./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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-more-sorted.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 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:48:21,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:48:21,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:48:21,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:48:21,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:48:21,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:48:21,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:48:21,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:48:21,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:48:21,827 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:48:21,828 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:48:21,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:48:21,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:48:21,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:48:21,830 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:48:21,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:48:21,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:48:21,831 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:48:21,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:48:21,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:48:21,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:48:21,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:48:21,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:48:21,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:48:21,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:48:21,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:48:21,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:48:21,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:48:21,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:48:21,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:48:21,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:48:21,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:48:21,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:48:21,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:48:21,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:48:21,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:48:21,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:48:21,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:48:21,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:48:21,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:48:21,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:48:21,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:48:21,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2024-11-09 02:48:22,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:48:22,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:48:22,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:48:22,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:48:22,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:48:22,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2024-11-09 02:48:23,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:48:23,709 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:48:23,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2024-11-09 02:48:23,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46292e21a/2813d644787b463b8c510e7aa06100fc/FLAGbe68a6468 [2024-11-09 02:48:23,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46292e21a/2813d644787b463b8c510e7aa06100fc [2024-11-09 02:48:23,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:48:23,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:48:23,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:48:23,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:48:23,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:48:23,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:48:23" (1/1) ... [2024-11-09 02:48:23,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9b8aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:23, skipping insertion in model container [2024-11-09 02:48:23,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:48:23" (1/1) ... [2024-11-09 02:48:23,758 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:48:23,963 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-more-sorted.wvr.c[2473,2486] [2024-11-09 02:48:23,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:48:23,987 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:48:24,003 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-more-sorted.wvr.c[2473,2486] [2024-11-09 02:48:24,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:48:24,031 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:48:24,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24 WrapperNode [2024-11-09 02:48:24,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:48:24,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:48:24,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:48:24,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:48:24,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,065 INFO L138 Inliner]: procedures = 23, calls = 22, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2024-11-09 02:48:24,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:48:24,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:48:24,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:48:24,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:48:24,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,106 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2024-11-09 02:48:24,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:48:24,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:48:24,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:48:24,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:48:24,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (1/1) ... [2024-11-09 02:48:24,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:48:24,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:24,182 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) [2024-11-09 02:48:24,185 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 [2024-11-09 02:48:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:48:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:48:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:48:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:48:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:48:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:48:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:48:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:48:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:48:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:48:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:48:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:48:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:48:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:48:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:48:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:48:24,246 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:48:24,353 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:48:24,356 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:48:24,637 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:48:24,637 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:48:24,867 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:48:24,872 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:48:24,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:48:24 BoogieIcfgContainer [2024-11-09 02:48:24,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:48:24,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:48:24,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:48:24,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:48:24,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:48:23" (1/3) ... [2024-11-09 02:48:24,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3127e5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:48:24, skipping insertion in model container [2024-11-09 02:48:24,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:24" (2/3) ... [2024-11-09 02:48:24,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3127e5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:48:24, skipping insertion in model container [2024-11-09 02:48:24,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:48:24" (3/3) ... [2024-11-09 02:48:24,891 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2024-11-09 02:48:24,912 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:48:24,912 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:48:24,912 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:48:25,003 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:48:25,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 27 transitions, 75 flow [2024-11-09 02:48:25,057 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-09 02:48:25,058 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:48:25,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 4/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-09 02:48:25,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 27 transitions, 75 flow [2024-11-09 02:48:25,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 23 transitions, 64 flow [2024-11-09 02:48:25,076 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:48:25,082 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;@4e27b212, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:48:25,082 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:48:25,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:48:25,091 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-09 02:48:25,091 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:48:25,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:25,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:25,092 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 1 more)] === [2024-11-09 02:48:25,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1732159752, now seen corresponding path program 1 times [2024-11-09 02:48:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100558928] [2024-11-09 02:48:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:25,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100558928] [2024-11-09 02:48:25,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100558928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:48:25,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:48:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:48:25,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710009690] [2024-11-09 02:48:25,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:25,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:48:25,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:48:25,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:48:25,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-09 02:48:25,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:25,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:25,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:25,719 INFO L124 PetriNetUnfolderBase]: 200/296 cut-off events. [2024-11-09 02:48:25,719 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-09 02:48:25,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 296 events. 200/296 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 689 event pairs, 124 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 534. Up to 295 conditions per place. [2024-11-09 02:48:25,735 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 21 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2024-11-09 02:48:25,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 112 flow [2024-11-09 02:48:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:48:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:48:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2024-11-09 02:48:25,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-09 02:48:25,748 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 64 flow. Second operand 3 states and 36 transitions. [2024-11-09 02:48:25,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 112 flow [2024-11-09 02:48:25,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:48:25,755 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 64 flow [2024-11-09 02:48:25,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2024-11-09 02:48:25,761 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-09 02:48:25,761 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 64 flow [2024-11-09 02:48:25,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-09 02:48:25,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:25,762 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] [2024-11-09 02:48:25,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:48:25,762 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 1 more)] === [2024-11-09 02:48:25,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash -776271565, now seen corresponding path program 1 times [2024-11-09 02:48:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416760385] [2024-11-09 02:48:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:26,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:26,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416760385] [2024-11-09 02:48:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416760385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:48:26,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:48:26,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:48:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686562905] [2024-11-09 02:48:26,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:26,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:48:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:48:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:48:26,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:26,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-09 02:48:26,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:26,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:26,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:26,279 INFO L124 PetriNetUnfolderBase]: 387/568 cut-off events. [2024-11-09 02:48:26,280 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-09 02:48:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 568 events. 387/568 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1771 event pairs, 124 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1156. Up to 352 conditions per place. [2024-11-09 02:48:26,286 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2024-11-09 02:48:26,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 183 flow [2024-11-09 02:48:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:48:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:48:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-09 02:48:26,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-09 02:48:26,292 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 64 flow. Second operand 3 states and 52 transitions. [2024-11-09 02:48:26,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 183 flow [2024-11-09 02:48:26,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 179 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:48:26,298 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 86 flow [2024-11-09 02:48:26,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2024-11-09 02:48:26,300 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2024-11-09 02:48:26,300 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 86 flow [2024-11-09 02:48:26,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-09 02:48:26,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:26,300 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:26,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:48:26,301 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 1 more)] === [2024-11-09 02:48:26,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2008208866, now seen corresponding path program 1 times [2024-11-09 02:48:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129102822] [2024-11-09 02:48:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129102822] [2024-11-09 02:48:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129102822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866124042] [2024-11-09 02:48:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:26,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:26,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:26,409 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) [2024-11-09 02:48:26,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:48:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:26,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:26,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:26,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866124042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:26,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:26,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-09 02:48:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367899047] [2024-11-09 02:48:26,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:26,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:48:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:48:26,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:48:26,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:26,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 86 flow. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 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) [2024-11-09 02:48:26,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:26,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:26,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:26,974 INFO L124 PetriNetUnfolderBase]: 705/1058 cut-off events. [2024-11-09 02:48:26,974 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-11-09 02:48:26,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 1058 events. 705/1058 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3895 event pairs, 397 based on Foata normal form. 50/1108 useless extension candidates. Maximal degree in co-relation 1376. Up to 567 conditions per place. [2024-11-09 02:48:26,979 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 54 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-11-09 02:48:26,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 61 transitions, 311 flow [2024-11-09 02:48:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:48:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:48:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-11-09 02:48:26,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-11-09 02:48:26,981 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 86 flow. Second operand 6 states and 78 transitions. [2024-11-09 02:48:26,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 61 transitions, 311 flow [2024-11-09 02:48:26,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 61 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:48:26,983 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 128 flow [2024-11-09 02:48:26,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-09 02:48:26,984 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-11-09 02:48:26,984 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 128 flow [2024-11-09 02:48:26,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 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) [2024-11-09 02:48:26,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:26,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:27,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:27,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:27,189 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 1 more)] === [2024-11-09 02:48:27,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1683592086, now seen corresponding path program 1 times [2024-11-09 02:48:27,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:27,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771100106] [2024-11-09 02:48:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:27,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771100106] [2024-11-09 02:48:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771100106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955621253] [2024-11-09 02:48:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:27,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:27,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:27,267 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) [2024-11-09 02:48:27,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:48:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:27,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:48:27,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:27,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955621253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:27,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:27,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 02:48:27,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585114208] [2024-11-09 02:48:27,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:27,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:48:27,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:48:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:48:27,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:27,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 128 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-11-09 02:48:27,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:27,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:27,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:27,742 INFO L124 PetriNetUnfolderBase]: 611/932 cut-off events. [2024-11-09 02:48:27,742 INFO L125 PetriNetUnfolderBase]: For 578/578 co-relation queries the response was YES. [2024-11-09 02:48:27,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 932 events. 611/932 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3429 event pairs, 379 based on Foata normal form. 38/970 useless extension candidates. Maximal degree in co-relation 1468. Up to 567 conditions per place. [2024-11-09 02:48:27,747 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 51 selfloop transitions, 6 changer transitions 0/58 dead transitions. [2024-11-09 02:48:27,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 322 flow [2024-11-09 02:48:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:48:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:48:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-11-09 02:48:27,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-11-09 02:48:27,749 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 128 flow. Second operand 6 states and 77 transitions. [2024-11-09 02:48:27,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 322 flow [2024-11-09 02:48:27,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 312 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 02:48:27,751 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 147 flow [2024-11-09 02:48:27,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-09 02:48:27,752 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-11-09 02:48:27,752 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 147 flow [2024-11-09 02:48:27,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-11-09 02:48:27,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:27,753 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:27,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:27,953 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,SelfDestructingSolverStorable3 [2024-11-09 02:48:27,954 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 1 more)] === [2024-11-09 02:48:27,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1624933821, now seen corresponding path program 1 times [2024-11-09 02:48:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:27,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646324793] [2024-11-09 02:48:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:28,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:28,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646324793] [2024-11-09 02:48:28,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646324793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:28,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890986749] [2024-11-09 02:48:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:28,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:28,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:28,048 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) [2024-11-09 02:48:28,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:48:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:28,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:28,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:28,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:28,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890986749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:28,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:28,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 02:48:28,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093385502] [2024-11-09 02:48:28,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:28,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:48:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:48:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:48:28,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:28,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 147 flow. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 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) [2024-11-09 02:48:28,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:28,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:28,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:28,466 INFO L124 PetriNetUnfolderBase]: 511/785 cut-off events. [2024-11-09 02:48:28,466 INFO L125 PetriNetUnfolderBase]: For 815/815 co-relation queries the response was YES. [2024-11-09 02:48:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 785 events. 511/785 cut-off events. For 815/815 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2727 event pairs, 333 based on Foata normal form. 22/807 useless extension candidates. Maximal degree in co-relation 1618. Up to 567 conditions per place. [2024-11-09 02:48:28,469 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 3 changer transitions 23/51 dead transitions. [2024-11-09 02:48:28,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 307 flow [2024-11-09 02:48:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:48:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:48:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-11-09 02:48:28,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-09 02:48:28,470 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 147 flow. Second operand 6 states and 72 transitions. [2024-11-09 02:48:28,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 307 flow [2024-11-09 02:48:28,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 300 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:48:28,472 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 118 flow [2024-11-09 02:48:28,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2024-11-09 02:48:28,473 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-11-09 02:48:28,473 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 118 flow [2024-11-09 02:48:28,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 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) [2024-11-09 02:48:28,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:28,474 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] [2024-11-09 02:48:28,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:28,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:28,678 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 1 more)] === [2024-11-09 02:48:28,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1150888765, now seen corresponding path program 2 times [2024-11-09 02:48:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:28,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085580077] [2024-11-09 02:48:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:28,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085580077] [2024-11-09 02:48:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085580077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436351811] [2024-11-09 02:48:28,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:28,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:28,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:48:28,925 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:28,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:28,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:48:28,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:29,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436351811] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:29,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:29,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2024-11-09 02:48:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756169345] [2024-11-09 02:48:29,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:29,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:48:29,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:48:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:48:29,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:29,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 118 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:29,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:29,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:29,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:29,291 INFO L124 PetriNetUnfolderBase]: 517/765 cut-off events. [2024-11-09 02:48:29,292 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2024-11-09 02:48:29,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 765 events. 517/765 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2648 event pairs, 150 based on Foata normal form. 14/779 useless extension candidates. Maximal degree in co-relation 2324. Up to 379 conditions per place. [2024-11-09 02:48:29,295 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 55 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-11-09 02:48:29,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 402 flow [2024-11-09 02:48:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:48:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:48:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-09 02:48:29,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41203703703703703 [2024-11-09 02:48:29,297 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 118 flow. Second operand 8 states and 89 transitions. [2024-11-09 02:48:29,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 402 flow [2024-11-09 02:48:29,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 66 transitions, 332 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-11-09 02:48:29,300 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 149 flow [2024-11-09 02:48:29,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-09 02:48:29,301 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-11-09 02:48:29,301 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 149 flow [2024-11-09 02:48:29,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:29,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:29,301 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] [2024-11-09 02:48:29,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:48:29,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:29,502 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 1 more)] === [2024-11-09 02:48:29,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash 274742385, now seen corresponding path program 3 times [2024-11-09 02:48:29,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:29,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029297954] [2024-11-09 02:48:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029297954] [2024-11-09 02:48:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029297954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964872517] [2024-11-09 02:48:29,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:48:29,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:29,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:29,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:29,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:48:29,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:48:29,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:29,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:48:29,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:29,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964872517] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:29,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:29,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2024-11-09 02:48:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962154222] [2024-11-09 02:48:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:29,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:48:29,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:29,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:48:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:48:29,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:29,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 149 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:29,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:29,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:29,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:30,045 INFO L124 PetriNetUnfolderBase]: 678/1006 cut-off events. [2024-11-09 02:48:30,045 INFO L125 PetriNetUnfolderBase]: For 907/907 co-relation queries the response was YES. [2024-11-09 02:48:30,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1006 events. 678/1006 cut-off events. For 907/907 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3615 event pairs, 240 based on Foata normal form. 12/1018 useless extension candidates. Maximal degree in co-relation 3023. Up to 593 conditions per place. [2024-11-09 02:48:30,050 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 57 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-11-09 02:48:30,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 447 flow [2024-11-09 02:48:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:48:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:48:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-11-09 02:48:30,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39351851851851855 [2024-11-09 02:48:30,051 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 149 flow. Second operand 8 states and 85 transitions. [2024-11-09 02:48:30,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 447 flow [2024-11-09 02:48:30,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 71 transitions, 410 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:30,054 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 206 flow [2024-11-09 02:48:30,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-11-09 02:48:30,054 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-11-09 02:48:30,055 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 206 flow [2024-11-09 02:48:30,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:30,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:30,055 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] [2024-11-09 02:48:30,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:30,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:30,256 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 1 more)] === [2024-11-09 02:48:30,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1922043421, now seen corresponding path program 4 times [2024-11-09 02:48:30,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:30,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708585483] [2024-11-09 02:48:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:30,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:30,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708585483] [2024-11-09 02:48:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708585483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:30,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734064081] [2024-11-09 02:48:30,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:48:30,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:30,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:30,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:30,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:48:30,472 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:48:30,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:30,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:48:30,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:30,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:30,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734064081] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:30,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:30,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-11-09 02:48:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095124869] [2024-11-09 02:48:30,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:30,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:48:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:48:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:48:30,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:30,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:30,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:30,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:30,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:30,864 INFO L124 PetriNetUnfolderBase]: 784/1168 cut-off events. [2024-11-09 02:48:30,864 INFO L125 PetriNetUnfolderBase]: For 1869/1869 co-relation queries the response was YES. [2024-11-09 02:48:30,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4080 conditions, 1168 events. 