./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/unroll-cond-4.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 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:55:16,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:55:16,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:55:16,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:55:16,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:55:16,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:55:16,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:55:16,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:55:16,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:55:16,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:55:16,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:55:16,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:55:16,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:55:16,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:55:16,911 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:55:16,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:55:16,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:55:16,912 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:55:16,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:55:16,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:55:16,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:55:16,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:55:16,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:55:16,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:55:16,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:55:16,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:55:16,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:55:16,919 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:55:16,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:55:16,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:55:16,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:55:16,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:55:16,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:55:16,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:55:16,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:55:16,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:55:16,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:55:16,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:55:16,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:55:16,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:55:16,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:55:16,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:55:16,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 [2024-11-22 13:55:17,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:55:17,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:55:17,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:55:17,263 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:55:17,263 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:55:17,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-11-22 13:55:18,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:55:18,944 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:55:18,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-11-22 13:55:18,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eacfcd28/f144604145674885a7a953ddfdf1abdb/FLAG5acfecf22 [2024-11-22 13:55:19,366 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eacfcd28/f144604145674885a7a953ddfdf1abdb [2024-11-22 13:55:19,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:55:19,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:55:19,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:55:19,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:55:19,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:55:19,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6431cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19, skipping insertion in model container [2024-11-22 13:55:19,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,422 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:55:19,635 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/unroll-cond-4.wvr.c[2834,2847] [2024-11-22 13:55:19,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:55:19,653 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:55:19,674 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/unroll-cond-4.wvr.c[2834,2847] [2024-11-22 13:55:19,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:55:19,696 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:55:19,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19 WrapperNode [2024-11-22 13:55:19,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:55:19,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:55:19,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:55:19,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:55:19,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,742 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 176 [2024-11-22 13:55:19,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:55:19,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:55:19,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:55:19,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:55:19,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,774 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-22 13:55:19,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,789 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:55:19,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:55:19,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:55:19,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:55:19,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (1/1) ... [2024-11-22 13:55:19,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:55:19,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:19,834 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) [2024-11-22 13:55:19,837 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 [2024-11-22 13:55:19,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:55:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:55:19,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:55:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:55:19,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:55:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:55:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:55:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:55:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:55:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:55:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:55:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:55:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:55:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:55:19,881 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:55:19,978 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:55:19,980 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:55:20,325 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:55:20,326 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:55:20,690 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:55:20,692 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 13:55:20,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:55:20 BoogieIcfgContainer [2024-11-22 13:55:20,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:55:20,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:55:20,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:55:20,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:55:20,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:55:19" (1/3) ... [2024-11-22 13:55:20,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdaab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:55:20, skipping insertion in model container [2024-11-22 13:55:20,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:19" (2/3) ... [2024-11-22 13:55:20,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdaab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:55:20, skipping insertion in model container [2024-11-22 13:55:20,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:55:20" (3/3) ... [2024-11-22 13:55:20,708 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2024-11-22 13:55:20,732 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:55:20,732 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:55:20,733 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:55:20,792 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:55:20,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2024-11-22 13:55:20,867 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2024-11-22 13:55:20,867 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:55:20,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 3/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-22 13:55:20,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2024-11-22 13:55:20,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2024-11-22 13:55:20,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:55:20,893 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;@2b06ee6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:55:20,893 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:55:20,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:55:20,901 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-11-22 13:55:20,901 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:55:20,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:20,904 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:20,905 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:20,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1952885711, now seen corresponding path program 1 times [2024-11-22 13:55:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:20,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669350986] [2024-11-22 13:55:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:55:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:21,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:21,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669350986] [2024-11-22 13:55:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669350986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:21,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:55:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930587072] [2024-11-22 13:55:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:21,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:55:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:21,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:55:21,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:55:21,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:55:21,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-22 13:55:21,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:21,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:55:21,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:21,722 INFO L124 PetriNetUnfolderBase]: 38/71 cut-off events. [2024-11-22 13:55:21,723 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-22 13:55:21,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 71 events. 38/71 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 120 event pairs, 22 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 120. Up to 70 conditions per place. [2024-11-22 13:55:21,725 INFO L140 encePairwiseOnDemand]: 17/20 looper letters, 15 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2024-11-22 13:55:21,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 82 flow [2024-11-22 13:55:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:55:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:55:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2024-11-22 13:55:21,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-22 13:55:21,743 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 27 transitions. [2024-11-22 13:55:21,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 82 flow [2024-11-22 13:55:21,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:55:21,749 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2024-11-22 13:55:21,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2024-11-22 13:55:21,754 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2024-11-22 13:55:21,756 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2024-11-22 13:55:21,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-22 13:55:21,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:21,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:21,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:55:21,757 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:21,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1234725516, now seen corresponding path program 1 times [2024-11-22 13:55:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:21,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187764127] [2024-11-22 13:55:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:55:21,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:22,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:22,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187764127] [2024-11-22 13:55:22,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187764127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:22,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:22,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:55:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420275750] [2024-11-22 13:55:22,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:22,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:55:22,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:55:22,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:55:22,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:55:22,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:22,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:22,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:55:22,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:22,303 INFO L124 PetriNetUnfolderBase]: 65/123 cut-off events. [2024-11-22 13:55:22,303 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:55:22,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 123 events. 65/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 324 event pairs, 22 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 248. Up to 71 conditions per place. [2024-11-22 13:55:22,306 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 32 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-11-22 13:55:22,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 169 flow [2024-11-22 13:55:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:55:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:55:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-11-22 13:55:22,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-11-22 13:55:22,309 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 52 transitions. [2024-11-22 13:55:22,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 169 flow [2024-11-22 13:55:22,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 38 transitions, 165 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:55:22,311 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2024-11-22 13:55:22,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-11-22 13:55:22,312 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2024-11-22 13:55:22,313 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2024-11-22 13:55:22,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:22,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:22,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:22,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:55:22,315 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:22,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1963681990, now seen corresponding path program 2 times [2024-11-22 13:55:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333187777] [2024-11-22 13:55:22,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:22,377 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:55:22,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:22,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333187777] [2024-11-22 13:55:22,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333187777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:22,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:22,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:55:22,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382394486] [2024-11-22 13:55:22,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:22,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:55:22,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:55:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:55:22,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:55:22,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:22,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:22,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:55:22,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:22,777 INFO L124 PetriNetUnfolderBase]: 100/190 cut-off events. [2024-11-22 13:55:22,778 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-22 13:55:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 190 events. 100/190 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 581 event pairs, 39 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 531. Up to 120 conditions per place. [2024-11-22 13:55:22,782 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-22 13:55:22,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 242 flow [2024-11-22 13:55:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:55:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:55:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-11-22 13:55:22,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-22 13:55:22,785 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 48 transitions. [2024-11-22 13:55:22,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 242 flow [2024-11-22 13:55:22,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 225 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-22 13:55:22,791 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2024-11-22 13:55:22,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-11-22 13:55:22,792 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2024-11-22 13:55:22,793 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2024-11-22 13:55:22,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:22,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:22,794 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:22,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:55:22,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:22,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash -315186528, now seen corresponding path program 3 times [2024-11-22 13:55:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:22,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486030550] [2024-11-22 13:55:22,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:22,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:22,849 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:55:22,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:23,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:23,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486030550] [2024-11-22 13:55:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486030550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:23,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:55:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277949010] [2024-11-22 13:55:23,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:23,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:55:23,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:23,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:55:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:55:23,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:55:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:23,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:23,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:55:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:23,248 INFO L124 PetriNetUnfolderBase]: 109/204 cut-off events. [2024-11-22 13:55:23,249 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-11-22 13:55:23,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 204 events. 109/204 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 654 event pairs, 39 based on Foata normal form. 3/182 useless extension candidates. Maximal degree in co-relation 689. Up to 111 conditions per place. [2024-11-22 13:55:23,253 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 33 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-11-22 13:55:23,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 307 flow [2024-11-22 13:55:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:55:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:55:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-11-22 13:55:23,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-11-22 13:55:23,257 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 52 transitions. [2024-11-22 13:55:23,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 307 flow [2024-11-22 13:55:23,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 283 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-22 13:55:23,264 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2024-11-22 13:55:23,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-22 13:55:23,266 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2024-11-22 13:55:23,267 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2024-11-22 13:55:23,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:23,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:23,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:23,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:55:23,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:23,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1798077986, now seen corresponding path program 4 times [2024-11-22 13:55:23,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:23,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897901996] [2024-11-22 13:55:23,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:23,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:23,321 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:23,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:23,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:23,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897901996] [2024-11-22 13:55:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897901996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:23,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:23,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:55:23,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832032553] [2024-11-22 13:55:23,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:23,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:55:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:55:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:55:23,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:55:23,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:23,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:23,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:55:23,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:23,653 INFO L124 PetriNetUnfolderBase]: 106/201 cut-off events. [2024-11-22 13:55:23,654 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2024-11-22 13:55:23,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 201 events. 106/201 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 640 event pairs, 46 based on Foata normal form. 3/179 useless extension candidates. Maximal degree in co-relation 752. Up to 160 conditions per place. [2024-11-22 13:55:23,658 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 29 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2024-11-22 13:55:23,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 365 flow [2024-11-22 13:55:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:55:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:55:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-22 13:55:23,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-22 13:55:23,660 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 47 transitions. [2024-11-22 13:55:23,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 365 flow [2024-11-22 13:55:23,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 352 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:55:23,667 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2024-11-22 13:55:23,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-22 13:55:23,668 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2024-11-22 13:55:23,670 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2024-11-22 13:55:23,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:23,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:23,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:23,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:55:23,671 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:23,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash -265137648, now seen corresponding path program 5 times [2024-11-22 13:55:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714455496] [2024-11-22 13:55:23,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:23,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:23,715 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:23,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:23,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714455496] [2024-11-22 13:55:23,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714455496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:23,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:23,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:55:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446809516] [2024-11-22 13:55:23,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:23,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:55:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:55:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:55:23,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:55:23,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:23,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:23,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:55:23,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:24,070 INFO L124 PetriNetUnfolderBase]: 107/204 cut-off events. [2024-11-22 13:55:24,070 INFO L125 PetriNetUnfolderBase]: For 641/641 co-relation queries the response was YES. [2024-11-22 13:55:24,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 204 events. 107/204 cut-off events. For 641/641 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 668 event pairs, 34 based on Foata normal form. 2/181 useless extension candidates. Maximal degree in co-relation 852. Up to 113 conditions per place. [2024-11-22 13:55:24,072 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 35 selfloop transitions, 14 changer transitions 0/50 dead transitions. [2024-11-22 13:55:24,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 432 flow [2024-11-22 13:55:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:55:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:55:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2024-11-22 13:55:24,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-22 13:55:24,074 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 51 transitions. [2024-11-22 13:55:24,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 432 flow [2024-11-22 13:55:24,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 378 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-22 13:55:24,079 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2024-11-22 13:55:24,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-11-22 13:55:24,080 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2024-11-22 13:55:24,080 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2024-11-22 13:55:24,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:24,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:24,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:24,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:55:24,081 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:24,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:24,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1853489246, now seen corresponding path program 6 times [2024-11-22 13:55:24,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:24,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605429402] [2024-11-22 13:55:24,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:24,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:24,111 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:55:24,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605429402] [2024-11-22 13:55:24,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605429402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:24,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:55:24,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:55:24,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453965813] [2024-11-22 13:55:24,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:24,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:55:24,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:55:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:55:24,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:55:24,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:24,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:24,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:55:24,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:24,373 INFO L124 PetriNetUnfolderBase]: 106/197 cut-off events. [2024-11-22 13:55:24,373 INFO L125 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2024-11-22 13:55:24,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 197 events. 106/197 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 613 event pairs, 45 based on Foata normal form. 2/174 useless extension candidates. Maximal degree in co-relation 798. Up to 154 conditions per place. [2024-11-22 13:55:24,376 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 31 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-11-22 13:55:24,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 404 flow [2024-11-22 13:55:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:55:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:55:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-22 13:55:24,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-22 13:55:24,377 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 47 transitions. [2024-11-22 13:55:24,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 404 flow [2024-11-22 13:55:24,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 370 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 13:55:24,382 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2024-11-22 13:55:24,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-11-22 13:55:24,383 INFO L277 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2024-11-22 13:55:24,383 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2024-11-22 13:55:24,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-22 13:55:24,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:24,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:24,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:55:24,384 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:24,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2116690811, now seen corresponding path program 1 times [2024-11-22 13:55:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634778344] [2024-11-22 13:55:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:55:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:24,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:24,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634778344] [2024-11-22 13:55:24,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634778344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321680644] [2024-11-22 13:55:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:55:24,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:24,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:24,704 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) [2024-11-22 13:55:24,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:55:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:24,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 13:55:24,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:24,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 13:55:25,298 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-22 13:55:25,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 169 [2024-11-22 13:55:35,958 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 13:55:43,987 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 13:56:08,116 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 13:56:24,204 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 13:56:32,216 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 13:56:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:56:32,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:56:38,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-22 13:56:38,720 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:56:38,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-22 13:56:38,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2024-11-22 13:56:38,816 INFO L349 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2024-11-22 13:56:38,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 239 treesize of output 193 [2024-11-22 13:56:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:56:39,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321680644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:56:39,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:56:39,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-11-22 13:56:39,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042777777] [2024-11-22 13:56:39,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:56:39,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 13:56:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:56:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 13:56:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-22 13:56:39,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2024-11-22 13:56:39,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:56:39,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:56:39,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2024-11-22 13:56:39,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand