./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-trans.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 f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:44:09,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:44:09,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:44:09,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:44:09,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:44:09,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:44:09,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:44:09,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:44:09,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:44:09,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:44:09,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:44:09,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:44:09,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:44:09,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:44:09,423 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:44:09,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:44:09,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:44:09,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:44:09,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:44:09,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:44:09,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:44:09,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:44:09,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:44:09,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:44:09,428 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:44:09,428 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:44:09,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:44:09,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:44:09,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:44:09,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:44:09,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:44:09,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:44:09,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:44:09,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:44:09,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:44:09,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:44:09,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:44:09,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:44:09,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:44:09,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:44:09,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:44:09,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:44:09,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 [2024-11-22 13:44:09,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:44:09,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:44:09,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:44:09,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:44:09,636 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:44:09,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2024-11-22 13:44:10,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:44:11,065 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:44:11,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2024-11-22 13:44:11,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a581ed0e9/5ae44f8624d74e35b7b884b13366e7dc/FLAGa8ba60fc2 [2024-11-22 13:44:11,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a581ed0e9/5ae44f8624d74e35b7b884b13366e7dc [2024-11-22 13:44:11,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:44:11,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:44:11,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:44:11,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:44:11,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:44:11,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d5c673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11, skipping insertion in model container [2024-11-22 13:44:11,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:44:11,777 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/chl-chromosome-trans.wvr.c[3073,3086] [2024-11-22 13:44:11,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:44:11,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:44:11,824 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/chl-chromosome-trans.wvr.c[3073,3086] [2024-11-22 13:44:11,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:44:11,854 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:44:11,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11 WrapperNode [2024-11-22 13:44:11,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:44:11,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:44:11,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:44:11,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:44:11,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,893 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 267 [2024-11-22 13:44:11,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:44:11,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:44:11,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:44:11,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:44:11,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,917 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 13:44:11,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:44:11,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:44:11,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:44:11,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:44:11,937 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (1/1) ... [2024-11-22 13:44:11,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:44:11,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:11,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:44:11,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:44:12,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:44:12,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:44:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:44:12,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:44:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:44:12,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:44:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:44:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:44:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:44:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:44:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:44:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:44:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:44:12,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:44:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:44:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:44:12,012 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:44:12,115 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:44:12,117 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:44:12,454 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:44:12,454 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:44:12,806 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:44:12,810 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:44:12,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:12 BoogieIcfgContainer [2024-11-22 13:44:12,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:44:12,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:44:12,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:44:12,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:44:12,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:44:11" (1/3) ... [2024-11-22 13:44:12,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75812503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:12, skipping insertion in model container [2024-11-22 13:44:12,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:11" (2/3) ... [2024-11-22 13:44:12,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75812503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:12, skipping insertion in model container [2024-11-22 13:44:12,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:12" (3/3) ... [2024-11-22 13:44:12,823 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2024-11-22 13:44:12,840 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:44:12,841 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:44:12,841 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:44:12,893 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:44:12,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-11-22 13:44:12,956 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-22 13:44:12,957 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:44:12,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-11-22 13:44:12,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-11-22 13:44:12,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-11-22 13:44:12,972 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:44:12,976 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;@221f1fe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:44:12,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:44:12,988 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:44:12,988 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-22 13:44:12,988 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:44:12,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:12,989 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] [2024-11-22 13:44:12,990 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)] === [2024-11-22 13:44:12,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1325247194, now seen corresponding path program 1 times [2024-11-22 13:44:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:13,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100527987] [2024-11-22 13:44:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:44:13,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:44:13,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100527987] [2024-11-22 13:44:13,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100527987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:13,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:13,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:44:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291851102] [2024-11-22 13:44:13,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:13,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:44:13,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:44:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:44:13,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:13,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:13,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:13,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:13,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:13,497 INFO L124 PetriNetUnfolderBase]: 202/302 cut-off events. [2024-11-22 13:44:13,497 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-22 13:44:13,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 302 events. 202/302 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 694 event pairs, 124 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 534. Up to 299 conditions per place. [2024-11-22 13:44:13,505 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-11-22 13:44:13,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 136 flow [2024-11-22 13:44:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:44:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:44:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-22 13:44:13,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-11-22 13:44:13,521 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 44 transitions. [2024-11-22 13:44:13,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 136 flow [2024-11-22 13:44:13,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:44:13,526 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 92 flow [2024-11-22 13:44:13,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-11-22 13:44:13,531 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-22 13:44:13,532 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 92 flow [2024-11-22 13:44:13,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:13,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:13,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:13,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:44:13,533 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)] === [2024-11-22 13:44:13,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1674808808, now seen corresponding path program 1 times [2024-11-22 13:44:13,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:13,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640184936] [2024-11-22 13:44:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:44:13,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:44:13,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:13,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640184936] [2024-11-22 13:44:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640184936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:44:13,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322794900] [2024-11-22 13:44:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:13,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:44:13,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:44:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:44:13,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:13,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:13,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:13,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:13,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:13,918 INFO L124 PetriNetUnfolderBase]: 306/451 cut-off events. [2024-11-22 13:44:13,919 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-22 13:44:13,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 451 events. 306/451 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1207 event pairs, 124 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 900. Up to 302 conditions per place. [2024-11-22 13:44:13,922 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 37 selfloop transitions, 2 changer transitions 2/42 dead transitions. [2024-11-22 13:44:13,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 201 flow [2024-11-22 13:44:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:44:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:44:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-22 13:44:13,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-22 13:44:13,925 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 92 flow. Second operand 3 states and 51 transitions. [2024-11-22 13:44:13,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 201 flow [2024-11-22 13:44:13,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:13,927 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 98 flow [2024-11-22 13:44:13,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2024-11-22 13:44:13,928 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2024-11-22 13:44:13,928 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 98 flow [2024-11-22 13:44:13,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:13,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:13,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:13,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:44:13,929 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)] === [2024-11-22 13:44:13,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash 278082362, now seen corresponding path program 1 times [2024-11-22 13:44:13,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:13,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842780764] [2024-11-22 13:44:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:44:13,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:44:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:14,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842780764] [2024-11-22 13:44:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842780764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:14,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026079313] [2024-11-22 13:44:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:44:14,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:14,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:14,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:44:14,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:44:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:14,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 13:44:14,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:44:14,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:44:14,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026079313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:14,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:14,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-22 13:44:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687112719] [2024-11-22 13:44:14,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:14,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:44:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:44:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:44:14,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:14,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:14,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:14,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:14,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:14,398 INFO L124 PetriNetUnfolderBase]: 306/460 cut-off events. [2024-11-22 13:44:14,398 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-22 13:44:14,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 460 events. 306/460 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1191 event pairs, 202 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 983. Up to 448 conditions per place. [2024-11-22 13:44:14,401 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2024-11-22 13:44:14,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 212 flow [2024-11-22 13:44:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:44:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:44:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-11-22 13:44:14,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-11-22 13:44:14,403 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 98 flow. Second operand 6 states and 71 transitions. [2024-11-22 13:44:14,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 212 flow [2024-11-22 13:44:14,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:14,405 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 192 flow [2024-11-22 13:44:14,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-11-22 13:44:14,406 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-22 13:44:14,406 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 192 flow [2024-11-22 13:44:14,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:14,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:14,407 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:14,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:44:14,610 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 [2024-11-22 13:44:14,611 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)] === [2024-11-22 13:44:14,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2130876906, now seen corresponding path program 2 times [2024-11-22 13:44:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:14,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231309850] [2024-11-22 13:44:14,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:14,645 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:44:14,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-22 13:44:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231309850] [2024-11-22 13:44:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231309850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:14,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:14,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:44:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505289752] [2024-11-22 13:44:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:14,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:44:14,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:44:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:44:14,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:14,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:14,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:14,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:14,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:14,905 INFO L124 PetriNetUnfolderBase]: 502/756 cut-off events. [2024-11-22 13:44:14,905 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-22 13:44:14,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 756 events. 502/756 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2523 event pairs, 202 based on Foata normal form. 17/625 useless extension candidates. Maximal degree in co-relation 1615. Up to 460 conditions per place. [2024-11-22 13:44:14,910 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 63 selfloop transitions, 3 changer transitions 2/69 dead transitions. [2024-11-22 13:44:14,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 407 flow [2024-11-22 13:44:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:44:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:44:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-11-22 13:44:14,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-11-22 13:44:14,912 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 192 flow. Second operand 4 states and 70 transitions. [2024-11-22 13:44:14,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 407 flow [2024-11-22 13:44:14,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 383 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:14,916 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 188 flow [2024-11-22 13:44:14,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-22 13:44:14,917 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-11-22 13:44:14,918 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 188 flow [2024-11-22 13:44:14,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:14,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:14,918 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:14,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:44:14,919 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)] === [2024-11-22 13:44:14,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash 714235528, now seen corresponding path program 3 times [2024-11-22 13:44:14,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070193222] [2024-11-22 13:44:14,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:14,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:44:14,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-22 13:44:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070193222] [2024-11-22 13:44:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070193222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:15,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:15,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:44:15,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401006667] [2024-11-22 13:44:15,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:15,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:44:15,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:44:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:44:15,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:15,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:15,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:15,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:15,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:15,258 INFO L124 PetriNetUnfolderBase]: 560/838 cut-off events. [2024-11-22 13:44:15,258 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2024-11-22 13:44:15,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 838 events. 560/838 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2942 event pairs, 97 based on Foata normal form. 24/740 useless extension candidates. Maximal degree in co-relation 2160. Up to 567 conditions per place. [2024-11-22 13:44:15,264 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 58 selfloop transitions, 5 changer transitions 1/65 dead transitions. [2024-11-22 13:44:15,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 394 flow [2024-11-22 13:44:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:44:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:44:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-22 13:44:15,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 13:44:15,267 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 188 flow. Second operand 4 states and 62 transitions. [2024-11-22 13:44:15,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 394 flow [2024-11-22 13:44:15,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 65 transitions, 383 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:15,270 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 213 flow [2024-11-22 13:44:15,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-22 13:44:15,270 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-11-22 13:44:15,270 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 213 flow [2024-11-22 13:44:15,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:15,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:15,271 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:15,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:44:15,271 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)] === [2024-11-22 13:44:15,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1415160308, now seen corresponding path program 4 times [2024-11-22 13:44:15,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:15,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207434953] [2024-11-22 13:44:15,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:15,294 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:15,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 13:44:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207434953] [2024-11-22 13:44:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207434953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:15,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807966384] [2024-11-22 13:44:15,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:15,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:15,389 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) [2024-11-22 13:44:15,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:44:15,501 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:15,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:15,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:44:15,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 13:44:15,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 13:44:15,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807966384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:15,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-22 13:44:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583509249] [2024-11-22 13:44:15,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:15,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:44:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:44:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:44:15,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:15,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 213 flow. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:15,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:15,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:15,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:15,724 INFO L124 PetriNetUnfolderBase]: 560/841 cut-off events. [2024-11-22 13:44:15,724 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-11-22 13:44:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 841 events. 560/841 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2689 event pairs, 371 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 2277. Up to 825 conditions per place. [2024-11-22 13:44:15,728 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 28 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-11-22 13:44:15,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 323 flow [2024-11-22 13:44:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-22 13:44:15,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-11-22 13:44:15,729 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 213 flow. Second operand 7 states and 72 transitions. [2024-11-22 13:44:15,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 323 flow [2024-11-22 13:44:15,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:15,732 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 278 flow [2024-11-22 13:44:15,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-11-22 13:44:15,733 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-11-22 13:44:15,733 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 278 flow [2024-11-22 13:44:15,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:15,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:15,733 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:15,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:44:15,937 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,SelfDestructingSolverStorable5 [2024-11-22 13:44:15,939 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)] === [2024-11-22 13:44:15,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1179135000, now seen corresponding path program 5 times [2024-11-22 13:44:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:15,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372430179] [2024-11-22 13:44:15,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:15,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:15,994 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:44:15,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:16,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:16,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372430179] [2024-11-22 13:44:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372430179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:16,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:16,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:44:16,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803259756] [2024-11-22 13:44:16,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:16,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:44:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:44:16,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:44:16,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:16,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:16,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:16,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:16,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:16,504 INFO L124 PetriNetUnfolderBase]: 986/1483 cut-off events. [2024-11-22 13:44:16,504 INFO L125 PetriNetUnfolderBase]: For 1272/1272 co-relation queries the response was YES. [2024-11-22 13:44:16,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 1483 events. 986/1483 cut-off events. For 1272/1272 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6009 event pairs, 359 based on Foata normal form. 16/1269 useless extension candidates. Maximal degree in co-relation 3976. Up to 869 conditions per place. [2024-11-22 13:44:16,511 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 73 selfloop transitions, 3 changer transitions 14/91 dead transitions. [2024-11-22 13:44:16,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 91 transitions, 635 flow [2024-11-22 13:44:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:44:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:44:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-22 13:44:16,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-22 13:44:16,512 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 278 flow. Second operand 5 states and 80 transitions. [2024-11-22 13:44:16,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 91 transitions, 635 flow [2024-11-22 13:44:16,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 91 transitions, 599 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-22 13:44:16,515 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 264 flow [2024-11-22 13:44:16,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-22 13:44:16,515 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-11-22 13:44:16,516 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 264 flow [2024-11-22 13:44:16,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:16,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:16,516 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:16,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:44:16,516 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)] === [2024-11-22 13:44:16,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1110501484, now seen corresponding path program 6 times [2024-11-22 13:44:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:16,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240493396] [2024-11-22 13:44:16,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:44:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:16,537 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:44:16,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 13:44:16,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:16,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240493396] [2024-11-22 13:44:16,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240493396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:16,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:16,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:44:16,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088415437] [2024-11-22 13:44:16,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:16,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:44:16,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:16,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:44:16,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:44:16,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:16,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:16,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:16,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:16,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:16,848 INFO L124 PetriNetUnfolderBase]: 780/1157 cut-off events. [2024-11-22 13:44:16,849 INFO L125 PetriNetUnfolderBase]: For 1708/1708 co-relation queries the response was YES. [2024-11-22 13:44:16,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3726 conditions, 1157 events. 780/1157 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4267 event pairs, 306 based on Foata normal form. 48/1078 useless extension candidates. Maximal degree in co-relation 3625. Up to 792 conditions per place. [2024-11-22 13:44:16,853 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 67 selfloop transitions, 6 changer transitions 2/76 dead transitions. [2024-11-22 13:44:16,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 523 flow [2024-11-22 13:44:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:44:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:44:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-22 13:44:16,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-11-22 13:44:16,854 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 264 flow. Second operand 4 states and 66 transitions. [2024-11-22 13:44:16,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 523 flow [2024-11-22 13:44:16,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 506 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-22 13:44:16,857 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 281 flow [2024-11-22 13:44:16,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-11-22 13:44:16,857 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-11-22 13:44:16,857 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 281 flow [2024-11-22 13:44:16,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:16,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:16,858 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:16,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:44:16,858 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)] === [2024-11-22 13:44:16,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1244535245, now seen corresponding path program 1 times [2024-11-22 13:44:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:16,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626846471] [2024-11-22 13:44:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:44:16,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626846471] [2024-11-22 13:44:17,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626846471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:17,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:44:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978108497] [2024-11-22 13:44:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:17,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:44:17,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:44:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:44:17,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:17,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 281 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:17,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:17,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:17,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:17,399 INFO L124 PetriNetUnfolderBase]: 952/1406 cut-off events. [2024-11-22 13:44:17,400 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2024-11-22 13:44:17,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 1406 events. 952/1406 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5436 event pairs, 267 based on Foata normal form. 24/1287 useless extension candidates. Maximal degree in co-relation 4480. Up to 728 conditions per place. [2024-11-22 13:44:17,410 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 82 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-11-22 13:44:17,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 89 transitions, 635 flow [2024-11-22 13:44:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:44:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:44:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-22 13:44:17,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-22 13:44:17,436 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 281 flow. Second operand 5 states and 80 transitions. [2024-11-22 13:44:17,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 89 transitions, 635 flow [2024-11-22 13:44:17,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 595 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 13:44:17,439 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 307 flow [2024-11-22 13:44:17,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-22 13:44:17,440 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-11-22 13:44:17,440 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 307 flow [2024-11-22 13:44:17,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:17,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:17,441 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:17,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:44:17,441 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:44:17,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1741191669, now seen corresponding path program 2 times [2024-11-22 13:44:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702287300] [2024-11-22 13:44:17,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:17,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:17,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 13:44:17,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:17,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702287300] [2024-11-22 13:44:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702287300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:17,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412601113] [2024-11-22 13:44:17,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:17,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:17,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:17,698 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) [2024-11-22 13:44:17,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:44:17,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:17,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:17,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:44:17,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 13:44:17,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 13:44:17,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412601113] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:17,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:44:17,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2024-11-22 13:44:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918950058] [2024-11-22 13:44:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:17,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:44:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:44:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:44:17,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:17,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:17,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:17,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:17,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:18,192 INFO L124 PetriNetUnfolderBase]: 1006/1482 cut-off events. [2024-11-22 13:44:18,193 INFO L125 PetriNetUnfolderBase]: For 2838/2838 co-relation queries the response was YES. [2024-11-22 13:44:18,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 1482 events. 1006/1482 cut-off events. For 2838/2838 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5673 event pairs, 158 based on Foata normal form. 22/1357 useless extension candidates. Maximal degree in co-relation 5003. Up to 615 conditions per place. [2024-11-22 13:44:18,200 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 86 selfloop transitions, 8 changer transitions 4/99 dead transitions. [2024-11-22 13:44:18,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 99 transitions, 747 flow [2024-11-22 13:44:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:44:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:44:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-22 13:44:18,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2024-11-22 13:44:18,202 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 307 flow. Second operand 5 states and 76 transitions. [2024-11-22 13:44:18,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 99 transitions, 747 flow [2024-11-22 13:44:18,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:18,205 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 361 flow [2024-11-22 13:44:18,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-22 13:44:18,205 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-11-22 13:44:18,206 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 361 flow [2024-11-22 13:44:18,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:18,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:18,206 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:18,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 13:44:18,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:18,406 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)] === [2024-11-22 13:44:18,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash -449378853, now seen corresponding path program 3 times [2024-11-22 13:44:18,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:18,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339987983] [2024-11-22 13:44:18,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:18,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:18,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:44:18,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 13:44:18,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:18,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339987983] [2024-11-22 13:44:18,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339987983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:18,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:44:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034466207] [2024-11-22 13:44:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:18,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:44:18,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:44:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:44:18,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:18,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:18,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:18,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:18,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:18,861 INFO L124 PetriNetUnfolderBase]: 962/1411 cut-off events. [2024-11-22 13:44:18,861 INFO L125 PetriNetUnfolderBase]: For 3390/3390 co-relation queries the response was YES. [2024-11-22 13:44:18,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 1411 events. 962/1411 cut-off events. For 3390/3390 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5331 event pairs, 285 based on Foata normal form. 22/1290 useless extension candidates. Maximal degree in co-relation 4966. Up to 750 conditions per place. [2024-11-22 13:44:18,868 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 77 selfloop transitions, 10 changer transitions 4/92 dead transitions. [2024-11-22 13:44:18,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 697 flow [2024-11-22 13:44:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:44:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:44:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-22 13:44:18,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2024-11-22 13:44:18,869 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 361 flow. Second operand 5 states and 81 transitions. [2024-11-22 13:44:18,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 697 flow [2024-11-22 13:44:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 682 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-22 13:44:18,873 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 379 flow [2024-11-22 13:44:18,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-11-22 13:44:18,874 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-11-22 13:44:18,874 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 379 flow [2024-11-22 13:44:18,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:18,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:18,874 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:18,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:44:18,874 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)] === [2024-11-22 13:44:18,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:18,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1644126713, now seen corresponding path program 4 times [2024-11-22 13:44:18,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:18,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400690143] [2024-11-22 13:44:18,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:18,897 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:18,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 13:44:19,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400690143] [2024-11-22 13:44:19,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400690143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:19,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:19,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:44:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954985874] [2024-11-22 13:44:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:19,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:44:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:44:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:44:19,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:19,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:19,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:19,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:19,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:19,310 INFO L124 PetriNetUnfolderBase]: 894/1318 cut-off events. [2024-11-22 13:44:19,310 INFO L125 PetriNetUnfolderBase]: For 3685/3685 co-relation queries the response was YES. [2024-11-22 13:44:19,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4880 conditions, 1318 events. 894/1318 cut-off events. For 3685/3685 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4830 event pairs, 240 based on Foata normal form. 24/1203 useless extension candidates. Maximal degree in co-relation 4773. Up to 753 conditions per place. [2024-11-22 13:44:19,317 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 90 selfloop transitions, 10 changer transitions 15/116 dead transitions. [2024-11-22 13:44:19,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 116 transitions, 895 flow [2024-11-22 13:44:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:44:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:44:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-11-22 13:44:19,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47465437788018433 [2024-11-22 13:44:19,318 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 379 flow. Second operand 7 states and 103 transitions. [2024-11-22 13:44:19,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 116 transitions, 895 flow [2024-11-22 13:44:19,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 116 transitions, 861 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-22 13:44:19,323 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 436 flow [2024-11-22 13:44:19,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-11-22 13:44:19,323 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-11-22 13:44:19,323 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 436 flow [2024-11-22 13:44:19,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:19,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:19,324 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:19,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:44:19,324 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)] === [2024-11-22 13:44:19,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1594761001, now seen corresponding path program 5 times [2024-11-22 13:44:19,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:19,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389333200] [2024-11-22 13:44:19,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:19,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:19,356 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:44:19,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-22 13:44:19,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:19,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389333200] [2024-11-22 13:44:19,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389333200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:44:19,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:44:19,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:44:19,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414447515] [2024-11-22 13:44:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:44:19,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:44:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:44:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:44:19,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:19,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:19,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:19,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:19,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:19,745 INFO L124 PetriNetUnfolderBase]: 824/1196 cut-off events. [2024-11-22 13:44:19,745 INFO L125 PetriNetUnfolderBase]: For 3269/3269 co-relation queries the response was YES. [2024-11-22 13:44:19,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4438 conditions, 1196 events. 824/1196 cut-off events. For 3269/3269 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4144 event pairs, 83 based on Foata normal form. 22/1087 useless extension candidates. Maximal degree in co-relation 4330. Up to 707 conditions per place. [2024-11-22 13:44:19,751 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 77 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-11-22 13:44:19,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 745 flow [2024-11-22 13:44:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:44:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:44:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-22 13:44:19,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-11-22 13:44:19,752 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 436 flow. Second operand 5 states and 72 transitions. [2024-11-22 13:44:19,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 745 flow [2024-11-22 13:44:19,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 706 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-22 13:44:19,757 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 438 flow [2024-11-22 13:44:19,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-11-22 13:44:19,757 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-11-22 13:44:19,758 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 438 flow [2024-11-22 13:44:19,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-11-22 13:44:19,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:19,758 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:19,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:44:19,758 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)] === [2024-11-22 13:44:19,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 201898713, now seen corresponding path program 1 times [2024-11-22 13:44:19,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:19,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589823696] [2024-11-22 13:44:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:44:19,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:20,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:20,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589823696] [2024-11-22 13:44:20,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589823696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:20,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923680102] [2024-11-22 13:44:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:44:20,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:20,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:20,785 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) [2024-11-22 13:44:20,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:44:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:44:20,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 13:44:20,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:21,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:21,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-11-22 13:44:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:21,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:21,678 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:44:21,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:44:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:21,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923680102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:21,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:21,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 30 [2024-11-22 13:44:21,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475814482] [2024-11-22 13:44:21,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:21,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 13:44:21,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 13:44:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2024-11-22 13:44:21,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:21,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 438 flow. Second operand has 30 states, 30 states have (on average 6.266666666666667) internal successors, (188), 30 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:21,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:21,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:21,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:23,280 INFO L124 PetriNetUnfolderBase]: 1968/2865 cut-off events. [2024-11-22 13:44:23,281 INFO L125 PetriNetUnfolderBase]: For 6452/6452 co-relation queries the response was YES. [2024-11-22 13:44:23,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10285 conditions, 2865 events. 1968/2865 cut-off events. For 6452/6452 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12754 event pairs, 145 based on Foata normal form. 1/2445 useless extension candidates. Maximal degree in co-relation 10177. Up to 929 conditions per place. [2024-11-22 13:44:23,295 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 154 selfloop transitions, 82 changer transitions 14/251 dead transitions. [2024-11-22 13:44:23,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 251 transitions, 1950 flow [2024-11-22 13:44:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:44:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 13:44:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 252 transitions. [2024-11-22 13:44:23,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-11-22 13:44:23,296 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 438 flow. Second operand 20 states and 252 transitions. [2024-11-22 13:44:23,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 251 transitions, 1950 flow [2024-11-22 13:44:23,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 251 transitions, 1939 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:44:23,304 INFO L231 Difference]: Finished difference. Result has 91 places, 144 transitions, 1341 flow [2024-11-22 13:44:23,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1341, PETRI_PLACES=91, PETRI_TRANSITIONS=144} [2024-11-22 13:44:23,305 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-11-22 13:44:23,305 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 144 transitions, 1341 flow [2024-11-22 13:44:23,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.266666666666667) internal successors, (188), 30 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:23,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:23,305 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:23,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:44:23,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:23,506 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)] === [2024-11-22 13:44:23,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1029541545, now seen corresponding path program 2 times [2024-11-22 13:44:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131773963] [2024-11-22 13:44:23,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:23,578 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:23,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131773963] [2024-11-22 13:44:24,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131773963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673738191] [2024-11-22 13:44:24,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:44:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:24,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:24,341 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) [2024-11-22 13:44:24,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:44:24,468 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:44:24,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:24,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 13:44:24,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:24,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:24,722 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 59 treesize of output 75 [2024-11-22 13:44:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:24,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:25,073 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:44:25,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:44:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673738191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:25,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:25,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 25 [2024-11-22 13:44:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451734790] [2024-11-22 13:44:25,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:25,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 13:44:25,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 13:44:25,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-22 13:44:25,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:25,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 144 transitions, 1341 flow. Second operand has 25 states, 25 states have (on average 6.36) internal successors, (159), 25 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:25,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:25,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:25,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:26,744 INFO L124 PetriNetUnfolderBase]: 2252/3275 cut-off events. [2024-11-22 13:44:26,745 INFO L125 PetriNetUnfolderBase]: For 12511/12511 co-relation queries the response was YES. [2024-11-22 13:44:26,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14730 conditions, 3275 events. 2252/3275 cut-off events. For 12511/12511 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 15073 event pairs, 157 based on Foata normal form. 1/3238 useless extension candidates. Maximal degree in co-relation 14613. Up to 969 conditions per place. [2024-11-22 13:44:26,762 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 188 selfloop transitions, 143 changer transitions 63/395 dead transitions. [2024-11-22 13:44:26,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 395 transitions, 3804 flow [2024-11-22 13:44:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 13:44:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-22 13:44:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 357 transitions. [2024-11-22 13:44:26,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37148803329864727 [2024-11-22 13:44:26,763 INFO L175 Difference]: Start difference. First operand has 91 places, 144 transitions, 1341 flow. Second operand 31 states and 357 transitions. [2024-11-22 13:44:26,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 395 transitions, 3804 flow [2024-11-22 13:44:26,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 395 transitions, 3715 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-11-22 13:44:26,793 INFO L231 Difference]: Finished difference. Result has 134 places, 216 transitions, 2415 flow [2024-11-22 13:44:26,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2415, PETRI_PLACES=134, PETRI_TRANSITIONS=216} [2024-11-22 13:44:26,794 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-11-22 13:44:26,794 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 216 transitions, 2415 flow [2024-11-22 13:44:26,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 25 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:26,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:26,794 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:26,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:44:26,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 13:44:26,998 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)] === [2024-11-22 13:44:26,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -346624625, now seen corresponding path program 3 times [2024-11-22 13:44:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:26,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416593393] [2024-11-22 13:44:26,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:27,078 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:44:27,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:27,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:27,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416593393] [2024-11-22 13:44:27,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416593393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:27,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293055421] [2024-11-22 13:44:27,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:44:27,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:27,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:27,861 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) [2024-11-22 13:44:27,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:44:28,022 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:44:28,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:28,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 13:44:28,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:28,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:28,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-11-22 13:44:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:28,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:28,788 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:44:28,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:44:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293055421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:28,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:28,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 30 [2024-11-22 13:44:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301327792] [2024-11-22 13:44:28,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:28,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 13:44:28,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 13:44:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2024-11-22 13:44:28,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:28,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 216 transitions, 2415 flow. Second operand has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:28,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:28,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:28,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:30,162 INFO L124 PetriNetUnfolderBase]: 2001/2914 cut-off events. [2024-11-22 13:44:30,162 INFO L125 PetriNetUnfolderBase]: For 38860/38860 co-relation queries the response was YES. [2024-11-22 13:44:30,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19582 conditions, 2914 events. 2001/2914 cut-off events. For 38860/38860 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 13029 event pairs, 241 based on Foata normal form. 1/2915 useless extension candidates. Maximal degree in co-relation 19450. Up to 1062 conditions per place. [2024-11-22 13:44:30,180 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 177 selfloop transitions, 126 changer transitions 3/307 dead transitions. [2024-11-22 13:44:30,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 307 transitions, 3721 flow [2024-11-22 13:44:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:44:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 13:44:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 231 transitions. [2024-11-22 13:44:30,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3725806451612903 [2024-11-22 13:44:30,183 INFO L175 Difference]: Start difference. First operand has 134 places, 216 transitions, 2415 flow. Second operand 20 states and 231 transitions. [2024-11-22 13:44:30,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 307 transitions, 3721 flow [2024-11-22 13:44:30,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 307 transitions, 3452 flow, removed 105 selfloop flow, removed 7 redundant places. [2024-11-22 13:44:30,251 INFO L231 Difference]: Finished difference. Result has 144 places, 225 transitions, 2557 flow [2024-11-22 13:44:30,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2557, PETRI_PLACES=144, PETRI_TRANSITIONS=225} [2024-11-22 13:44:30,253 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-11-22 13:44:30,253 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 225 transitions, 2557 flow [2024-11-22 13:44:30,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:30,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:30,254 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:30,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 13:44:30,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 13:44:30,458 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)] === [2024-11-22 13:44:30,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash 936161629, now seen corresponding path program 4 times [2024-11-22 13:44:30,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:30,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382495139] [2024-11-22 13:44:30,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:30,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:30,518 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:30,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:31,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:31,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382495139] [2024-11-22 13:44:31,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382495139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:31,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738019221] [2024-11-22 13:44:31,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:44:31,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:31,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:31,303 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) [2024-11-22 13:44:31,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:44:31,475 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:44:31,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:31,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 13:44:31,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:31,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:31,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-11-22 13:44:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:31,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:31,983 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:44:31,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:44:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:32,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738019221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:32,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:32,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2024-11-22 13:44:32,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526438134] [2024-11-22 13:44:32,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:32,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 13:44:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 13:44:32,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-11-22 13:44:32,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:32,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 225 transitions, 2557 flow. Second operand has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:32,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:32,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:32,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:36,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:44:40,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:44:41,911 INFO L124 PetriNetUnfolderBase]: 2015/2940 cut-off events. [2024-11-22 13:44:41,912 INFO L125 PetriNetUnfolderBase]: For 42878/42878 co-relation queries the response was YES. [2024-11-22 13:44:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20137 conditions, 2940 events. 2015/2940 cut-off events. For 42878/42878 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 13159 event pairs, 238 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 20003. Up to 1037 conditions per place. [2024-11-22 13:44:41,930 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 163 selfloop transitions, 139 changer transitions 4/307 dead transitions. [2024-11-22 13:44:41,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 307 transitions, 3806 flow [2024-11-22 13:44:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:44:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 13:44:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 230 transitions. [2024-11-22 13:44:41,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-11-22 13:44:41,932 INFO L175 Difference]: Start difference. First operand has 144 places, 225 transitions, 2557 flow. Second operand 20 states and 230 transitions. [2024-11-22 13:44:41,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 307 transitions, 3806 flow [2024-11-22 13:44:42,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 307 transitions, 3600 flow, removed 21 selfloop flow, removed 14 redundant places. [2024-11-22 13:44:42,008 INFO L231 Difference]: Finished difference. Result has 151 places, 229 transitions, 2705 flow [2024-11-22 13:44:42,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2705, PETRI_PLACES=151, PETRI_TRANSITIONS=229} [2024-11-22 13:44:42,009 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-11-22 13:44:42,009 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 229 transitions, 2705 flow [2024-11-22 13:44:42,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:42,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:42,009 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:42,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 13:44:42,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:42,216 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)] === [2024-11-22 13:44:42,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:42,217 INFO L85 PathProgramCache]: Analyzing trace with hash 166099689, now seen corresponding path program 5 times [2024-11-22 13:44:42,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:42,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463180142] [2024-11-22 13:44:42,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:42,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:42,295 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:44:42,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 13:44:43,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:43,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463180142] [2024-11-22 13:44:43,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463180142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:43,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642187266] [2024-11-22 13:44:43,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:44:43,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:43,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:43,226 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) [2024-11-22 13:44:43,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:44:43,513 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:44:43,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:43,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 13:44:43,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:43,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:43,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2024-11-22 13:44:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:43,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:44,236 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-22 13:44:44,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 212 [2024-11-22 13:44:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:52,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642187266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:52,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:52,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 9] total 30 [2024-11-22 13:44:52,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363423620] [2024-11-22 13:44:52,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:52,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 13:44:52,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:52,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 13:44:52,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2024-11-22 13:44:52,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:52,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 229 transitions, 2705 flow. Second operand has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:52,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:52,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:52,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:54,610 INFO L124 PetriNetUnfolderBase]: 2968/4282 cut-off events. [2024-11-22 13:44:54,610 INFO L125 PetriNetUnfolderBase]: For 67751/67751 co-relation queries the response was YES. [2024-11-22 13:44:54,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30138 conditions, 4282 events. 2968/4282 cut-off events. For 67751/67751 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 20250 event pairs, 273 based on Foata normal form. 1/4283 useless extension candidates. Maximal degree in co-relation 30002. Up to 2466 conditions per place. [2024-11-22 13:44:54,642 INFO L140 encePairwiseOnDemand]: 16/31 looper letters, 222 selfloop transitions, 175 changer transitions 40/438 dead transitions. [2024-11-22 13:44:54,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 438 transitions, 5738 flow [2024-11-22 13:44:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 13:44:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 13:44:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 280 transitions. [2024-11-22 13:44:54,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-11-22 13:44:54,644 INFO L175 Difference]: Start difference. First operand has 151 places, 229 transitions, 2705 flow. Second operand 24 states and 280 transitions. [2024-11-22 13:44:54,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 438 transitions, 5738 flow [2024-11-22 13:44:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 438 transitions, 5482 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-11-22 13:44:54,762 INFO L231 Difference]: Finished difference. Result has 170 places, 305 transitions, 4124 flow [2024-11-22 13:44:54,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4124, PETRI_PLACES=170, PETRI_TRANSITIONS=305} [2024-11-22 13:44:54,764 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-11-22 13:44:54,764 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 305 transitions, 4124 flow [2024-11-22 13:44:54,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:54,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:44:54,764 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:44:54,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 13:44:54,965 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,SelfDestructingSolverStorable17 [2024-11-22 13:44:54,965 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)] === [2024-11-22 13:44:54,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:44:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -42657665, now seen corresponding path program 6 times [2024-11-22 13:44:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:44:54,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785161959] [2024-11-22 13:44:54,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:44:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:44:55,028 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 13:44:55,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 13:44:57,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:44:57,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785161959] [2024-11-22 13:44:57,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785161959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:44:57,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239302359] [2024-11-22 13:44:57,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:44:57,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:44:57,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:44:57,747 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) [2024-11-22 13:44:57,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:44:57,935 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 13:44:57,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:44:57,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 13:44:57,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:58,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:44:58,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-11-22 13:44:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:58,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:58,910 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:44:58,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:44:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:44:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239302359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:59,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:59,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 9] total 45 [2024-11-22 13:44:59,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586324032] [2024-11-22 13:44:59,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:59,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-22 13:44:59,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:59,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-22 13:44:59,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1765, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 13:44:59,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:44:59,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 305 transitions, 4124 flow. Second operand has 45 states, 45 states have (on average 5.844444444444444) internal successors, (263), 45 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:44:59,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:59,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:44:59,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:01,501 INFO L124 PetriNetUnfolderBase]: 2778/4038 cut-off events. [2024-11-22 13:45:01,501 INFO L125 PetriNetUnfolderBase]: For 112185/112185 co-relation queries the response was YES. [2024-11-22 13:45:01,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32858 conditions, 4038 events. 2778/4038 cut-off events. For 112185/112185 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 19305 event pairs, 331 based on Foata normal form. 1/4039 useless extension candidates. Maximal degree in co-relation 32706. Up to 1814 conditions per place. [2024-11-22 13:45:01,535 INFO L140 encePairwiseOnDemand]: 14/31 looper letters, 245 selfloop transitions, 154 changer transitions 1/401 dead transitions. [2024-11-22 13:45:01,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 401 transitions, 5742 flow [2024-11-22 13:45:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 13:45:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-22 13:45:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 275 transitions. [2024-11-22 13:45:01,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3411910669975186 [2024-11-22 13:45:01,536 INFO L175 Difference]: Start difference. First operand has 170 places, 305 transitions, 4124 flow. Second operand 26 states and 275 transitions. [2024-11-22 13:45:01,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 401 transitions, 5742 flow [2024-11-22 13:45:01,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 401 transitions, 5462 flow, removed 98 selfloop flow, removed 6 redundant places. [2024-11-22 13:45:01,739 INFO L231 Difference]: Finished difference. Result has 192 places, 317 transitions, 4408 flow [2024-11-22 13:45:01,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4408, PETRI_PLACES=192, PETRI_TRANSITIONS=317} [2024-11-22 13:45:01,739 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-11-22 13:45:01,740 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 317 transitions, 4408 flow [2024-11-22 13:45:01,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.844444444444444) internal successors, (263), 45 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:01,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:01,740 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:01,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 13:45:01,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:01,945 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)] === [2024-11-22 13:45:01,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1829909433, now seen corresponding path program 7 times [2024-11-22 13:45:01,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:01,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777104924] [2024-11-22 13:45:01,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:45:01,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:03,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:03,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777104924] [2024-11-22 13:45:03,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777104924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:03,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603485498] [2024-11-22 13:45:03,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:45:03,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:03,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:03,154 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) [2024-11-22 13:45:03,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:45:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:03,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 13:45:03,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:03,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:45:03,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-11-22 13:45:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:03,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:04,272 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:45:04,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:45:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:04,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603485498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:45:04,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:45:04,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 30 [2024-11-22 13:45:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154716778] [2024-11-22 13:45:04,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:45:04,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 13:45:04,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 13:45:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2024-11-22 13:45:04,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:45:04,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 317 transitions, 4408 flow. Second operand has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:04,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:04,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:45:04,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:05,991 INFO L124 PetriNetUnfolderBase]: 2828/4111 cut-off events. [2024-11-22 13:45:05,991 INFO L125 PetriNetUnfolderBase]: For 122428/122428 co-relation queries the response was YES. [2024-11-22 13:45:06,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34329 conditions, 4111 events. 2828/4111 cut-off events. For 122428/122428 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 19763 event pairs, 350 based on Foata normal form. 1/4101 useless extension candidates. Maximal degree in co-relation 34168. Up to 1887 conditions per place. [2024-11-22 13:45:06,027 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 252 selfloop transitions, 132 changer transitions 1/386 dead transitions. [2024-11-22 13:45:06,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 386 transitions, 5805 flow [2024-11-22 13:45:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:45:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 13:45:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 188 transitions. [2024-11-22 13:45:06,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-11-22 13:45:06,029 INFO L175 Difference]: Start difference. First operand has 192 places, 317 transitions, 4408 flow. Second operand 16 states and 188 transitions. [2024-11-22 13:45:06,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 386 transitions, 5805 flow [2024-11-22 13:45:06,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 386 transitions, 5416 flow, removed 64 selfloop flow, removed 20 redundant places. [2024-11-22 13:45:06,233 INFO L231 Difference]: Finished difference. Result has 188 places, 321 transitions, 4388 flow [2024-11-22 13:45:06,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4038, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4388, PETRI_PLACES=188, PETRI_TRANSITIONS=321} [2024-11-22 13:45:06,234 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-11-22 13:45:06,234 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 321 transitions, 4388 flow [2024-11-22 13:45:06,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:06,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:06,234 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:06,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 13:45:06,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:06,435 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)] === [2024-11-22 13:45:06,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:06,436 INFO L85 PathProgramCache]: Analyzing trace with hash 540532143, now seen corresponding path program 8 times [2024-11-22 13:45:06,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:06,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499297636] [2024-11-22 13:45:06,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:06,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:45:06,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:07,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499297636] [2024-11-22 13:45:07,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499297636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959689016] [2024-11-22 13:45:07,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:07,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:07,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:07,382 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) [2024-11-22 13:45:07,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 13:45:07,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:45:07,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:07,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 13:45:07,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:07,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:45:07,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-11-22 13:45:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:07,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:08,220 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:45:08,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:45:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:08,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959689016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:45:08,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:45:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 26 [2024-11-22 13:45:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641542448] [2024-11-22 13:45:08,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:45:08,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 13:45:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 13:45:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:45:08,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:45:08,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 321 transitions, 4388 flow. Second operand has 26 states, 26 states have (on average 6.346153846153846) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:08,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:08,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:45:08,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:10,711 INFO L124 PetriNetUnfolderBase]: 2868/4186 cut-off events. [2024-11-22 13:45:10,711 INFO L125 PetriNetUnfolderBase]: For 104315/104315 co-relation queries the response was YES. [2024-11-22 13:45:10,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33663 conditions, 4186 events. 2868/4186 cut-off events. For 104315/104315 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 20448 event pairs, 249 based on Foata normal form. 2/4159 useless extension candidates. Maximal degree in co-relation 33516. Up to 1237 conditions per place. [2024-11-22 13:45:10,748 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 296 selfloop transitions, 172 changer transitions 3/472 dead transitions. [2024-11-22 13:45:10,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 472 transitions, 6782 flow [2024-11-22 13:45:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 13:45:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-22 13:45:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 315 transitions. [2024-11-22 13:45:10,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3503893214682981 [2024-11-22 13:45:10,754 INFO L175 Difference]: Start difference. First operand has 188 places, 321 transitions, 4388 flow. Second operand 29 states and 315 transitions. [2024-11-22 13:45:10,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 472 transitions, 6782 flow [2024-11-22 13:45:10,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 472 transitions, 6548 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-11-22 13:45:10,935 INFO L231 Difference]: Finished difference. Result has 209 places, 343 transitions, 4819 flow [2024-11-22 13:45:10,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4180, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4819, PETRI_PLACES=209, PETRI_TRANSITIONS=343} [2024-11-22 13:45:10,935 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-11-22 13:45:10,935 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 343 transitions, 4819 flow [2024-11-22 13:45:10,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.346153846153846) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:10,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:10,936 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:10,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 13:45:11,136 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,SelfDestructingSolverStorable20 [2024-11-22 13:45:11,137 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)] === [2024-11-22 13:45:11,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash 975540487, now seen corresponding path program 9 times [2024-11-22 13:45:11,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:11,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066861568] [2024-11-22 13:45:11,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:45:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:11,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:45:11,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:12,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:12,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066861568] [2024-11-22 13:45:12,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066861568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:12,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935145643] [2024-11-22 13:45:12,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:45:12,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:12,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:12,412 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) [2024-11-22 13:45:12,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 13:45:12,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:45:12,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:12,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-22 13:45:12,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:12,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:45:12,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-11-22 13:45:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:12,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:13,336 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-11-22 13:45:13,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-11-22 13:45:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:13,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935145643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:45:13,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:45:13,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 30 [2024-11-22 13:45:13,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711738466] [2024-11-22 13:45:13,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:45:13,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 13:45:13,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:13,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 13:45:13,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2024-11-22 13:45:13,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:45:13,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 343 transitions, 4819 flow. Second operand has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:13,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:13,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:45:13,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:16,502 INFO L124 PetriNetUnfolderBase]: 3095/4526 cut-off events. [2024-11-22 13:45:16,502 INFO L125 PetriNetUnfolderBase]: For 119746/119746 co-relation queries the response was YES. [2024-11-22 13:45:16,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37967 conditions, 4526 events. 3095/4526 cut-off events. For 119746/119746 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 22306 event pairs, 269 based on Foata normal form. 1/4516 useless extension candidates. Maximal degree in co-relation 37816. Up to 1554 conditions per place. [2024-11-22 13:45:16,542 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 289 selfloop transitions, 229 changer transitions 19/538 dead transitions. [2024-11-22 13:45:16,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 538 transitions, 7947 flow [2024-11-22 13:45:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-22 13:45:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-22 13:45:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 446 transitions. [2024-11-22 13:45:16,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35090479937057434 [2024-11-22 13:45:16,543 INFO L175 Difference]: Start difference. First operand has 209 places, 343 transitions, 4819 flow. Second operand 41 states and 446 transitions. [2024-11-22 13:45:16,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 538 transitions, 7947 flow [2024-11-22 13:45:16,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 538 transitions, 7576 flow, removed 60 selfloop flow, removed 18 redundant places. [2024-11-22 13:45:16,750 INFO L231 Difference]: Finished difference. Result has 241 places, 384 transitions, 5749 flow [2024-11-22 13:45:16,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4478, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5749, PETRI_PLACES=241, PETRI_TRANSITIONS=384} [2024-11-22 13:45:16,750 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-11-22 13:45:16,751 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 384 transitions, 5749 flow [2024-11-22 13:45:16,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:16,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:16,751 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:16,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 13:45:16,955 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,SelfDestructingSolverStorable21 [2024-11-22 13:45:16,956 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)] === [2024-11-22 13:45:16,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1421030337, now seen corresponding path program 10 times [2024-11-22 13:45:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:16,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343846113] [2024-11-22 13:45:16,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:45:16,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:16,996 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:45:16,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343846113] [2024-11-22 13:45:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343846113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838205434] [2024-11-22 13:45:17,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:45:17,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:17,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:17,721 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) [2024-11-22 13:45:17,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 13:45:17,871 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:45:17,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:17,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 13:45:17,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:18,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:45:18,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-11-22 13:45:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:18,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:18,542 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-22 13:45:18,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-11-22 13:45:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:24,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838205434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:45:24,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:45:24,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2024-11-22 13:45:24,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666823273] [2024-11-22 13:45:24,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:45:24,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 13:45:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:24,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 13:45:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2024-11-22 13:45:24,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:45:24,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 384 transitions, 5749 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:24,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:24,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:45:24,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:26,989 INFO L124 PetriNetUnfolderBase]: 3565/5251 cut-off events. [2024-11-22 13:45:26,990 INFO L125 PetriNetUnfolderBase]: For 192936/192936 co-relation queries the response was YES. [2024-11-22 13:45:27,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48144 conditions, 5251 events. 3565/5251 cut-off events. For 192936/192936 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 27031 event pairs, 512 based on Foata normal form. 2/5242 useless extension candidates. Maximal degree in co-relation 47983. Up to 3853 conditions per place. [2024-11-22 13:45:27,042 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 370 selfloop transitions, 173 changer transitions 2/546 dead transitions. [2024-11-22 13:45:27,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 546 transitions, 9064 flow [2024-11-22 13:45:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 13:45:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 13:45:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 262 transitions. [2024-11-22 13:45:27,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36746143057503505 [2024-11-22 13:45:27,048 INFO L175 Difference]: Start difference. First operand has 241 places, 384 transitions, 5749 flow. Second operand 23 states and 262 transitions. [2024-11-22 13:45:27,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 546 transitions, 9064 flow [2024-11-22 13:45:27,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 546 transitions, 8258 flow, removed 155 selfloop flow, removed 27 redundant places. [2024-11-22 13:45:27,487 INFO L231 Difference]: Finished difference. Result has 241 places, 452 transitions, 6686 flow [2024-11-22 13:45:27,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6686, PETRI_PLACES=241, PETRI_TRANSITIONS=452} [2024-11-22 13:45:27,487 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-11-22 13:45:27,487 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 452 transitions, 6686 flow [2024-11-22 13:45:27,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:27,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:27,488 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:27,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 13:45:27,688 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,SelfDestructingSolverStorable22 [2024-11-22 13:45:27,689 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)] === [2024-11-22 13:45:27,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:27,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2058698691, now seen corresponding path program 11 times [2024-11-22 13:45:27,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850899419] [2024-11-22 13:45:27,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:45:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:27,735 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:45:27,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:28,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850899419] [2024-11-22 13:45:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850899419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143703285] [2024-11-22 13:45:28,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:45:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:28,312 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) [2024-11-22 13:45:28,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 13:45:28,924 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:45:28,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:28,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-22 13:45:28,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:29,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:45:29,348 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 70 treesize of output 90 [2024-11-22 13:45:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:29,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:29,922 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-22 13:45:29,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-11-22 13:45:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:35,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143703285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:45:35,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:45:35,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 10] total 30 [2024-11-22 13:45:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955565293] [2024-11-22 13:45:35,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:45:35,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 13:45:35,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 13:45:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2024-11-22 13:45:35,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-22 13:45:35,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 452 transitions, 6686 flow. Second operand has 30 states, 30 states have (on average 6.266666666666667) internal successors, (188), 30 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:35,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:35,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-22 13:45:35,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:37,903 INFO L124 PetriNetUnfolderBase]: 4577/6738 cut-off events. [2024-11-22 13:45:37,903 INFO L125 PetriNetUnfolderBase]: For 260635/260635 co-relation queries the response was YES. [2024-11-22 13:45:37,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62766 conditions, 6738 events. 4577/6738 cut-off events. For 260635/260635 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 36241 event pairs, 594 based on Foata normal form. 2/6729 useless extension candidates. Maximal degree in co-relation 62599. Up to 4464 conditions per place. [2024-11-22 13:45:37,979 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 419 selfloop transitions, 216 changer transitions 2/638 dead transitions. [2024-11-22 13:45:37,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 638 transitions, 10726 flow [2024-11-22 13:45:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 13:45:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 13:45:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 251 transitions. [2024-11-22 13:45:37,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38556067588325654 [2024-11-22 13:45:37,981 INFO L175 Difference]: Start difference. First operand has 241 places, 452 transitions, 6686 flow. Second operand 21 states and 251 transitions. [2024-11-22 13:45:37,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 638 transitions, 10726 flow [2024-11-22 13:45:38,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 638 transitions, 10568 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-11-22 13:45:38,618 INFO L231 Difference]: Finished difference. Result has 261 places, 521 transitions, 8365 flow [2024-11-22 13:45:38,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6556, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8365, PETRI_PLACES=261, PETRI_TRANSITIONS=521} [2024-11-22 13:45:38,618 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-11-22 13:45:38,619 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 521 transitions, 8365 flow [2024-11-22 13:45:38,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.266666666666667) internal successors, (188), 30 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:38,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:38,619 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:38,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 13:45:38,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:38,820 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)] === [2024-11-22 13:45:38,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash -683507001, now seen corresponding path program 12 times [2024-11-22 13:45:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:38,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406931873] [2024-11-22 13:45:38,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:45:38,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:38,867 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:45:38,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:39,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:39,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406931873] [2024-11-22 13:45:39,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406931873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:39,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182538903] [2024-11-22 13:45:39,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:45:39,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:39,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:39,489 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) [2024-11-22 13:45:39,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 13:45:39,645 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:45:39,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:39,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 13:45:39,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:39,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:45:39,893 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 59 treesize of output 75 [2024-11-22 13:45:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:39,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:40,316 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-22 13:45:40,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210