./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-lamport.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 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:43:13,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:43:13,789 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:43:13,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:43:13,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:43:13,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:43:13,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:43:13,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:43:13,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:43:13,827 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:43:13,828 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:43:13,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:43:13,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:43:13,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:43:13,830 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:43:13,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:43:13,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:43:13,831 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:43:13,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:43:13,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:43:13,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:43:13,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:43:13,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:43:13,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:43:13,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:43:13,834 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:43:13,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:43:13,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:43:13,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:43:13,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:43:13,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:43:13,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:43:13,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:43:13,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:43:13,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:43:13,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:43:13,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:43:13,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:43:13,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:43:13,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:43:13,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:43:13,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:43:13,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 [2024-11-09 02:43:14,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:43:14,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:43:14,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:43:14,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:43:14,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:43:14,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-09 02:43:15,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:43:15,908 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:43:15,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-09 02:43:15,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc4ec250/260618f9e20847b5b2191f3306bad5ae/FLAG1b7347429 [2024-11-09 02:43:15,930 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc4ec250/260618f9e20847b5b2191f3306bad5ae [2024-11-09 02:43:15,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:43:15,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:43:15,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:43:15,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:43:15,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:43:15,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:43:15" (1/1) ... [2024-11-09 02:43:15,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448d6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:15, skipping insertion in model container [2024-11-09 02:43:15,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:43:15" (1/1) ... [2024-11-09 02:43:15,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:43:16,178 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/parallel-lamport.wvr.c[3044,3057] [2024-11-09 02:43:16,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:43:16,198 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:43:16,226 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/parallel-lamport.wvr.c[3044,3057] [2024-11-09 02:43:16,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:43:16,263 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:43:16,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16 WrapperNode [2024-11-09 02:43:16,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:43:16,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:43:16,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:43:16,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:43:16,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,330 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 207 [2024-11-09 02:43:16,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:43:16,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:43:16,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:43:16,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:43:16,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,375 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 02:43:16,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:43:16,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:43:16,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:43:16,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:43:16,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (1/1) ... [2024-11-09 02:43:16,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:43:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:16,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:43:16,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:43:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:43:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:43:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:43:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:43:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:43:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:43:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:43:16,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:43:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:43:16,491 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:43:16,588 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:43:16,590 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:43:16,893 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:43:16,894 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:43:17,162 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:43:17,163 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 02:43:17,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:43:17 BoogieIcfgContainer [2024-11-09 02:43:17,163 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:43:17,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:43:17,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:43:17,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:43:17,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:43:15" (1/3) ... [2024-11-09 02:43:17,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:43:17, skipping insertion in model container [2024-11-09 02:43:17,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:16" (2/3) ... [2024-11-09 02:43:17,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:43:17, skipping insertion in model container [2024-11-09 02:43:17,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:43:17" (3/3) ... [2024-11-09 02:43:17,175 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-11-09 02:43:17,195 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:43:17,195 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:43:17,196 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:43:17,261 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:43:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 141 flow [2024-11-09 02:43:17,354 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2024-11-09 02:43:17,356 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:43:17,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 1/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-09 02:43:17,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 60 transitions, 141 flow [2024-11-09 02:43:17,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 130 flow [2024-11-09 02:43:17,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:43:17,381 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;@19a52d39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:43:17,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:43:17,409 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:43:17,409 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-11-09 02:43:17,411 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:43:17,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:17,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:17,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:17,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash 397029173, now seen corresponding path program 1 times [2024-11-09 02:43:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:17,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99728812] [2024-11-09 02:43:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:18,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:18,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99728812] [2024-11-09 02:43:18,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99728812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:18,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:18,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:43:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956908914] [2024-11-09 02:43:18,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:18,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:43:18,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:43:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:43:18,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-11-09 02:43:18,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:18,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:18,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-11-09 02:43:18,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:18,419 INFO L124 PetriNetUnfolderBase]: 307/620 cut-off events. [2024-11-09 02:43:18,419 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-09 02:43:18,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 620 events. 307/620 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3464 event pairs, 306 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 1036. Up to 507 conditions per place. [2024-11-09 02:43:18,433 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 28 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-09 02:43:18,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 192 flow [2024-11-09 02:43:18,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:43:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:43:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-09 02:43:18,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-11-09 02:43:18,449 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 130 flow. Second operand 3 states and 121 transitions. [2024-11-09 02:43:18,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 192 flow [2024-11-09 02:43:18,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 180 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:43:18,461 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 130 flow [2024-11-09 02:43:18,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-11-09 02:43:18,469 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-09 02:43:18,469 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 130 flow [2024-11-09 02:43:18,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:18,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:18,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:18,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:43:18,470 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:18,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1513207931, now seen corresponding path program 1 times [2024-11-09 02:43:18,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:18,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877523229] [2024-11-09 02:43:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:18,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:19,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877523229] [2024-11-09 02:43:19,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877523229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384849301] [2024-11-09 02:43:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:19,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:19,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:19,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:19,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:43:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:19,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 02:43:19,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:19,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 02:43:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:20,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:21,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-09 02:43:21,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:43:21,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-09 02:43:21,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-11-09 02:43:21,665 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-09 02:43:21,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-09 02:43:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384849301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:21,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:21,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2024-11-09 02:43:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447693526] [2024-11-09 02:43:21,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:21,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 02:43:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 02:43:21,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-09 02:43:22,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-09 02:43:22,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 130 flow. Second operand has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:22,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:22,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-09 02:43:22,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:25,467 INFO L124 PetriNetUnfolderBase]: 4073/6876 cut-off events. [2024-11-09 02:43:25,467 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-09 02:43:25,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13409 conditions, 6876 events. 4073/6876 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 48346 event pairs, 563 based on Foata normal form. 4/6840 useless extension candidates. Maximal degree in co-relation 13379. Up to 1476 conditions per place. [2024-11-09 02:43:25,509 INFO L140 encePairwiseOnDemand]: 40/60 looper letters, 218 selfloop transitions, 122 changer transitions 95/453 dead transitions. [2024-11-09 02:43:25,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 453 transitions, 1862 flow [2024-11-09 02:43:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-09 02:43:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-09 02:43:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1342 transitions. [2024-11-09 02:43:25,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201550387596899 [2024-11-09 02:43:25,524 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 130 flow. Second operand 43 states and 1342 transitions. [2024-11-09 02:43:25,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 453 transitions, 1862 flow [2024-11-09 02:43:25,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 453 transitions, 1858 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:25,534 INFO L231 Difference]: Finished difference. Result has 120 places, 188 transitions, 845 flow [2024-11-09 02:43:25,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=845, PETRI_PLACES=120, PETRI_TRANSITIONS=188} [2024-11-09 02:43:25,535 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-09 02:43:25,538 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 188 transitions, 845 flow [2024-11-09 02:43:25,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:25,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:25,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:25,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:43:25,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:25,741 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:25,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1608375147, now seen corresponding path program 2 times [2024-11-09 02:43:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749701158] [2024-11-09 02:43:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:25,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:25,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749701158] [2024-11-09 02:43:25,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749701158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:25,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:25,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:43:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951846561] [2024-11-09 02:43:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:25,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:43:25,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:43:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:43:25,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-09 02:43:25,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 188 transitions, 845 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 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) [2024-11-09 02:43:25,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:25,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-09 02:43:25,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:26,951 INFO L124 PetriNetUnfolderBase]: 4728/8589 cut-off events. [2024-11-09 02:43:26,951 INFO L125 PetriNetUnfolderBase]: For 12092/12284 co-relation queries the response was YES. [2024-11-09 02:43:26,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22962 conditions, 8589 events. 4728/8589 cut-off events. For 12092/12284 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 64376 event pairs, 1236 based on Foata normal form. 135/8492 useless extension candidates. Maximal degree in co-relation 22923. Up to 3149 conditions per place. [2024-11-09 02:43:27,027 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 166 selfloop transitions, 7 changer transitions 4/273 dead transitions. [2024-11-09 02:43:27,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 273 transitions, 1596 flow [2024-11-09 02:43:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:43:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:43:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-09 02:43:27,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-11-09 02:43:27,029 INFO L175 Difference]: Start difference. First operand has 120 places, 188 transitions, 845 flow. Second operand 5 states and 194 transitions. [2024-11-09 02:43:27,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 273 transitions, 1596 flow [2024-11-09 02:43:27,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 273 transitions, 1554 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-09 02:43:27,193 INFO L231 Difference]: Finished difference. Result has 120 places, 192 transitions, 858 flow [2024-11-09 02:43:27,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=120, PETRI_TRANSITIONS=192} [2024-11-09 02:43:27,194 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-09 02:43:27,194 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 192 transitions, 858 flow [2024-11-09 02:43:27,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 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) [2024-11-09 02:43:27,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:27,197 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:27,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:43:27,197 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:27,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash -671902333, now seen corresponding path program 3 times [2024-11-09 02:43:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:27,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592610024] [2024-11-09 02:43:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:27,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:27,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592610024] [2024-11-09 02:43:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592610024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572317854] [2024-11-09 02:43:27,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:43:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:27,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:27,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:43:27,968 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:43:27,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:27,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 02:43:27,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:28,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:43:28,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-09 02:43:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:28,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:43:28,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572317854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:28,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:43:28,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 18 [2024-11-09 02:43:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716412531] [2024-11-09 02:43:28,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:28,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:43:28,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:43:28,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:43:28,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-09 02:43:28,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 192 transitions, 858 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:28,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:28,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-09 02:43:28,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:31,482 INFO L124 PetriNetUnfolderBase]: 7108/12011 cut-off events. [2024-11-09 02:43:31,482 INFO L125 PetriNetUnfolderBase]: For 17144/17323 co-relation queries the response was YES. [2024-11-09 02:43:31,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 12011 events. 7108/12011 cut-off events. For 17144/17323 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86750 event pairs, 1361 based on Foata normal form. 179/12059 useless extension candidates. Maximal degree in co-relation 31480. Up to 7466 conditions per place. [2024-11-09 02:43:31,601 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 327 selfloop transitions, 180 changer transitions 42/569 dead transitions. [2024-11-09 02:43:31,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 569 transitions, 3716 flow [2024-11-09 02:43:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 02:43:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 02:43:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 929 transitions. [2024-11-09 02:43:31,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4553921568627451 [2024-11-09 02:43:31,608 INFO L175 Difference]: Start difference. First operand has 120 places, 192 transitions, 858 flow. Second operand 34 states and 929 transitions. [2024-11-09 02:43:31,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 569 transitions, 3716 flow [2024-11-09 02:43:31,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 569 transitions, 3712 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:31,773 INFO L231 Difference]: Finished difference. Result has 181 places, 354 transitions, 2479 flow [2024-11-09 02:43:31,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2479, PETRI_PLACES=181, PETRI_TRANSITIONS=354} [2024-11-09 02:43:31,774 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 116 predicate places. [2024-11-09 02:43:31,774 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 354 transitions, 2479 flow [2024-11-09 02:43:31,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:31,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:31,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:31,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:43:31,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 02:43:31,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:31,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 985432113, now seen corresponding path program 4 times [2024-11-09 02:43:31,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:31,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499068698] [2024-11-09 02:43:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:31,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:32,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499068698] [2024-11-09 02:43:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499068698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497410026] [2024-11-09 02:43:32,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:43:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:32,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:32,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:32,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:43:32,511 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:43:32,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:32,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 02:43:32,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:32,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:43:32,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-09 02:43:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:32,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:43:32,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497410026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:32,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:43:32,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 18 [2024-11-09 02:43:32,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688541687] [2024-11-09 02:43:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:32,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:43:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:43:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:43:32,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-09 02:43:32,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 354 transitions, 2479 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:32,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:32,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-09 02:43:32,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:36,718 INFO L124 PetriNetUnfolderBase]: 9629/16154 cut-off events. [2024-11-09 02:43:36,718 INFO L125 PetriNetUnfolderBase]: For 53504/53747 co-relation queries the response was YES. [2024-11-09 02:43:36,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60595 conditions, 16154 events. 9629/16154 cut-off events. For 53504/53747 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 122262 event pairs, 1751 based on Foata normal form. 243/16235 useless extension candidates. Maximal degree in co-relation 60330. Up to 9448 conditions per place. [2024-11-09 02:43:36,905 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 569 selfloop transitions, 305 changer transitions 37/931 dead transitions. [2024-11-09 02:43:36,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 931 transitions, 8158 flow [2024-11-09 02:43:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 02:43:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-09 02:43:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 962 transitions. [2024-11-09 02:43:36,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4580952380952381 [2024-11-09 02:43:36,910 INFO L175 Difference]: Start difference. First operand has 181 places, 354 transitions, 2479 flow. Second operand 35 states and 962 transitions. [2024-11-09 02:43:36,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 931 transitions, 8158 flow [2024-11-09 02:43:37,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 931 transitions, 7886 flow, removed 132 selfloop flow, removed 2 redundant places. [2024-11-09 02:43:37,729 INFO L231 Difference]: Finished difference. Result has 237 places, 643 transitions, 5650 flow [2024-11-09 02:43:37,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5650, PETRI_PLACES=237, PETRI_TRANSITIONS=643} [2024-11-09 02:43:37,730 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 172 predicate places. [2024-11-09 02:43:37,730 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 643 transitions, 5650 flow [2024-11-09 02:43:37,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:37,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:37,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:37,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:43:37,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:37,932 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:37,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1419450349, now seen corresponding path program 5 times [2024-11-09 02:43:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:37,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297238232] [2024-11-09 02:43:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:37,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:38,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297238232] [2024-11-09 02:43:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297238232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723297089] [2024-11-09 02:43:38,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:43:38,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:38,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:38,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:43:38,564 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:38,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:38,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 02:43:38,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:38,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:43:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:38,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:38,884 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 02:43:38,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 02:43:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:39,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723297089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:39,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:39,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-11-09 02:43:39,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298719427] [2024-11-09 02:43:39,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:39,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:43:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:43:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:43:39,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-09 02:43:39,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 643 transitions, 5650 flow. Second operand has 19 states, 19 states have (on average 24.36842105263158) internal successors, (463), 19 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:39,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:39,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-09 02:43:39,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:42,993 INFO L124 PetriNetUnfolderBase]: 9366/16061 cut-off events. [2024-11-09 02:43:42,993 INFO L125 PetriNetUnfolderBase]: For 91723/92083 co-relation queries the response was YES. [2024-11-09 02:43:43,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70306 conditions, 16061 events. 9366/16061 cut-off events. For 91723/92083 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 126350 event pairs, 1482 based on Foata normal form. 258/16096 useless extension candidates. Maximal degree in co-relation 69244. Up to 5417 conditions per place. [2024-11-09 02:43:43,192 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 573 selfloop transitions, 245 changer transitions 10/858 dead transitions. [2024-11-09 02:43:43,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 858 transitions, 8967 flow [2024-11-09 02:43:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:43:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:43:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 521 transitions. [2024-11-09 02:43:43,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107843137254902 [2024-11-09 02:43:43,195 INFO L175 Difference]: Start difference. First operand has 237 places, 643 transitions, 5650 flow. Second operand 17 states and 521 transitions. [2024-11-09 02:43:43,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 858 transitions, 8967 flow [2024-11-09 02:43:44,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 858 transitions, 8245 flow, removed 361 selfloop flow, removed 0 redundant places. [2024-11-09 02:43:44,602 INFO L231 Difference]: Finished difference. Result has 262 places, 733 transitions, 6792 flow [2024-11-09 02:43:44,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=5150, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6792, PETRI_PLACES=262, PETRI_TRANSITIONS=733} [2024-11-09 02:43:44,603 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 197 predicate places. [2024-11-09 02:43:44,603 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 733 transitions, 6792 flow [2024-11-09 02:43:44,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.36842105263158) internal successors, (463), 19 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:44,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:44,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:44,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:44,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:44,805 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:44,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:44,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1521122001, now seen corresponding path program 6 times [2024-11-09 02:43:44,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:44,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832701162] [2024-11-09 02:43:44,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:44,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:45,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832701162] [2024-11-09 02:43:45,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832701162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524550593] [2024-11-09 02:43:45,296 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:43:45,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:45,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:45,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:45,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:43:45,389 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-09 02:43:45,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:45,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 02:43:45,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:45,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:43:45,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-09 02:43:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:45,657 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:43:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524550593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:43:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-09 02:43:45,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407720935] [2024-11-09 02:43:45,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:45,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:43:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:43:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:43:45,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-09 02:43:45,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 733 transitions, 6792 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:45,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:45,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-09 02:43:45,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:51,649 INFO L124 PetriNetUnfolderBase]: 13011/21916 cut-off events. [2024-11-09 02:43:51,650 INFO L125 PetriNetUnfolderBase]: For 143103/143430 co-relation queries the response was YES. [2024-11-09 02:43:52,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101839 conditions, 21916 events. 13011/21916 cut-off events. For 143103/143430 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 174991 event pairs, 2278 based on Foata normal form. 327/22074 useless extension candidates. Maximal degree in co-relation 100859. Up to 14498 conditions per place. [2024-11-09 02:43:52,166 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 819 selfloop transitions, 382 changer transitions 50/1271 dead transitions. [2024-11-09 02:43:52,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1271 transitions, 14743 flow [2024-11-09 02:43:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 02:43:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 02:43:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 943 transitions. [2024-11-09 02:43:52,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46225490196078434 [2024-11-09 02:43:52,169 INFO L175 Difference]: Start difference. First operand has 262 places, 733 transitions, 6792 flow. Second operand 34 states and 943 transitions. [2024-11-09 02:43:52,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1271 transitions, 14743 flow [2024-11-09 02:43:54,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1271 transitions, 14569 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-11-09 02:43:54,756 INFO L231 Difference]: Finished difference. Result has 311 places, 989 transitions, 10935 flow [2024-11-09 02:43:54,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=6712, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=10935, PETRI_PLACES=311, PETRI_TRANSITIONS=989} [2024-11-09 02:43:54,757 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 246 predicate places. [2024-11-09 02:43:54,757 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 989 transitions, 10935 flow [2024-11-09 02:43:54,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:54,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:54,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:54,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:43:54,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:54,959 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:54,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1486415839, now seen corresponding path program 7 times [2024-11-09 02:43:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:54,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3204027] [2024-11-09 02:43:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:55,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:55,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3204027] [2024-11-09 02:43:55,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3204027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28634253] [2024-11-09 02:43:55,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:43:55,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:55,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:55,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:55,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:43:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:55,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 02:43:55,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:55,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:43:55,859 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 02:43:55,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2024-11-09 02:43:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:56,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:56,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-09 02:43:56,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:43:56,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-09 02:43:57,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-11-09 02:43:57,066 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-09 02:43:57,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-09 02:43:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:57,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28634253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:57,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2024-11-09 02:43:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860573323] [2024-11-09 02:43:57,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:57,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 02:43:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 02:43:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-09 02:43:57,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-09 02:43:57,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 989 transitions, 10935 flow. Second operand has 26 states, 26 states have (on average 24.53846153846154) internal successors, (638), 26 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:57,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:57,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-09 02:43:57,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:04,662 INFO L124 PetriNetUnfolderBase]: 14397/24929 cut-off events. [2024-11-09 02:44:04,663 INFO L125 PetriNetUnfolderBase]: For 207943/208392 co-relation queries the response was YES. [2024-11-09 02:44:05,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125634 conditions, 24929 events. 14397/24929 cut-off events. For 207943/208392 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 213866 event pairs, 1728 based on Foata normal form. 398/25092 useless extension candidates. Maximal degree in co-relation 124667. Up to 7090 conditions per place. [2024-11-09 02:44:05,653 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 466 selfloop transitions, 143 changer transitions 911/1555 dead transitions. [2024-11-09 02:44:05,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 1555 transitions, 19730 flow [2024-11-09 02:44:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 02:44:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 02:44:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1035 transitions. [2024-11-09 02:44:05,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-11-09 02:44:05,660 INFO L175 Difference]: Start difference. First operand has 311 places, 989 transitions, 10935 flow. Second operand 34 states and 1035 transitions. [2024-11-09 02:44:05,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 1555 transitions, 19730 flow [2024-11-09 02:44:09,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1555 transitions, 18355 flow, removed 629 selfloop flow, removed 3 redundant places. [2024-11-09 02:44:09,908 INFO L231 Difference]: Finished difference. Result has 357 places, 551 transitions, 5360 flow [2024-11-09 02:44:09,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=9893, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=854, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5360, PETRI_PLACES=357, PETRI_TRANSITIONS=551} [2024-11-09 02:44:09,910 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 292 predicate places. [2024-11-09 02:44:09,910 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 551 transitions, 5360 flow [2024-11-09 02:44:09,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 24.53846153846154) internal successors, (638), 26 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:44:09,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:09,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:09,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 02:44:10,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:10,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:44:10,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2069612093, now seen corresponding path program 8 times [2024-11-09 02:44:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690155871] [2024-11-09 02:44:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:10,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:10,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690155871] [2024-11-09 02:44:10,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690155871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:10,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944485422] [2024-11-09 02:44:10,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:44:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:10,547 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:44:10,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:44:10,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:44:10,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:10,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 02:44:10,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:10,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:44:10,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-09 02:44:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:10,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:44:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944485422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:10,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:44:10,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-09 02:44:10,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597100130] [2024-11-09 02:44:10,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:10,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:44:10,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:10,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:44:10,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:44:11,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-09 02:44:11,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 551 transitions, 5360 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:44:11,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:11,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-09 02:44:11,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:16,581 INFO L124 PetriNetUnfolderBase]: 11409/19290 cut-off events. [2024-11-09 02:44:16,581 INFO L125 PetriNetUnfolderBase]: For 200089/200348 co-relation queries the response was YES. [2024-11-09 02:44:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99318 conditions, 19290 events. 11409/19290 cut-off events. For 200089/200348 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 152679 event pairs, 2064 based on Foata normal form. 258/19354 useless extension candidates. Maximal degree in co-relation 99196. Up to 12612 conditions per place. [2024-11-09 02:44:17,619 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 662 selfloop transitions, 300 changer transitions 140/1122 dead transitions. [2024-11-09 02:44:17,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1122 transitions, 13310 flow [2024-11-09 02:44:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 02:44:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-09 02:44:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1039 transitions. [2024-11-09 02:44:17,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.444017094017094 [2024-11-09 02:44:17,623 INFO L175 Difference]: Start difference. First operand has 357 places, 551 transitions, 5360 flow. Second operand 39 states and 1039 transitions. [2024-11-09 02:44:17,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1122 transitions, 13310 flow [2024-11-09 02:44:20,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1122 transitions, 12132 flow, removed 391 selfloop flow, removed 39 redundant places. [2024-11-09 02:44:20,262 INFO L231 Difference]: Finished difference. Result has 365 places, 742 transitions, 8242 flow [2024-11-09 02:44:20,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=4650, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=8242, PETRI_PLACES=365, PETRI_TRANSITIONS=742} [2024-11-09 02:44:20,264 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 300 predicate places. [2024-11-09 02:44:20,264 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 742 transitions, 8242 flow [2024-11-09 02:44:20,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:44:20,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:20,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:20,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 02:44:20,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:20,465 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:44:20,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:20,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1752509355, now seen corresponding path program 9 times [2024-11-09 02:44:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:20,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141169933] [2024-11-09 02:44:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:20,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:20,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141169933] [2024-11-09 02:44:20,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141169933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548035767] [2024-11-09 02:44:20,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:44:20,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:20,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:44:20,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:44:20,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:44:20,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:20,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 02:44:20,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:21,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:44:21,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-09 02:44:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:21,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:44:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548035767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:44:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 20 [2024-11-09 02:44:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953453486] [2024-11-09 02:44:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:21,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:44:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:44:21,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:44:21,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-09 02:44:21,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 742 transitions, 8242 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:44:21,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:21,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-09 02:44:21,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:27,448 INFO L124 PetriNetUnfolderBase]: 12164/20442 cut-off events. [2024-11-09 02:44:27,448 INFO L125 PetriNetUnfolderBase]: For 269151/269398 co-relation queries the response was YES. [2024-11-09 02:44:27,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114941 conditions, 20442 events. 12164/20442 cut-off events. For 269151/269398 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 162736 event pairs, 2046 based on Foata normal form. 244/20487 useless extension candidates. Maximal degree in co-relation 114823. Up to 11904 conditions per place. [2024-11-09 02:44:27,959 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 738 selfloop transitions, 406 changer transitions 73/1237 dead transitions. [2024-11-09 02:44:27,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1237 transitions, 15961 flow [2024-11-09 02:44:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 02:44:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-09 02:44:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1074 transitions. [2024-11-09 02:44:27,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-11-09 02:44:27,962 INFO L175 Difference]: Start difference. First operand has 365 places, 742 transitions, 8242 flow. Second operand 40 states and 1074 transitions. [2024-11-09 02:44:27,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1237 transitions, 15961 flow [2024-11-09 02:44:32,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1237 transitions, 14498 flow, removed 615 selfloop flow, removed 20 redundant places. [2024-11-09 02:44:32,691 INFO L231 Difference]: Finished difference. Result has 377 places, 928 transitions, 11159 flow [2024-11-09 02:44:32,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=11159, PETRI_PLACES=377, PETRI_TRANSITIONS=928} [2024-11-09 02:44:32,693 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 312 predicate places. [2024-11-09 02:44:32,693 INFO L471 AbstractCegarLoop]: Abstraction has has 377 places, 928 transitions, 11159 flow [2024-11-09 02:44:32,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:44:32,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:32,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:32,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 02:44:32,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 02:44:32,895 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:44:32,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -202934643, now seen corresponding path program 10 times [2024-11-09 02:44:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:32,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038255938] [2024-11-09 02:44:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:33,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:33,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038255938] [2024-11-09 02:44:33,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038255938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:33,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088691240] [2024-11-09 02:44:33,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:44:33,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:33,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:33,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:44:33,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:44:33,336 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:44:33,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:33,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 02:44:33,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:33,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:44:33,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-09 02:44:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:33,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:44:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088691240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:33,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:44:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-09 02:44:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887824969] [2024-11-09 02:44:33,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:33,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:44:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:44:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:44:33,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-09 02:44:33,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 928 transitions, 11159 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:44:33,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:33,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-09 02:44:33,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand