./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:28:40,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:28:40,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:28:40,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:28:40,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:28:40,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:28:40,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:28:40,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:28:40,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:28:40,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:28:40,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:28:40,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:28:40,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:28:40,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:28:40,719 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:28:40,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:28:40,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:28:40,720 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:28:40,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:28:40,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:28:40,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:28:40,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:28:40,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:28:40,721 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:28:40,721 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:28:40,721 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:28:40,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:28:40,722 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:28:40,722 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:28:40,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:28:40,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:28:40,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:28:40,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:28:40,723 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:28:40,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:28:40,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:28:40,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:28:40,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:28:40,724 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:28:40,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:28:40,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:28:40,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:28:40,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-16 19:28:40,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:28:40,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:28:40,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:28:40,916 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:28:40,916 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:28:40,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-16 19:28:42,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:28:42,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:28:42,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-16 19:28:42,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013b50986/3ffca500d3d94045bde6b8bb0a93b00f/FLAGc0117c7a6 [2024-11-16 19:28:42,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013b50986/3ffca500d3d94045bde6b8bb0a93b00f [2024-11-16 19:28:42,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:28:42,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:28:42,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:28:42,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:28:42,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:28:42,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:42,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57922e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42, skipping insertion in model container [2024-11-16 19:28:42,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:42,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:28:42,917 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2218,2231] [2024-11-16 19:28:42,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:28:42,930 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:28:42,949 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2218,2231] [2024-11-16 19:28:42,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:28:42,967 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:28:42,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42 WrapperNode [2024-11-16 19:28:42,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:28:42,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:28:42,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:28:42,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:28:42,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:42,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,021 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2024-11-16 19:28:43,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:28:43,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:28:43,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:28:43,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:28:43,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,073 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:28:43,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,079 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:28:43,087 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:28:43,087 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:28:43,087 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:28:43,090 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (1/1) ... [2024-11-16 19:28:43,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:28:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:43,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:28:43,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:28:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:28:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:28:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:28:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:28:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:28:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:28:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:28:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-16 19:28:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-16 19:28:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:28:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:28:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:28:43,167 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:28:43,254 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:28:43,256 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:28:43,411 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:28:43,411 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:28:43,528 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:28:43,529 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:28:43,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:28:43 BoogieIcfgContainer [2024-11-16 19:28:43,529 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:28:43,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:28:43,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:28:43,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:28:43,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:28:42" (1/3) ... [2024-11-16 19:28:43,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a1c4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:28:43, skipping insertion in model container [2024-11-16 19:28:43,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:42" (2/3) ... [2024-11-16 19:28:43,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a1c4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:28:43, skipping insertion in model container [2024-11-16 19:28:43,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:28:43" (3/3) ... [2024-11-16 19:28:43,536 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-16 19:28:43,550 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:28:43,550 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:28:43,551 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:28:43,606 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-16 19:28:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 132 flow [2024-11-16 19:28:43,661 INFO L124 PetriNetUnfolderBase]: 8/48 cut-off events. [2024-11-16 19:28:43,661 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:28:43,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 8/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-16 19:28:43,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 52 transitions, 132 flow [2024-11-16 19:28:43,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 47 transitions, 118 flow [2024-11-16 19:28:43,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:28:43,677 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;@36a37616, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:28:43,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:28:43,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:28:43,693 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2024-11-16 19:28:43,693 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:28:43,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:43,693 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] [2024-11-16 19:28:43,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:28:43,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2036144744, now seen corresponding path program 1 times [2024-11-16 19:28:43,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:43,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178014501] [2024-11-16 19:28:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:43,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:43,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:43,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178014501] [2024-11-16 19:28:43,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178014501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:43,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:43,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991816432] [2024-11-16 19:28:43,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:43,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:28:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:28:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:28:43,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-16 19:28:43,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:43,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:43,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-16 19:28:43,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:44,346 INFO L124 PetriNetUnfolderBase]: 3714/5129 cut-off events. [2024-11-16 19:28:44,347 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-11-16 19:28:44,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10321 conditions, 5129 events. 3714/5129 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 27202 event pairs, 2787 based on Foata normal form. 927/5700 useless extension candidates. Maximal degree in co-relation 9238. Up to 4851 conditions per place. [2024-11-16 19:28:44,380 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 32 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-16 19:28:44,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 174 flow [2024-11-16 19:28:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:28:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:28:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 66 transitions. [2024-11-16 19:28:44,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-11-16 19:28:44,391 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 118 flow. Second operand 2 states and 66 transitions. [2024-11-16 19:28:44,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 174 flow [2024-11-16 19:28:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 158 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-16 19:28:44,413 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 94 flow [2024-11-16 19:28:44,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-16 19:28:44,419 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-16 19:28:44,419 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 94 flow [2024-11-16 19:28:44,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:44,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:44,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:44,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:28:44,420 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:28:44,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash -487149940, now seen corresponding path program 1 times [2024-11-16 19:28:44,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:44,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598003525] [2024-11-16 19:28:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:44,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:44,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598003525] [2024-11-16 19:28:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598003525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:44,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:44,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899881029] [2024-11-16 19:28:44,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:44,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:44,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-16 19:28:44,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:44,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:44,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-16 19:28:44,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:45,016 INFO L124 PetriNetUnfolderBase]: 5145/7379 cut-off events. [2024-11-16 19:28:45,016 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-16 19:28:45,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14263 conditions, 7379 events. 5145/7379 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 42423 event pairs, 1020 based on Foata normal form. 1/7022 useless extension candidates. Maximal degree in co-relation 14260. Up to 5288 conditions per place. [2024-11-16 19:28:45,050 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 51 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2024-11-16 19:28:45,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 265 flow [2024-11-16 19:28:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-16 19:28:45,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-11-16 19:28:45,053 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 94 flow. Second operand 3 states and 103 transitions. [2024-11-16 19:28:45,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 265 flow [2024-11-16 19:28:45,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:28:45,057 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 127 flow [2024-11-16 19:28:45,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-16 19:28:45,059 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-16 19:28:45,059 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 127 flow [2024-11-16 19:28:45,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:45,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:45,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1] [2024-11-16 19:28:45,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:28:45,060 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:28:45,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1635378138, now seen corresponding path program 1 times [2024-11-16 19:28:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:45,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594195883] [2024-11-16 19:28:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594195883] [2024-11-16 19:28:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594195883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:45,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:45,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:28:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454515598] [2024-11-16 19:28:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:45,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:28:45,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:28:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:28:45,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-11-16 19:28:45,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-11-16 19:28:45,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:45,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-11-16 19:28:45,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:46,664 INFO L124 PetriNetUnfolderBase]: 17965/24423 cut-off events. [2024-11-16 19:28:46,664 INFO L125 PetriNetUnfolderBase]: For 3106/3217 co-relation queries the response was YES. [2024-11-16 19:28:46,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53697 conditions, 24423 events. 17965/24423 cut-off events. For 3106/3217 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 152296 event pairs, 5377 based on Foata normal form. 0/21845 useless extension candidates. Maximal degree in co-relation 53692. Up to 10741 conditions per place. [2024-11-16 19:28:46,799 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 135 selfloop transitions, 15 changer transitions 0/158 dead transitions. [2024-11-16 19:28:46,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 158 transitions, 736 flow [2024-11-16 19:28:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:28:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:28:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-16 19:28:46,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-11-16 19:28:46,802 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 127 flow. Second operand 6 states and 206 transitions. [2024-11-16 19:28:46,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 158 transitions, 736 flow [2024-11-16 19:28:46,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 158 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:46,808 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 227 flow [2024-11-16 19:28:46,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2024-11-16 19:28:46,809 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-16 19:28:46,809 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 227 flow [2024-11-16 19:28:46,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-11-16 19:28:46,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:46,810 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1] [2024-11-16 19:28:46,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:28:46,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:28:46,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash -166734430, now seen corresponding path program 2 times [2024-11-16 19:28:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:46,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647079067] [2024-11-16 19:28:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:46,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:46,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647079067] [2024-11-16 19:28:46,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647079067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:46,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235456865] [2024-11-16 19:28:46,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:28:46,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:46,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:46,908 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:28:46,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:28:46,974 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:28:46,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:28:46,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:28:46,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:47,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235456865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:28:47,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:28:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-16 19:28:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076557399] [2024-11-16 19:28:47,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:28:47,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:28:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:28:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:28:47,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-11-16 19:28:47,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 227 flow. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:47,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:47,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-11-16 19:28:47,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:49,006 INFO L124 PetriNetUnfolderBase]: 22950/31049 cut-off events. [2024-11-16 19:28:49,007 INFO L125 PetriNetUnfolderBase]: For 17943/17943 co-relation queries the response was YES. [2024-11-16 19:28:49,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83581 conditions, 31049 events. 22950/31049 cut-off events. For 17943/17943 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 196515 event pairs, 1914 based on Foata normal form. 396/31101 useless extension candidates. Maximal degree in co-relation 83572. Up to 5829 conditions per place. [2024-11-16 19:28:49,191 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 276 selfloop transitions, 37 changer transitions 0/321 dead transitions. [2024-11-16 19:28:49,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 321 transitions, 1656 flow [2024-11-16 19:28:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:28:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:28:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 446 transitions. [2024-11-16 19:28:49,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126373626373627 [2024-11-16 19:28:49,194 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 227 flow. Second operand 14 states and 446 transitions. [2024-11-16 19:28:49,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 321 transitions, 1656 flow [2024-11-16 19:28:49,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 321 transitions, 1656 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:28:49,335 INFO L231 Difference]: Finished difference. Result has 75 places, 89 transitions, 497 flow [2024-11-16 19:28:49,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=497, PETRI_PLACES=75, PETRI_TRANSITIONS=89} [2024-11-16 19:28:49,336 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-16 19:28:49,336 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 89 transitions, 497 flow [2024-11-16 19:28:49,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:49,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:49,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1] [2024-11-16 19:28:49,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:28:49,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:49,541 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:28:49,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash 791682202, now seen corresponding path program 3 times [2024-11-16 19:28:49,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957490689] [2024-11-16 19:28:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:49,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:49,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957490689] [2024-11-16 19:28:49,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957490689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:49,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:49,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:28:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517679841] [2024-11-16 19:28:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:49,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:28:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:28:49,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:28:49,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-16 19:28:49,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 89 transitions, 497 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:49,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:49,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-16 19:28:49,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:52,015 INFO L124 PetriNetUnfolderBase]: 29584/40199 cut-off events. [2024-11-16 19:28:52,016 INFO L125 PetriNetUnfolderBase]: For 63787/64067 co-relation queries the response was YES. [2024-11-16 19:28:52,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124898 conditions, 40199 events. 29584/40199 cut-off events. For 63787/64067 co-relation queries the response was YES. Maximal size of possible extension queue 2105. Compared 257700 event pairs, 8417 based on Foata normal form. 276/39412 useless extension candidates. Maximal degree in co-relation 124882. Up to 15467 conditions per place. [2024-11-16 19:28:52,292 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 188 selfloop transitions, 26 changer transitions 0/225 dead transitions. [2024-11-16 19:28:52,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 225 transitions, 1501 flow [2024-11-16 19:28:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:28:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:28:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-11-16 19:28:52,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6236263736263736 [2024-11-16 19:28:52,294 INFO L175 Difference]: Start difference. First operand has 75 places, 89 transitions, 497 flow. Second operand 7 states and 227 transitions. [2024-11-16 19:28:52,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 225 transitions, 1501 flow [2024-11-16 19:28:52,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 225 transitions, 1469 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-11-16 19:28:52,424 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 669 flow [2024-11-16 19:28:52,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=669, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2024-11-16 19:28:52,424 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-16 19:28:52,424 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 669 flow [2024-11-16 19:28:52,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:52,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:52,425 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1] [2024-11-16 19:28:52,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:28:52,425 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:28:52,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1464921954, now seen corresponding path program 4 times [2024-11-16 19:28:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092229343] [2024-11-16 19:28:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:52,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:52,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092229343] [2024-11-16 19:28:52,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092229343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:52,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:52,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:28:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260551633] [2024-11-16 19:28:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:52,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:28:52,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:28:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:28:52,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-11-16 19:28:52,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 669 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-11-16 19:28:52,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:52,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-11-16 19:28:52,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:56,486 INFO L124 PetriNetUnfolderBase]: 45975/61915 cut-off events. [2024-11-16 19:28:56,486 INFO L125 PetriNetUnfolderBase]: For 127102/128096 co-relation queries the response was YES. [2024-11-16 19:28:56,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202357 conditions, 61915 events. 45975/61915 cut-off events. For 127102/128096 co-relation queries the response was YES. Maximal size of possible extension queue 3467. Compared 416459 event pairs, 13798 based on Foata normal form. 660/59390 useless extension candidates. Maximal degree in co-relation 202335. Up to 28182 conditions per place. [2024-11-16 19:28:56,927 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 163 selfloop transitions, 50 changer transitions 0/223 dead transitions. [2024-11-16 19:28:56,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 223 transitions, 1912 flow [2024-11-16 19:28:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:28:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:28:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-11-16 19:28:56,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-11-16 19:28:56,929 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 669 flow. Second operand 5 states and 160 transitions. [2024-11-16 19:28:56,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 223 transitions, 1912 flow [2024-11-16 19:28:57,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 223 transitions, 1902 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-16 19:28:57,562 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1105 flow [2024-11-16 19:28:57,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1105, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-11-16 19:28:57,563 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-11-16 19:28:57,563 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1105 flow [2024-11-16 19:28:57,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-11-16 19:28:57,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:57,563 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1] [2024-11-16 19:28:57,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:28:57,564 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:28:57,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1213498412, now seen corresponding path program 5 times [2024-11-16 19:28:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:57,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724870464] [2024-11-16 19:28:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:57,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:57,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724870464] [2024-11-16 19:28:57,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724870464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:57,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350338762] [2024-11-16 19:28:57,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:28:57,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:57,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:28:57,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:28:57,820 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:28:57,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:28:57,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:28:57,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:57,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350338762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:28:57,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:28:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-16 19:28:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654978374] [2024-11-16 19:28:57,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:28:57,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:28:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:28:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:28:57,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-11-16 19:28:57,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1105 flow. Second operand has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:57,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:57,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-11-16 19:28:57,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:29:02,855 INFO L124 PetriNetUnfolderBase]: 51135/69636 cut-off events. [2024-11-16 19:29:02,855 INFO L125 PetriNetUnfolderBase]: For 206578/208513 co-relation queries the response was YES. [2024-11-16 19:29:03,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255304 conditions, 69636 events. 51135/69636 cut-off events. For 206578/208513 co-relation queries the response was YES. Maximal size of possible extension queue 3766. Compared 477809 event pairs, 10740 based on Foata normal form. 836/68815 useless extension candidates. Maximal degree in co-relation 255278. Up to 22829 conditions per place. [2024-11-16 19:29:03,308 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 268 selfloop transitions, 81 changer transitions 0/357 dead transitions. [2024-11-16 19:29:03,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 357 transitions, 3059 flow [2024-11-16 19:29:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:29:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:29:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2024-11-16 19:29:03,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-16 19:29:03,309 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 1105 flow. Second operand 9 states and 299 transitions. [2024-11-16 19:29:03,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 357 transitions, 3059 flow [2024-11-16 19:29:04,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 357 transitions, 2996 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:29:04,038 INFO L231 Difference]: Finished difference. Result has 107 places, 178 transitions, 1822 flow [2024-11-16 19:29:04,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1822, PETRI_PLACES=107, PETRI_TRANSITIONS=178} [2024-11-16 19:29:04,039 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-11-16 19:29:04,039 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 178 transitions, 1822 flow [2024-11-16 19:29:04,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:29:04,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:29:04,039 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1] [2024-11-16 19:29:04,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:29:04,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-16 19:29:04,243 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:29:04,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:29:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash -439800900, now seen corresponding path program 6 times [2024-11-16 19:29:04,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:29:04,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258712400] [2024-11-16 19:29:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:29:04,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:29:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:29:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:29:04,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:29:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258712400] [2024-11-16 19:29:04,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258712400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:29:04,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:29:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:29:04,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102080253] [2024-11-16 19:29:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:29:04,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:29:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:29:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:29:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:29:04,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-11-16 19:29:04,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 178 transitions, 1822 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-11-16 19:29:04,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:29:04,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-11-16 19:29:04,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:29:09,908 INFO L124 PetriNetUnfolderBase]: 47733/65008 cut-off events. [2024-11-16 19:29:09,908 INFO L125 PetriNetUnfolderBase]: For 286112/287811 co-relation queries the response was YES. [2024-11-16 19:29:10,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262422 conditions, 65008 events. 47733/65008 cut-off events. For 286112/287811 co-relation queries the response was YES. Maximal size of possible extension queue 3463. Compared 449900 event pairs, 15975 based on Foata normal form. 618/64235 useless extension candidates. Maximal degree in co-relation 262389. Up to 32651 conditions per place. [2024-11-16 19:29:10,402 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 173 selfloop transitions, 65 changer transitions 0/246 dead transitions. [2024-11-16 19:29:10,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 246 transitions, 2580 flow [2024-11-16 19:29:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:29:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:29:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-11-16 19:29:10,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-11-16 19:29:10,403 INFO L175 Difference]: Start difference. First operand has 107 places, 178 transitions, 1822 flow. Second operand 5 states and 166 transitions. [2024-11-16 19:29:10,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 246 transitions, 2580 flow [2024-11-16 19:29:12,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 246 transitions, 2498 flow, removed 41 selfloop flow, removed 0 redundant places. [2024-11-16 19:29:12,433 INFO L231 Difference]: Finished difference. Result has 113 places, 172 transitions, 1851 flow [2024-11-16 19:29:12,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1851, PETRI_PLACES=113, PETRI_TRANSITIONS=172} [2024-11-16 19:29:12,434 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-11-16 19:29:12,434 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 172 transitions, 1851 flow [2024-11-16 19:29:12,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-11-16 19:29:12,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:29:12,434 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1] [2024-11-16 19:29:12,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:29:12,434 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:29:12,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:29:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1204276720, now seen corresponding path program 7 times [2024-11-16 19:29:12,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:29:12,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143951838] [2024-11-16 19:29:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:29:12,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:29:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:29:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:29:12,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:29:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143951838] [2024-11-16 19:29:12,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143951838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:29:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337057747] [2024-11-16 19:29:12,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:29:12,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:29:12,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:29:12,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:29:12,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:29:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:29:12,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:29:12,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:29:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:29:12,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:29:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:29:12,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337057747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:29:12,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:29:12,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-16 19:29:12,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392126316] [2024-11-16 19:29:12,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:29:12,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:29:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:29:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:29:12,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:29:12,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-16 19:29:12,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 172 transitions, 1851 flow. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:29:12,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:29:12,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-16 19:29:12,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:29:22,301 INFO L124 PetriNetUnfolderBase]: 90624/122182 cut-off events. [2024-11-16 19:29:22,301 INFO L125 PetriNetUnfolderBase]: For 548276/552979 co-relation queries the response was YES. [2024-11-16 19:29:23,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491614 conditions, 122182 events. 90624/122182 cut-off events. For 548276/552979 co-relation queries the response was YES. Maximal size of possible extension queue 5791. Compared 853972 event pairs, 8533 based on Foata normal form. 267/117341 useless extension candidates. Maximal degree in co-relation 491578. Up to 22268 conditions per place. [2024-11-16 19:29:23,638 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 394 selfloop transitions, 185 changer transitions 0/588 dead transitions. [2024-11-16 19:29:23,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 588 transitions, 6357 flow [2024-11-16 19:29:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:29:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:29:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 432 transitions. [2024-11-16 19:29:23,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2024-11-16 19:29:23,640 INFO L175 Difference]: Start difference. First operand has 113 places, 172 transitions, 1851 flow. Second operand 14 states and 432 transitions. [2024-11-16 19:29:23,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 588 transitions, 6357 flow