784/1168 cut-off events. For 1869/1869 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4424 event pairs, 319 based on Foata normal form. 14/1182 useless extension candidates. Maximal degree in co-relation 4048. Up to 820 conditions per place. [2024-11-09 02:48:30,871 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 56 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-11-09 02:48:30,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 531 flow [2024-11-09 02:48:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:48:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:48:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-11-09 02:48:30,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-11-09 02:48:30,872 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 206 flow. Second operand 8 states and 87 transitions. [2024-11-09 02:48:30,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 531 flow [2024-11-09 02:48:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 488 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:30,876 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 303 flow [2024-11-09 02:48:30,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=303, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-09 02:48:30,877 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-11-09 02:48:30,877 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 303 flow [2024-11-09 02:48:30,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:30,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:30,878 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] [2024-11-09 02:48:30,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:48:31,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:31,079 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 1 more)] === [2024-11-09 02:48:31,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash 17904049, now seen corresponding path program 5 times [2024-11-09 02:48:31,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114682413] [2024-11-09 02:48:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114682413] [2024-11-09 02:48:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114682413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857322743] [2024-11-09 02:48:31,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:48:31,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:31,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:31,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:31,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:48:31,227 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:31,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:31,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:48:31,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:31,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:31,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857322743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:31,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:31,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 02:48:31,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734499301] [2024-11-09 02:48:31,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:31,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:48:31,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:48:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:48:31,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:31,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 303 flow. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 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) [2024-11-09 02:48:31,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:31,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:31,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:31,859 INFO L124 PetriNetUnfolderBase]: 770/1154 cut-off events. [2024-11-09 02:48:31,859 INFO L125 PetriNetUnfolderBase]: For 3005/3005 co-relation queries the response was YES. [2024-11-09 02:48:31,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 1154 events. 770/1154 cut-off events. For 3005/3005 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4485 event pairs, 143 based on Foata normal form. 14/1168 useless extension candidates. Maximal degree in co-relation 4412. Up to 385 conditions per place. [2024-11-09 02:48:31,867 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 92 selfloop transitions, 72 changer transitions 0/165 dead transitions. [2024-11-09 02:48:31,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 165 transitions, 1348 flow [2024-11-09 02:48:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:48:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:48:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 187 transitions. [2024-11-09 02:48:31,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3645224171539961 [2024-11-09 02:48:31,869 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 303 flow. Second operand 19 states and 187 transitions. [2024-11-09 02:48:31,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 165 transitions, 1348 flow [2024-11-09 02:48:31,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 165 transitions, 1226 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-11-09 02:48:31,877 INFO L231 Difference]: Finished difference. Result has 66 places, 100 transitions, 840 flow [2024-11-09 02:48:31,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=840, PETRI_PLACES=66, PETRI_TRANSITIONS=100} [2024-11-09 02:48:31,878 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-11-09 02:48:31,878 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 100 transitions, 840 flow [2024-11-09 02:48:31,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 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) [2024-11-09 02:48:31,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:31,879 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] [2024-11-09 02:48:31,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:48:32,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:32,080 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:32,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1411334113, now seen corresponding path program 6 times [2024-11-09 02:48:32,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:32,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511787689] [2024-11-09 02:48:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:32,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:32,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:32,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511787689] [2024-11-09 02:48:32,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511787689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:32,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685362640] [2024-11-09 02:48:32,161 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:48:32,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:32,164 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:32,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:48:32,237 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:48:32,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:32,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:48:32,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:32,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685362640] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:32,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:32,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2024-11-09 02:48:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772766075] [2024-11-09 02:48:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:32,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:48:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:48:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:48:32,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:32,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 100 transitions, 840 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:32,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:32,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:32,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:32,618 INFO L124 PetriNetUnfolderBase]: 753/1119 cut-off events. [2024-11-09 02:48:32,619 INFO L125 PetriNetUnfolderBase]: For 3018/3018 co-relation queries the response was YES. [2024-11-09 02:48:32,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 1119 events. 753/1119 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4205 event pairs, 234 based on Foata normal form. 12/1131 useless extension candidates. Maximal degree in co-relation 4741. Up to 806 conditions per place. [2024-11-09 02:48:32,625 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 85 selfloop transitions, 47 changer transitions 0/133 dead transitions. [2024-11-09 02:48:32,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 133 transitions, 1250 flow [2024-11-09 02:48:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:48:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:48:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-11-09 02:48:32,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39094650205761317 [2024-11-09 02:48:32,626 INFO L175 Difference]: Start difference. First operand has 66 places, 100 transitions, 840 flow. Second operand 9 states and 95 transitions. [2024-11-09 02:48:32,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 133 transitions, 1250 flow [2024-11-09 02:48:32,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 1113 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-11-09 02:48:32,637 INFO L231 Difference]: Finished difference. Result has 70 places, 104 transitions, 848 flow [2024-11-09 02:48:32,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=848, PETRI_PLACES=70, PETRI_TRANSITIONS=104} [2024-11-09 02:48:32,638 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-11-09 02:48:32,638 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 104 transitions, 848 flow [2024-11-09 02:48:32,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:32,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:32,638 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] [2024-11-09 02:48:32,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:32,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 02:48:32,842 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:32,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1700439657, now seen corresponding path program 7 times [2024-11-09 02:48:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850331590] [2024-11-09 02:48:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850331590] [2024-11-09 02:48:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850331590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470934845] [2024-11-09 02:48:32,928 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:48:32,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:32,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:32,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:32,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:48:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:33,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:48:33,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:33,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:33,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470934845] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:33,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:33,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2024-11-09 02:48:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408215498] [2024-11-09 02:48:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:33,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:48:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:48:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:48:33,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:33,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 104 transitions, 848 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:33,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:33,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:33,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:33,413 INFO L124 PetriNetUnfolderBase]: 736/1084 cut-off events. [2024-11-09 02:48:33,414 INFO L125 PetriNetUnfolderBase]: For 3262/3262 co-relation queries the response was YES. [2024-11-09 02:48:33,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 1084 events. 736/1084 cut-off events. For 3262/3262 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3978 event pairs, 211 based on Foata normal form. 12/1096 useless extension candidates. Maximal degree in co-relation 4616. Up to 619 conditions per place. [2024-11-09 02:48:33,419 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 68 selfloop transitions, 51 changer transitions 0/120 dead transitions. [2024-11-09 02:48:33,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 1122 flow [2024-11-09 02:48:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:48:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:48:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-11-09 02:48:33,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2024-11-09 02:48:33,420 INFO L175 Difference]: Start difference. First operand has 70 places, 104 transitions, 848 flow. Second operand 8 states and 86 transitions. [2024-11-09 02:48:33,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 1122 flow [2024-11-09 02:48:33,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 1016 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-09 02:48:33,427 INFO L231 Difference]: Finished difference. Result has 68 places, 100 transitions, 812 flow [2024-11-09 02:48:33,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=68, PETRI_TRANSITIONS=100} [2024-11-09 02:48:33,428 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-11-09 02:48:33,428 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 100 transitions, 812 flow [2024-11-09 02:48:33,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-09 02:48:33,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:33,428 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] [2024-11-09 02:48:33,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 02:48:33,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:33,629 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:33,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:33,630 INFO L85 PathProgramCache]: Analyzing trace with hash -490160248, now seen corresponding path program 2 times [2024-11-09 02:48:33,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:33,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560873453] [2024-11-09 02:48:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:33,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560873453] [2024-11-09 02:48:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560873453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956400407] [2024-11-09 02:48:33,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:33,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:33,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:33,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:33,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:48:33,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:33,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:33,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:48:33,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:33,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:33,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956400407] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:33,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:33,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-09 02:48:33,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749016841] [2024-11-09 02:48:33,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:33,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:48:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:33,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:48:33,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:48:33,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:33,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 100 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-09 02:48:33,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:33,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:33,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:33,953 INFO L124 PetriNetUnfolderBase]: 721/1054 cut-off events. [2024-11-09 02:48:33,953 INFO L125 PetriNetUnfolderBase]: For 3014/3014 co-relation queries the response was YES. [2024-11-09 02:48:33,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 1054 events. 721/1054 cut-off events. For 3014/3014 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3831 event pairs, 207 based on Foata normal form. 70/1124 useless extension candidates. Maximal degree in co-relation 4296. Up to 816 conditions per place. [2024-11-09 02:48:33,959 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 114 selfloop transitions, 11 changer transitions 0/126 dead transitions. [2024-11-09 02:48:33,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 126 transitions, 1259 flow [2024-11-09 02:48:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:48:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:48:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-11-09 02:48:33,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3765432098765432 [2024-11-09 02:48:33,961 INFO L175 Difference]: Start difference. First operand has 68 places, 100 transitions, 812 flow. Second operand 6 states and 61 transitions. [2024-11-09 02:48:33,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 126 transitions, 1259 flow [2024-11-09 02:48:33,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 126 transitions, 1135 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-09 02:48:33,969 INFO L231 Difference]: Finished difference. Result has 67 places, 101 transitions, 750 flow [2024-11-09 02:48:33,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=67, PETRI_TRANSITIONS=101} [2024-11-09 02:48:33,969 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-11-09 02:48:33,969 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 101 transitions, 750 flow [2024-11-09 02:48:33,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-09 02:48:33,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:33,970 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] [2024-11-09 02:48:33,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 02:48:34,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 02:48:34,174 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:34,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:34,174 INFO L85 PathProgramCache]: Analyzing trace with hash -741052655, now seen corresponding path program 1 times [2024-11-09 02:48:34,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:34,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988651967] [2024-11-09 02:48:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:34,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988651967] [2024-11-09 02:48:35,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988651967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429572630] [2024-11-09 02:48:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:35,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:35,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:35,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:35,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:48:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:35,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 02:48:35,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:35,443 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 [2024-11-09 02:48:35,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:35,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 02:48:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:35,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:37,648 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 64 treesize of output 56 [2024-11-09 02:48:37,680 INFO L349 Elim1Store]: treesize reduction 23, result has 34.3 percent of original size [2024-11-09 02:48:37,680 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 91 [2024-11-09 02:48:37,715 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 64 treesize of output 56 [2024-11-09 02:48:37,726 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2024-11-09 02:48:37,726 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 1 [2024-11-09 02:48:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:37,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429572630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:37,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:37,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-09 02:48:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872943059] [2024-11-09 02:48:37,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:37,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 02:48:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 02:48:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-09 02:48:37,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:37,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 101 transitions, 750 flow. Second operand has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 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) [2024-11-09 02:48:37,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:37,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:37,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:39,338 INFO L124 PetriNetUnfolderBase]: 1831/2662 cut-off events. [2024-11-09 02:48:39,338 INFO L125 PetriNetUnfolderBase]: For 6876/6876 co-relation queries the response was YES. [2024-11-09 02:48:39,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11424 conditions, 2662 events. 1831/2662 cut-off events. For 6876/6876 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11615 event pairs, 197 based on Foata normal form. 1/2663 useless extension candidates. Maximal degree in co-relation 7529. Up to 1051 conditions per place. [2024-11-09 02:48:39,381 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 261 selfloop transitions, 120 changer transitions 1/383 dead transitions. [2024-11-09 02:48:39,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 383 transitions, 3648 flow [2024-11-09 02:48:39,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:48:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:48:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 185 transitions. [2024-11-09 02:48:39,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-11-09 02:48:39,386 INFO L175 Difference]: Start difference. First operand has 67 places, 101 transitions, 750 flow. Second operand 14 states and 185 transitions. [2024-11-09 02:48:39,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 383 transitions, 3648 flow [2024-11-09 02:48:39,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 383 transitions, 3612 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:39,411 INFO L231 Difference]: Finished difference. Result has 82 places, 197 transitions, 1966 flow [2024-11-09 02:48:39,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1966, PETRI_PLACES=82, PETRI_TRANSITIONS=197} [2024-11-09 02:48:39,412 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-11-09 02:48:39,412 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 197 transitions, 1966 flow [2024-11-09 02:48:39,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 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) [2024-11-09 02:48:39,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:39,412 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] [2024-11-09 02:48:39,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 02:48:39,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 02:48:39,617 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:39,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 640483030, now seen corresponding path program 1 times [2024-11-09 02:48:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044387749] [2024-11-09 02:48:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044387749] [2024-11-09 02:48:40,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044387749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319651589] [2024-11-09 02:48:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:40,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:40,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:40,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:40,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:48:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:40,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 02:48:40,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:40,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:40,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 72 treesize of output 32 [2024-11-09 02:48:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:40,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:40,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:40,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 127 [2024-11-09 02:48:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:41,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319651589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:41,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2024-11-09 02:48:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475726279] [2024-11-09 02:48:41,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:41,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:48:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:48:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:48:41,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:41,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 197 transitions, 1966 flow. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-09 02:48:41,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:41,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:41,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:42,090 INFO L124 PetriNetUnfolderBase]: 2303/3319 cut-off events. [2024-11-09 02:48:42,090 INFO L125 PetriNetUnfolderBase]: For 12525/12525 co-relation queries the response was YES. [2024-11-09 02:48:42,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16427 conditions, 3319 events. 2303/3319 cut-off events. For 12525/12525 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14815 event pairs, 314 based on Foata normal form. 2/3321 useless extension candidates. Maximal degree in co-relation 15127. Up to 2610 conditions per place. [2024-11-09 02:48:42,108 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 200 selfloop transitions, 140 changer transitions 1/342 dead transitions. [2024-11-09 02:48:42,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 342 transitions, 3955 flow [2024-11-09 02:48:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:48:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:48:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-11-09 02:48:42,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-11-09 02:48:42,109 INFO L175 Difference]: Start difference. First operand has 82 places, 197 transitions, 1966 flow. Second operand 10 states and 119 transitions. [2024-11-09 02:48:42,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 342 transitions, 3955 flow [2024-11-09 02:48:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 342 transitions, 3730 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:42,144 INFO L231 Difference]: Finished difference. Result has 91 places, 280 transitions, 3096 flow [2024-11-09 02:48:42,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3096, PETRI_PLACES=91, PETRI_TRANSITIONS=280} [2024-11-09 02:48:42,145 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-11-09 02:48:42,145 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 280 transitions, 3096 flow [2024-11-09 02:48:42,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-09 02:48:42,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:42,145 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] [2024-11-09 02:48:42,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 02:48:42,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 02:48:42,350 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:42,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2142795643, now seen corresponding path program 2 times [2024-11-09 02:48:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:42,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270697385] [2024-11-09 02:48:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:42,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:43,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270697385] [2024-11-09 02:48:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270697385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003264256] [2024-11-09 02:48:43,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:43,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:43,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:43,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:43,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:48:43,219 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:43,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:43,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 02:48:43,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:43,245 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 [2024-11-09 02:48:43,262 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 [2024-11-09 02:48:43,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:43,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 02:48:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:43,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003264256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:44,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:44,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 31 [2024-11-09 02:48:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838004321] [2024-11-09 02:48:44,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:44,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 02:48:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:44,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 02:48:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2024-11-09 02:48:44,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:44,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 280 transitions, 3096 flow. Second operand has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 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) [2024-11-09 02:48:44,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:44,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:44,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:45,966 INFO L124 PetriNetUnfolderBase]: 2677/3931 cut-off events. [2024-11-09 02:48:45,966 INFO L125 PetriNetUnfolderBase]: For 18259/18259 co-relation queries the response was YES. [2024-11-09 02:48:45,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21046 conditions, 3931 events. 2677/3931 cut-off events. For 18259/18259 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 18895 event pairs, 314 based on Foata normal form. 2/3933 useless extension candidates. Maximal degree in co-relation 19639. Up to 3129 conditions per place. [2024-11-09 02:48:45,991 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 262 selfloop transitions, 156 changer transitions 4/423 dead transitions. [2024-11-09 02:48:45,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 423 transitions, 5120 flow [2024-11-09 02:48:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:48:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:48:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 196 transitions. [2024-11-09 02:48:45,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3820662768031189 [2024-11-09 02:48:45,993 INFO L175 Difference]: Start difference. First operand has 91 places, 280 transitions, 3096 flow. Second operand 19 states and 196 transitions. [2024-11-09 02:48:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 423 transitions, 5120 flow [2024-11-09 02:48:46,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 423 transitions, 5061 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-09 02:48:46,056 INFO L231 Difference]: Finished difference. Result has 113 places, 348 transitions, 4256 flow [2024-11-09 02:48:46,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4256, PETRI_PLACES=113, PETRI_TRANSITIONS=348} [2024-11-09 02:48:46,056 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-11-09 02:48:46,057 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 348 transitions, 4256 flow [2024-11-09 02:48:46,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 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) [2024-11-09 02:48:46,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:46,058 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] [2024-11-09 02:48:46,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:46,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:48:46,262 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:46,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1007724650, now seen corresponding path program 2 times [2024-11-09 02:48:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023431994] [2024-11-09 02:48:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:46,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:46,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:46,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023431994] [2024-11-09 02:48:46,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023431994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:46,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691972394] [2024-11-09 02:48:46,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:46,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:46,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:46,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:46,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:48:47,057 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:47,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:47,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 02:48:47,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:47,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:47,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 31 [2024-11-09 02:48:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:47,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:47,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:47,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 133 treesize of output 130 [2024-11-09 02:48:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691972394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:47,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:47,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-09 02:48:47,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835126005] [2024-11-09 02:48:47,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:47,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:48:47,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:48:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:48:47,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:47,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 348 transitions, 4256 flow. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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) [2024-11-09 02:48:47,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:47,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:47,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:48,799 INFO L124 PetriNetUnfolderBase]: 3225/4716 cut-off events. [2024-11-09 02:48:48,799 INFO L125 PetriNetUnfolderBase]: For 26089/26089 co-relation queries the response was YES. [2024-11-09 02:48:48,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27148 conditions, 4716 events. 3225/4716 cut-off events. For 26089/26089 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 23294 event pairs, 292 based on Foata normal form. 2/4718 useless extension candidates. Maximal degree in co-relation 26923. Up to 3235 conditions per place. [2024-11-09 02:48:48,831 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 224 selfloop transitions, 282 changer transitions 1/508 dead transitions. [2024-11-09 02:48:48,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 508 transitions, 6910 flow [2024-11-09 02:48:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:48:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:48:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-11-09 02:48:48,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-11-09 02:48:48,834 INFO L175 Difference]: Start difference. First operand has 113 places, 348 transitions, 4256 flow. Second operand 10 states and 128 transitions. [2024-11-09 02:48:48,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 508 transitions, 6910 flow [2024-11-09 02:48:48,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 508 transitions, 6649 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-11-09 02:48:48,944 INFO L231 Difference]: Finished difference. Result has 121 places, 423 transitions, 5840 flow [2024-11-09 02:48:48,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5840, PETRI_PLACES=121, PETRI_TRANSITIONS=423} [2024-11-09 02:48:48,945 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-11-09 02:48:48,945 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 423 transitions, 5840 flow [2024-11-09 02:48:48,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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) [2024-11-09 02:48:48,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:48,946 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] [2024-11-09 02:48:48,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:49,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:49,149 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:49,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash 488918769, now seen corresponding path program 3 times [2024-11-09 02:48:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:49,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990161735] [2024-11-09 02:48:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:49,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:49,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:49,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990161735] [2024-11-09 02:48:49,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990161735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:49,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7776057] [2024-11-09 02:48:49,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:48:49,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:49,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:49,864 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:49,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:48:49,949 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:48:49,949 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:49,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 02:48:49,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:49,972 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 [2024-11-09 02:48:49,991 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 [2024-11-09 02:48:50,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 02:48:50,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:50,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 58 [2024-11-09 02:48:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:50,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:51,343 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 97 treesize of output 89 [2024-11-09 02:48:51,378 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2024-11-09 02:48:51,379 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 905 treesize of output 764 [2024-11-09 02:48:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7776057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:51,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-09 02:48:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118737921] [2024-11-09 02:48:51,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:51,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 02:48:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 02:48:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-09 02:48:51,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:51,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 423 transitions, 5840 flow. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 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) [2024-11-09 02:48:51,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:51,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:51,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:54,440 INFO L124 PetriNetUnfolderBase]: 3702/5398 cut-off events. [2024-11-09 02:48:54,440 INFO L125 PetriNetUnfolderBase]: For 36529/36529 co-relation queries the response was YES. [2024-11-09 02:48:54,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33497 conditions, 5398 events. 3702/5398 cut-off events. For 36529/36529 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 27171 event pairs, 402 based on Foata normal form. 3/5401 useless extension candidates. Maximal degree in co-relation 33284. Up to 2020 conditions per place. [2024-11-09 02:48:54,492 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 454 selfloop transitions, 285 changer transitions 9/749 dead transitions. [2024-11-09 02:48:54,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 749 transitions, 10738 flow [2024-11-09 02:48:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 02:48:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 02:48:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 281 transitions. [2024-11-09 02:48:54,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4730639730639731 [2024-11-09 02:48:54,497 INFO L175 Difference]: Start difference. First operand has 121 places, 423 transitions, 5840 flow. Second operand 22 states and 281 transitions. [2024-11-09 02:48:54,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 749 transitions, 10738 flow [2024-11-09 02:48:54,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 749 transitions, 10399 flow, removed 166 selfloop flow, removed 3 redundant places. [2024-11-09 02:48:54,726 INFO L231 Difference]: Finished difference. Result has 150 places, 508 transitions, 7444 flow [2024-11-09 02:48:54,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5593, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7444, PETRI_PLACES=150, PETRI_TRANSITIONS=508} [2024-11-09 02:48:54,727 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-11-09 02:48:54,727 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 508 transitions, 7444 flow [2024-11-09 02:48:54,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 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) [2024-11-09 02:48:54,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:54,728 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] [2024-11-09 02:48:54,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:54,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 02:48:54,928 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:54,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1485351290, now seen corresponding path program 3 times [2024-11-09 02:48:54,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:54,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118175111] [2024-11-09 02:48:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:54,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:55,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118175111] [2024-11-09 02:48:55,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118175111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:55,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712228269] [2024-11-09 02:48:55,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:48:55,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:55,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:55,612 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:55,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:48:55,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:48:55,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:55,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 02:48:55,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:55,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:55,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 02:48:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:55,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:56,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:56,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 127 [2024-11-09 02:48:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:56,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712228269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:56,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:56,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-09 02:48:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686070499] [2024-11-09 02:48:56,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:56,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:48:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:48:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:48:56,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:56,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 508 transitions, 7444 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:56,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:56,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:56,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:57,804 INFO L124 PetriNetUnfolderBase]: 3884/5664 cut-off events. [2024-11-09 02:48:57,804 INFO L125 PetriNetUnfolderBase]: For 45630/45630 co-relation queries the response was YES. [2024-11-09 02:48:57,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36965 conditions, 5664 events. 3884/5664 cut-off events. For 45630/45630 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 28754 event pairs, 543 based on Foata normal form. 2/5666 useless extension candidates. Maximal degree in co-relation 36686. Up to 4900 conditions per place. [2024-11-09 02:48:57,855 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 404 selfloop transitions, 183 changer transitions 1/589 dead transitions. [2024-11-09 02:48:57,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 589 transitions, 9454 flow [2024-11-09 02:48:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:48:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:48:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-11-09 02:48:57,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-11-09 02:48:57,857 INFO L175 Difference]: Start difference. First operand has 150 places, 508 transitions, 7444 flow. Second operand 10 states and 122 transitions. [2024-11-09 02:48:57,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 589 transitions, 9454 flow [2024-11-09 02:48:58,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 589 transitions, 9092 flow, removed 114 selfloop flow, removed 7 redundant places. [2024-11-09 02:48:58,222 INFO L231 Difference]: Finished difference. Result has 156 places, 524 transitions, 7924 flow [2024-11-09 02:48:58,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7094, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7924, PETRI_PLACES=156, PETRI_TRANSITIONS=524} [2024-11-09 02:48:58,223 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2024-11-09 02:48:58,223 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 524 transitions, 7924 flow [2024-11-09 02:48:58,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:58,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:58,224 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] [2024-11-09 02:48:58,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:58,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 02:48:58,424 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:58,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2111989887, now seen corresponding path program 4 times [2024-11-09 02:48:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:58,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418270669] [2024-11-09 02:48:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:58,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418270669] [2024-11-09 02:48:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418270669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264862826] [2024-11-09 02:48:59,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:48:59,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:59,150 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:59,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:48:59,234 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:48:59,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:59,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 02:48:59,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:59,257 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 19 treesize of output 1 [2024-11-09 02:48:59,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:59,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 72 treesize of output 32 [2024-11-09 02:48:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:59,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:00,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264862826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:00,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:00,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 28 [2024-11-09 02:49:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857643865] [2024-11-09 02:49:00,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:00,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 02:49:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:00,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 02:49:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2024-11-09 02:49:00,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:00,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 524 transitions, 7924 flow. Second operand has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 28 states have internal predecessors, (177), 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) [2024-11-09 02:49:00,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:00,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:00,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:02,200 INFO L124 PetriNetUnfolderBase]: 4214/6164 cut-off events. [2024-11-09 02:49:02,200 INFO L125 PetriNetUnfolderBase]: For 52218/52218 co-relation queries the response was YES. [2024-11-09 02:49:02,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41007 conditions, 6164 events. 4214/6164 cut-off events. For 52218/52218 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 31822 event pairs, 465 based on Foata normal form. 4/6168 useless extension candidates. Maximal degree in co-relation 40736. Up to 4448 conditions per place. [2024-11-09 02:49:02,255 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 298 selfloop transitions, 337 changer transitions 2/638 dead transitions. [2024-11-09 02:49:02,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 638 transitions, 10343 flow [2024-11-09 02:49:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:49:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:49:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 177 transitions. [2024-11-09 02:49:02,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-11-09 02:49:02,257 INFO L175 Difference]: Start difference. First operand has 156 places, 524 transitions, 7924 flow. Second operand 15 states and 177 transitions. [2024-11-09 02:49:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 638 transitions, 10343 flow [2024-11-09 02:49:02,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 638 transitions, 9890 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-11-09 02:49:02,557 INFO L231 Difference]: Finished difference. Result has 169 places, 553 transitions, 8695 flow [2024-11-09 02:49:02,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7493, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8695, PETRI_PLACES=169, PETRI_TRANSITIONS=553} [2024-11-09 02:49:02,557 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-11-09 02:49:02,558 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 553 transitions, 8695 flow [2024-11-09 02:49:02,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 28 states have internal predecessors, (177), 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) [2024-11-09 02:49:02,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:02,558 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] [2024-11-09 02:49:02,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:02,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:02,759 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:02,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:02,760 INFO L85 PathProgramCache]: Analyzing trace with hash -490545825, now seen corresponding path program 5 times [2024-11-09 02:49:02,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:02,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26109192] [2024-11-09 02:49:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:02,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:03,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:03,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26109192] [2024-11-09 02:49:03,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26109192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:03,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208510460] [2024-11-09 02:49:03,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:03,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:03,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:03,841 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:03,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 02:49:03,928 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:03,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:03,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 02:49:03,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:03,954 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 [2024-11-09 02:49:03,970 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 [2024-11-09 02:49:04,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:04,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 02:49:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:04,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:05,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208510460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:05,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:05,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 27 [2024-11-09 02:49:05,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072567163] [2024-11-09 02:49:05,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:05,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 02:49:05,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 02:49:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2024-11-09 02:49:05,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:05,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 553 transitions, 8695 flow. Second operand has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 27 states have internal predecessors, (173), 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) [2024-11-09 02:49:05,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:05,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:05,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:07,582 INFO L124 PetriNetUnfolderBase]: 4334/6338 cut-off events. [2024-11-09 02:49:07,582 INFO L125 PetriNetUnfolderBase]: For 57062/57062 co-relation queries the response was YES. [2024-11-09 02:49:07,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42952 conditions, 6338 events. 4334/6338 cut-off events. For 57062/57062 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 33018 event pairs, 507 based on Foata normal form. 3/6341 useless extension candidates. Maximal degree in co-relation 42648. Up to 4668 conditions per place. [2024-11-09 02:49:07,651 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 327 selfloop transitions, 383 changer transitions 1/712 dead transitions. [2024-11-09 02:49:07,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 712 transitions, 11707 flow [2024-11-09 02:49:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 02:49:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 02:49:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 316 transitions. [2024-11-09 02:49:07,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40357598978288634 [2024-11-09 02:49:07,653 INFO L175 Difference]: Start difference. First operand has 169 places, 553 transitions, 8695 flow. Second operand 29 states and 316 transitions. [2024-11-09 02:49:07,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 712 transitions, 11707 flow [2024-11-09 02:49:08,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 712 transitions, 11215 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-11-09 02:49:08,033 INFO L231 Difference]: Finished difference. Result has 196 places, 589 transitions, 9823 flow [2024-11-09 02:49:08,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8222, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9823, PETRI_PLACES=196, PETRI_TRANSITIONS=589} [2024-11-09 02:49:08,034 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-11-09 02:49:08,035 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 589 transitions, 9823 flow [2024-11-09 02:49:08,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 27 states have internal predecessors, (173), 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) [2024-11-09 02:49:08,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:08,035 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] [2024-11-09 02:49:08,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 02:49:08,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:08,243 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:08,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1084942190, now seen corresponding path program 4 times [2024-11-09 02:49:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952264088] [2024-11-09 02:49:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:08,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:08,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952264088] [2024-11-09 02:49:08,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952264088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:08,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794963322] [2024-11-09 02:49:08,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:08,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:08,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:08,837 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:08,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 02:49:08,928 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:08,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:08,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 02:49:08,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:09,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:09,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 72 treesize of output 32 [2024-11-09 02:49:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:09,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:09,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:09,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 133 treesize of output 130 [2024-11-09 02:49:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:09,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794963322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:09,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:09,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2024-11-09 02:49:09,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482990158] [2024-11-09 02:49:09,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:09,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:49:09,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:49:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:49:09,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:09,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 589 transitions, 9823 flow. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-09 02:49:09,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:09,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:09,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:11,483 INFO L124 PetriNetUnfolderBase]: 4592/6712 cut-off events. [2024-11-09 02:49:11,483 INFO L125 PetriNetUnfolderBase]: For 65184/65184 co-relation queries the response was YES. [2024-11-09 02:49:11,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47123 conditions, 6712 events. 4592/6712 cut-off events. For 65184/65184 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 35453 event pairs, 569 based on Foata normal form. 2/6714 useless extension candidates. Maximal degree in co-relation 46803. Up to 5803 conditions per place. [2024-11-09 02:49:11,543 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 483 selfloop transitions, 161 changer transitions 1/646 dead transitions. [2024-11-09 02:49:11,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 646 transitions, 11678 flow [2024-11-09 02:49:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:49:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:49:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-11-09 02:49:11,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-11-09 02:49:11,546 INFO L175 Difference]: Start difference. First operand has 196 places, 589 transitions, 9823 flow. Second operand 10 states and 118 transitions. [2024-11-09 02:49:11,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 646 transitions, 11678 flow [2024-11-09 02:49:12,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 646 transitions, 11272 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-11-09 02:49:12,112 INFO L231 Difference]: Finished difference. Result has 197 places, 600 transitions, 9990 flow [2024-11-09 02:49:12,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9417, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9990, PETRI_PLACES=197, PETRI_TRANSITIONS=600} [2024-11-09 02:49:12,113 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-11-09 02:49:12,114 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 600 transitions, 9990 flow [2024-11-09 02:49:12,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-09 02:49:12,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:12,114 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] [2024-11-09 02:49:12,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:12,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:12,315 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:12,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash -604024040, now seen corresponding path program 5 times [2024-11-09 02:49:12,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:12,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701495903] [2024-11-09 02:49:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:12,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:12,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701495903] [2024-11-09 02:49:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701495903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648634187] [2024-11-09 02:49:12,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:12,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:12,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:12,815 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:12,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 02:49:12,911 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:12,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:12,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:49:12,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:13,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:13,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 72 treesize of output 32 [2024-11-09 02:49:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:13,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:13,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:13,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 147 treesize of output 132 [2024-11-09 02:49:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648634187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:13,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2024-11-09 02:49:13,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795570423] [2024-11-09 02:49:13,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:13,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:49:13,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:49:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:49:13,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:13,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 600 transitions, 9990 flow. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-09 02:49:13,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:13,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:13,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:15,238 INFO L124 PetriNetUnfolderBase]: 4774/6978 cut-off events. [2024-11-09 02:49:15,238 INFO L125 PetriNetUnfolderBase]: For 72970/72970 co-relation queries the response was YES. [2024-11-09 02:49:15,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49862 conditions, 6978 events. 4774/6978 cut-off events. For 72970/72970 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 37052 event pairs, 768 based on Foata normal form. 2/6980 useless extension candidates. Maximal degree in co-relation 49532. Up to 6315 conditions per place. [2024-11-09 02:49:15,299 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 485 selfloop transitions, 161 changer transitions 1/648 dead transitions. [2024-11-09 02:49:15,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 648 transitions, 11747 flow [2024-11-09 02:49:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:49:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:49:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-11-09 02:49:15,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-09 02:49:15,300 INFO L175 Difference]: Start difference. First operand has 197 places, 600 transitions, 9990 flow. Second operand 10 states and 117 transitions. [2024-11-09 02:49:15,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 648 transitions, 11747 flow [2024-11-09 02:49:15,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 648 transitions, 11345 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-11-09 02:49:15,732 INFO L231 Difference]: Finished difference. Result has 201 places, 606 transitions, 10076 flow [2024-11-09 02:49:15,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9590, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10076, PETRI_PLACES=201, PETRI_TRANSITIONS=606} [2024-11-09 02:49:15,733 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-11-09 02:49:15,733 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 606 transitions, 10076 flow [2024-11-09 02:49:15,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-09 02:49:15,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:15,733 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] [2024-11-09 02:49:15,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:15,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 02:49:15,938 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:15,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:15,938 INFO L85 PathProgramCache]: Analyzing trace with hash 823654653, now seen corresponding path program 6 times [2024-11-09 02:49:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440994782] [2024-11-09 02:49:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:16,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440994782] [2024-11-09 02:49:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440994782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345484723] [2024-11-09 02:49:16,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:49:16,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:16,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:16,604 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:16,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 02:49:16,705 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:49:16,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:16,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 02:49:16,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:16,718 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 [2024-11-09 02:49:16,722 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 [2024-11-09 02:49:16,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:16,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 02:49:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:16,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345484723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:17,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:17,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 24 [2024-11-09 02:49:17,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139301820] [2024-11-09 02:49:17,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:17,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 02:49:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 02:49:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-09 02:49:17,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:17,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 606 transitions, 10076 flow. Second operand has 24 states, 24 states have (on average 6.416666666666667) internal successors, (154), 24 states have internal predecessors, (154), 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) [2024-11-09 02:49:17,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:17,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:17,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:20,273 INFO L124 PetriNetUnfolderBase]: 4848/7106 cut-off events. [2024-11-09 02:49:20,273 INFO L125 PetriNetUnfolderBase]: For 73458/73458 co-relation queries the response was YES. [2024-11-09 02:49:20,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50342 conditions, 7106 events. 4848/7106 cut-off events. For 73458/73458 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37919 event pairs, 551 based on Foata normal form. 2/7108 useless extension candidates. Maximal degree in co-relation 50002. Up to 6079 conditions per place. [2024-11-09 02:49:20,333 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 486 selfloop transitions, 190 changer transitions 2/679 dead transitions. [2024-11-09 02:49:20,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 679 transitions, 12094 flow [2024-11-09 02:49:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:49:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:49:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 166 transitions. [2024-11-09 02:49:20,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40987654320987654 [2024-11-09 02:49:20,335 INFO L175 Difference]: Start difference. First operand has 201 places, 606 transitions, 10076 flow. Second operand 15 states and 166 transitions. [2024-11-09 02:49:20,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 679 transitions, 12094 flow [2024-11-09 02:49:20,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 679 transitions, 11712 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-11-09 02:49:20,763 INFO L231 Difference]: Finished difference. Result has 210 places, 619 transitions, 10325 flow [2024-11-09 02:49:20,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9694, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10325, PETRI_PLACES=210, PETRI_TRANSITIONS=619} [2024-11-09 02:49:20,765 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-11-09 02:49:20,765 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 619 transitions, 10325 flow [2024-11-09 02:49:20,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.416666666666667) internal successors, (154), 24 states have internal predecessors, (154), 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) [2024-11-09 02:49:20,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:20,765 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] [2024-11-09 02:49:20,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 02:49:20,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 02:49:20,966 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:20,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1610963545, now seen corresponding path program 7 times [2024-11-09 02:49:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894383137] [2024-11-09 02:49:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:21,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:21,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894383137] [2024-11-09 02:49:21,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894383137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:21,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120336742] [2024-11-09 02:49:21,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:49:21,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:21,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:21,987 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:21,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 02:49:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:22,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 02:49:22,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:22,098 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 [2024-11-09 02:49:22,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:22,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 02:49:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:22,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120336742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:23,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:23,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 23 [2024-11-09 02:49:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774867561] [2024-11-09 02:49:23,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:23,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:49:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:49:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:49:23,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:23,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 619 transitions, 10325 flow. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 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) [2024-11-09 02:49:23,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:23,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:23,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:25,686 INFO L124 PetriNetUnfolderBase]: 4926/7248 cut-off events. [2024-11-09 02:49:25,686 INFO L125 PetriNetUnfolderBase]: For 74802/74802 co-relation queries the response was YES. [2024-11-09 02:49:25,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51308 conditions, 7248 events. 4926/7248 cut-off events. For 74802/74802 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 39173 event pairs, 586 based on Foata normal form. 2/7250 useless extension candidates. Maximal degree in co-relation 50940. Up to 6355 conditions per place. [2024-11-09 02:49:25,740 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 487 selfloop transitions, 197 changer transitions 1/686 dead transitions. [2024-11-09 02:49:25,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 686 transitions, 12367 flow [2024-11-09 02:49:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:49:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:49:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 158 transitions. [2024-11-09 02:49:25,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39012345679012345 [2024-11-09 02:49:25,742 INFO L175 Difference]: Start difference. First operand has 210 places, 619 transitions, 10325 flow. Second operand 15 states and 158 transitions. [2024-11-09 02:49:25,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 686 transitions, 12367 flow [2024-11-09 02:49:26,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 686 transitions, 12020 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-11-09 02:49:26,169 INFO L231 Difference]: Finished difference. Result has 217 places, 635 transitions, 10729 flow [2024-11-09 02:49:26,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9988, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10729, PETRI_PLACES=217, PETRI_TRANSITIONS=635} [2024-11-09 02:49:26,170 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-11-09 02:49:26,170 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 635 transitions, 10729 flow [2024-11-09 02:49:26,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 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) [2024-11-09 02:49:26,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:26,170 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] [2024-11-09 02:49:26,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 02:49:26,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:26,371 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:26,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash 336076741, now seen corresponding path program 8 times [2024-11-09 02:49:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:26,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197105963] [2024-11-09 02:49:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:27,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197105963] [2024-11-09 02:49:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197105963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072338493] [2024-11-09 02:49:27,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:27,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:27,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:27,143 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:27,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 02:49:27,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:27,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:27,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 02:49:27,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:27,255 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 [2024-11-09 02:49:27,271 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 [2024-11-09 02:49:27,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:27,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 152 [2024-11-09 02:49:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:30,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:31,826 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 97 treesize of output 89 [2024-11-09 02:49:31,855 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2024-11-09 02:49:31,855 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 1375 treesize of output 1150 [2024-11-09 02:49:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:32,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072338493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:32,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:32,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-09 02:49:32,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41568026] [2024-11-09 02:49:32,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:32,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 02:49:32,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:32,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 02:49:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-09 02:49:32,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:32,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 635 transitions, 10729 flow. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 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) [2024-11-09 02:49:32,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:32,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:32,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:35,181 INFO L124 PetriNetUnfolderBase]: 5303/7787 cut-off events. [2024-11-09 02:49:35,181 INFO L125 PetriNetUnfolderBase]: For 86743/86743 co-relation queries the response was YES. [2024-11-09 02:49:35,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56072 conditions, 7787 events. 5303/7787 cut-off events. For 86743/86743 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 42578 event pairs, 811 based on Foata normal form. 2/7789 useless extension candidates. Maximal degree in co-relation 55672. Up to 3865 conditions per place. [2024-11-09 02:49:35,252 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 689 selfloop transitions, 229 changer transitions 6/925 dead transitions. [2024-11-09 02:49:35,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 925 transitions, 16226 flow [2024-11-09 02:49:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:49:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:49:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 254 transitions. [2024-11-09 02:49:35,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479717813051146 [2024-11-09 02:49:35,256 INFO L175 Difference]: Start difference. First operand has 217 places, 635 transitions, 10729 flow. Second operand 21 states and 254 transitions. [2024-11-09 02:49:35,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 925 transitions, 16226 flow [2024-11-09 02:49:35,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 925 transitions, 15856 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-11-09 02:49:35,827 INFO L231 Difference]: Finished difference. Result has 232 places, 717 transitions, 12223 flow [2024-11-09 02:49:35,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10408, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12223, PETRI_PLACES=232, PETRI_TRANSITIONS=717} [2024-11-09 02:49:35,828 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-11-09 02:49:35,828 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 717 transitions, 12223 flow [2024-11-09 02:49:35,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 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) [2024-11-09 02:49:35,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:35,829 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] [2024-11-09 02:49:35,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 02:49:36,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:36,029 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:36,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash -25221393, now seen corresponding path program 9 times [2024-11-09 02:49:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000072361] [2024-11-09 02:49:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:36,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000072361] [2024-11-09 02:49:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000072361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720827452] [2024-11-09 02:49:36,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:49:36,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:36,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:36,608 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:36,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 02:49:36,725 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:49:36,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:36,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 02:49:36,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:36,742 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 [2024-11-09 02:49:36,756 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 [2024-11-09 02:49:36,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 02:49:37,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:37,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 56 [2024-11-09 02:49:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:37,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720827452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:38,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:38,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 27 [2024-11-09 02:49:38,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819391974] [2024-11-09 02:49:38,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:38,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 02:49:38,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:38,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 02:49:38,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2024-11-09 02:49:38,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:38,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 717 transitions, 12223 flow. Second operand has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 27 states have internal predecessors, (173), 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) [2024-11-09 02:49:38,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:38,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:38,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:41,941 INFO L124 PetriNetUnfolderBase]: 5817/8565 cut-off events. [2024-11-09 02:49:41,941 INFO L125 PetriNetUnfolderBase]: For 104317/104317 co-relation queries the response was YES. [2024-11-09 02:49:41,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63831 conditions, 8565 events. 5817/8565 cut-off events. For 104317/104317 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 47663 event pairs, 790 based on Foata normal form. 4/8569 useless extension candidates. Maximal degree in co-relation 63364. Up to 7203 conditions per place. [2024-11-09 02:49:42,013 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 575 selfloop transitions, 417 changer transitions 3/996 dead transitions. [2024-11-09 02:49:42,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 996 transitions, 17717 flow [2024-11-09 02:49:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 02:49:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-09 02:49:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 457 transitions. [2024-11-09 02:49:42,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3846801346801347 [2024-11-09 02:49:42,015 INFO L175 Difference]: Start difference. First operand has 232 places, 717 transitions, 12223 flow. Second operand 44 states and 457 transitions. [2024-11-09 02:49:42,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 996 transitions, 17717 flow [2024-11-09 02:49:42,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 996 transitions, 16803 flow, removed 422 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:42,755 INFO L231 Difference]: Finished difference. Result has 279 places, 857 transitions, 15168 flow [2024-11-09 02:49:42,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11577, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=15168, PETRI_PLACES=279, PETRI_TRANSITIONS=857} [2024-11-09 02:49:42,759 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-11-09 02:49:42,759 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 857 transitions, 15168 flow [2024-11-09 02:49:42,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 27 states have internal predecessors, (173), 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) [2024-11-09 02:49:42,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:42,759 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:42,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 02:49:42,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 02:49:42,960 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:42,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:42,960 INFO L85 PathProgramCache]: Analyzing trace with hash -732416554, now seen corresponding path program 10 times [2024-11-09 02:49:42,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:42,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399452103] [2024-11-09 02:49:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399452103] [2024-11-09 02:49:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399452103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467041099] [2024-11-09 02:49:43,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:43,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:43,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:43,032 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:43,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 02:49:43,121 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:43,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:43,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:49:43,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:43,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467041099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:43,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2024-11-09 02:49:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734821379] [2024-11-09 02:49:43,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:43,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:49:43,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:49:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:49:43,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:43,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 857 transitions, 15168 flow. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 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) [2024-11-09 02:49:43,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:43,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:43,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:45,366 INFO L124 PetriNetUnfolderBase]: 5117/7466 cut-off events. [2024-11-09 02:49:45,366 INFO L125 PetriNetUnfolderBase]: For 103357/103357 co-relation queries the response was YES. [2024-11-09 02:49:45,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58090 conditions, 7466 events. 5117/7466 cut-off events. For 103357/103357 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 40122 event pairs, 1335 based on Foata normal form. 296/7762 useless extension candidates. Maximal degree in co-relation 57764. Up to 5030 conditions per place. [2024-11-09 02:49:45,438 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 800 selfloop transitions, 240 changer transitions 0/1041 dead transitions. [2024-11-09 02:49:45,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1041 transitions, 19460 flow [2024-11-09 02:49:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:49:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:49:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 244 transitions. [2024-11-09 02:49:45,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43033509700176364 [2024-11-09 02:49:45,439 INFO L175 Difference]: Start difference. First operand has 279 places, 857 transitions, 15168 flow. Second operand 21 states and 244 transitions. [2024-11-09 02:49:45,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1041 transitions, 19460 flow [2024-11-09 02:49:46,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1041 transitions, 18333 flow, removed 441 selfloop flow, removed 11 redundant places. [2024-11-09 02:49:46,152 INFO L231 Difference]: Finished difference. Result has 301 places, 892 transitions, 15611 flow [2024-11-09 02:49:46,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13482, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15611, PETRI_PLACES=301, PETRI_TRANSITIONS=892} [2024-11-09 02:49:46,153 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 272 predicate places. [2024-11-09 02:49:46,153 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 892 transitions, 15611 flow [2024-11-09 02:49:46,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 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) [2024-11-09 02:49:46,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:46,154 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:46,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 02:49:46,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 02:49:46,357 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:46,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2112435668, now seen corresponding path program 11 times [2024-11-09 02:49:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881752541] [2024-11-09 02:49:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:46,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881752541] [2024-11-09 02:49:46,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881752541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696988821] [2024-11-09 02:49:46,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:46,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:46,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:46,455 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:46,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 02:49:46,554 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:46,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:46,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:46,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:46,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:46,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696988821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:46,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:46,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 02:49:46,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447949108] [2024-11-09 02:49:46,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:46,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:49:46,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:46,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:49:46,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:49:46,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:46,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 892 transitions, 15611 flow. Second operand has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 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) [2024-11-09 02:49:46,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:46,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:46,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:48,525 INFO L124 PetriNetUnfolderBase]: 4519/6777 cut-off events. [2024-11-09 02:49:48,525 INFO L125 PetriNetUnfolderBase]: For 109264/109264 co-relation queries the response was YES. [2024-11-09 02:49:48,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54601 conditions, 6777 events. 4519/6777 cut-off events. For 109264/109264 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 38080 event pairs, 1122 based on Foata normal form. 412/7189 useless extension candidates. Maximal degree in co-relation 54067. Up to 2428 conditions per place. [2024-11-09 02:49:48,604 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 832 selfloop transitions, 90 changer transitions 8/931 dead transitions. [2024-11-09 02:49:48,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 931 transitions, 17604 flow [2024-11-09 02:49:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:49:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:49:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-11-09 02:49:48,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-11-09 02:49:48,606 INFO L175 Difference]: Start difference. First operand has 301 places, 892 transitions, 15611 flow. Second operand 8 states and 100 transitions. [2024-11-09 02:49:48,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 931 transitions, 17604 flow [2024-11-09 02:49:49,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 931 transitions, 16716 flow, removed 256 selfloop flow, removed 10 redundant places. [2024-11-09 02:49:49,347 INFO L231 Difference]: Finished difference. Result has 299 places, 804 transitions, 13630 flow [2024-11-09 02:49:49,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13426, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13630, PETRI_PLACES=299, PETRI_TRANSITIONS=804} [2024-11-09 02:49:49,348 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2024-11-09 02:49:49,348 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 804 transitions, 13630 flow [2024-11-09 02:49:49,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 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) [2024-11-09 02:49:49,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:49,348 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:49,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 02:49:49,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 02:49:49,549 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:49,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:49,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1613429199, now seen corresponding path program 6 times [2024-11-09 02:49:49,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:49,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518671385] [2024-11-09 02:49:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:49,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:49,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518671385] [2024-11-09 02:49:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518671385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510693857] [2024-11-09 02:49:49,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:49:49,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:49,700 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:49,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 02:49:49,796 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:49:49,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:49,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:49:49,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:49,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510693857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:49,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:49,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-09 02:49:49,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428794472] [2024-11-09 02:49:49,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:49,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:49:49,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:49:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:49:49,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:49,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 804 transitions, 13630 flow. Second operand has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 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) [2024-11-09 02:49:49,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:49,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:49,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:51,586 INFO L124 PetriNetUnfolderBase]: 4186/6354 cut-off events. [2024-11-09 02:49:51,587 INFO L125 PetriNetUnfolderBase]: For 92314/92314 co-relation queries the response was YES. [2024-11-09 02:49:51,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50650 conditions, 6354 events. 4186/6354 cut-off events. For 92314/92314 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 36073 event pairs, 1139 based on Foata normal form. 164/6518 useless extension candidates. Maximal degree in co-relation 50130. Up to 2428 conditions per place. [2024-11-09 02:49:51,665 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 686 selfloop transitions, 153 changer transitions 82/922 dead transitions. [2024-11-09 02:49:51,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 922 transitions, 16843 flow [2024-11-09 02:49:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:49:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:49:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-11-09 02:49:51,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-09 02:49:51,666 INFO L175 Difference]: Start difference. First operand has 299 places, 804 transitions, 13630 flow. Second operand 8 states and 99 transitions. [2024-11-09 02:49:51,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 922 transitions, 16843 flow [2024-11-09 02:49:52,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 922 transitions, 16443 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-11-09 02:49:52,402 INFO L231 Difference]: Finished difference. Result has 297 places, 735 transitions, 12487 flow [2024-11-09 02:49:52,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13284, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12487, PETRI_PLACES=297, PETRI_TRANSITIONS=735} [2024-11-09 02:49:52,403 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 268 predicate places. [2024-11-09 02:49:52,403 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 735 transitions, 12487 flow [2024-11-09 02:49:52,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 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) [2024-11-09 02:49:52,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:52,404 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] [2024-11-09 02:49:52,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 02:49:52,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 02:49:52,604 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:52,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash -369151846, now seen corresponding path program 1 times [2024-11-09 02:49:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386535440] [2024-11-09 02:49:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:52,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:52,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386535440] [2024-11-09 02:49:52,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386535440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:52,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466941366] [2024-11-09 02:49:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:52,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:52,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:52,682 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:52,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 02:49:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:52,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:49:52,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:52,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466941366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:52,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:52,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-09 02:49:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449864745] [2024-11-09 02:49:52,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:52,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:52,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:52,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:52,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 735 transitions, 12487 flow. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 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) [2024-11-09 02:49:52,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:52,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:52,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:54,264 INFO L124 PetriNetUnfolderBase]: 4089/6259 cut-off events. [2024-11-09 02:49:54,265 INFO L125 PetriNetUnfolderBase]: For 87762/87762 co-relation queries the response was YES. [2024-11-09 02:49:54,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48971 conditions, 6259 events. 4089/6259 cut-off events. For 87762/87762 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 36099 event pairs, 1006 based on Foata normal form. 82/6341 useless extension candidates. Maximal degree in co-relation 48463. Up to 2428 conditions per place. [2024-11-09 02:49:54,332 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 689 selfloop transitions, 144 changer transitions 52/886 dead transitions. [2024-11-09 02:49:54,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 886 transitions, 15935 flow [2024-11-09 02:49:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:49:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:49:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-11-09 02:49:54,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.468013468013468 [2024-11-09 02:49:54,333 INFO L175 Difference]: Start difference. First operand has 297 places, 735 transitions, 12487 flow. Second operand 11 states and 139 transitions. [2024-11-09 02:49:54,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 886 transitions, 15935 flow [2024-11-09 02:49:54,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 886 transitions, 15802 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-09 02:49:54,988 INFO L231 Difference]: Finished difference. Result has 304 places, 725 transitions, 12588 flow [2024-11-09 02:49:54,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12356, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12588, PETRI_PLACES=304, PETRI_TRANSITIONS=725} [2024-11-09 02:49:54,989 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 275 predicate places. [2024-11-09 02:49:54,989 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 725 transitions, 12588 flow [2024-11-09 02:49:54,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 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) [2024-11-09 02:49:54,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:54,990 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] [2024-11-09 02:49:55,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 02:49:55,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:55,194 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:55,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1112460898, now seen corresponding path program 2 times [2024-11-09 02:49:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:55,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929976852] [2024-11-09 02:49:55,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:55,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:55,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:55,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929976852] [2024-11-09 02:49:55,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929976852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:55,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097669054] [2024-11-09 02:49:55,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:55,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:55,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:55,275 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:55,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 02:49:55,385 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:55,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:55,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:49:55,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:55,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097669054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:55,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:55,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 02:49:55,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267904945] [2024-11-09 02:49:55,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:55,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:49:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:55,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:49:55,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:49:55,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:55,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 725 transitions, 12588 flow. Second operand has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 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) [2024-11-09 02:49:55,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:55,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:55,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand