12:14:16,736 INFO L125 PetriNetUnfolderBase]: For 47018/47447 co-relation queries the response was YES. [2024-10-24 12:14:16,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51281 conditions, 15681 events. 9176/15681 cut-off events. For 47018/47447 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 135324 event pairs, 3516 based on Foata normal form. 345/15356 useless extension candidates. Maximal degree in co-relation 51252. Up to 5947 conditions per place. [2024-10-24 12:14:16,858 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 46 selfloop transitions, 8 changer transitions 38/119 dead transitions. [2024-10-24 12:14:16,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 883 flow [2024-10-24 12:14:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:14:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:14:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-10-24 12:14:16,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.641399416909621 [2024-10-24 12:14:16,860 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 411 flow. Second operand 7 states and 220 transitions. [2024-10-24 12:14:16,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 883 flow [2024-10-24 12:14:17,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 849 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-24 12:14:17,007 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 419 flow [2024-10-24 12:14:17,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-10-24 12:14:17,008 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-10-24 12:14:17,008 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 419 flow [2024-10-24 12:14:17,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:17,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:17,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:17,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:14:17,009 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:17,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1390336798, now seen corresponding path program 1 times [2024-10-24 12:14:17,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:17,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358685426] [2024-10-24 12:14:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:17,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:17,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:17,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358685426] [2024-10-24 12:14:17,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358685426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:17,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:17,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:14:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096600390] [2024-10-24 12:14:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:17,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:14:17,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:14:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:14:17,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:17,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:17,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:17,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:17,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:21,409 INFO L124 PetriNetUnfolderBase]: 24881/37722 cut-off events. [2024-10-24 12:14:21,409 INFO L125 PetriNetUnfolderBase]: For 77188/80109 co-relation queries the response was YES. [2024-10-24 12:14:21,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105455 conditions, 37722 events. 24881/37722 cut-off events. For 77188/80109 co-relation queries the response was YES. Maximal size of possible extension queue 1934. Compared 296201 event pairs, 4474 based on Foata normal form. 1825/38557 useless extension candidates. Maximal degree in co-relation 105423. Up to 19440 conditions per place. [2024-10-24 12:14:21,650 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 56 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-10-24 12:14:21,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 677 flow [2024-10-24 12:14:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:14:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:14:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-24 12:14:21,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-10-24 12:14:21,651 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 419 flow. Second operand 4 states and 139 transitions. [2024-10-24 12:14:21,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 677 flow [2024-10-24 12:14:21,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 647 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-24 12:14:21,821 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 435 flow [2024-10-24 12:14:21,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-10-24 12:14:21,821 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-10-24 12:14:21,822 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 435 flow [2024-10-24 12:14:21,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:21,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:21,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:21,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:14:21,822 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:21,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:21,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1693650685, now seen corresponding path program 1 times [2024-10-24 12:14:21,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:21,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010569931] [2024-10-24 12:14:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:21,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:21,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:21,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010569931] [2024-10-24 12:14:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010569931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:21,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:14:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735442897] [2024-10-24 12:14:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:21,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:14:21,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:14:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:14:21,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:21,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 435 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:21,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:21,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:21,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:26,311 INFO L124 PetriNetUnfolderBase]: 25111/41694 cut-off events. [2024-10-24 12:14:26,311 INFO L125 PetriNetUnfolderBase]: For 87937/90012 co-relation queries the response was YES. [2024-10-24 12:14:26,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125079 conditions, 41694 events. 25111/41694 cut-off events. For 87937/90012 co-relation queries the response was YES. Maximal size of possible extension queue 2394. Compared 384610 event pairs, 11933 based on Foata normal form. 1102/38239 useless extension candidates. Maximal degree in co-relation 125048. Up to 15762 conditions per place. [2024-10-24 12:14:26,605 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 14 changer transitions 4/122 dead transitions. [2024-10-24 12:14:26,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 873 flow [2024-10-24 12:14:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:14:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:14:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-10-24 12:14:26,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6472303206997084 [2024-10-24 12:14:26,607 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 435 flow. Second operand 7 states and 222 transitions. [2024-10-24 12:14:26,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 873 flow [2024-10-24 12:14:26,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 865 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 12:14:26,713 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 544 flow [2024-10-24 12:14:26,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-10-24 12:14:26,714 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-10-24 12:14:26,714 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 544 flow [2024-10-24 12:14:26,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:26,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:26,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:26,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:14:26,716 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:26,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:26,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1232035489, now seen corresponding path program 1 times [2024-10-24 12:14:26,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:26,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595266859] [2024-10-24 12:14:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:26,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:26,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:26,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595266859] [2024-10-24 12:14:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595266859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:26,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:26,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:14:26,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042528753] [2024-10-24 12:14:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:26,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:14:26,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:14:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:14:26,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:26,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:26,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:26,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:26,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:32,427 INFO L124 PetriNetUnfolderBase]: 33733/50865 cut-off events. [2024-10-24 12:14:32,428 INFO L125 PetriNetUnfolderBase]: For 95433/99619 co-relation queries the response was YES. [2024-10-24 12:14:32,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152810 conditions, 50865 events. 33733/50865 cut-off events. For 95433/99619 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 404280 event pairs, 3592 based on Foata normal form. 2747/52482 useless extension candidates. Maximal degree in co-relation 152774. Up to 20977 conditions per place. [2024-10-24 12:14:32,795 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 71 selfloop transitions, 10 changer transitions 5/123 dead transitions. [2024-10-24 12:14:32,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 932 flow [2024-10-24 12:14:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:14:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:14:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-10-24 12:14:32,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.726530612244898 [2024-10-24 12:14:32,796 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 544 flow. Second operand 5 states and 178 transitions. [2024-10-24 12:14:32,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 932 flow [2024-10-24 12:14:33,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 123 transitions, 901 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-24 12:14:33,277 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 548 flow [2024-10-24 12:14:33,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-10-24 12:14:33,278 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-10-24 12:14:33,278 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 548 flow [2024-10-24 12:14:33,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:33,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:33,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:33,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:14:33,278 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:33,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:33,279 INFO L85 PathProgramCache]: Analyzing trace with hash -118071740, now seen corresponding path program 1 times [2024-10-24 12:14:33,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473324222] [2024-10-24 12:14:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473324222] [2024-10-24 12:14:33,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473324222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:33,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:33,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:14:33,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596331554] [2024-10-24 12:14:33,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:33,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:14:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:14:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:14:33,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:33,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:33,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:33,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:33,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:37,757 INFO L124 PetriNetUnfolderBase]: 26417/39785 cut-off events. [2024-10-24 12:14:37,758 INFO L125 PetriNetUnfolderBase]: For 80673/86154 co-relation queries the response was YES. [2024-10-24 12:14:38,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131308 conditions, 39785 events. 26417/39785 cut-off events. For 80673/86154 co-relation queries the response was YES. Maximal size of possible extension queue 2094. Compared 306861 event pairs, 1412 based on Foata normal form. 2254/41035 useless extension candidates. Maximal degree in co-relation 131269. Up to 12976 conditions per place. [2024-10-24 12:14:38,169 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 81 selfloop transitions, 14 changer transitions 5/137 dead transitions. [2024-10-24 12:14:38,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 1033 flow [2024-10-24 12:14:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:14:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:14:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-10-24 12:14:38,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7312925170068028 [2024-10-24 12:14:38,170 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 548 flow. Second operand 6 states and 215 transitions. [2024-10-24 12:14:38,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 1033 flow [2024-10-24 12:14:38,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 137 transitions, 1007 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-24 12:14:38,272 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 608 flow [2024-10-24 12:14:38,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-10-24 12:14:38,273 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-10-24 12:14:38,273 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 608 flow [2024-10-24 12:14:38,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:38,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:38,274 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, 1, 1, 1] [2024-10-24 12:14:38,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:14:38,274 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:38,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 601255363, now seen corresponding path program 1 times [2024-10-24 12:14:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209564323] [2024-10-24 12:14:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:38,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209564323] [2024-10-24 12:14:38,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209564323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:38,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:38,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:14:38,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990821536] [2024-10-24 12:14:38,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:38,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:14:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:14:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:14:38,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-24 12:14:38,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:14:38,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:38,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-24 12:14:38,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand