./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:38:20,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:38:20,275 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:38:20,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:38:20,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:38:20,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:38:20,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:38:20,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:38:20,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:38:20,304 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:38:20,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:38:20,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:38:20,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:38:20,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:38:20,305 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:38:20,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:38:20,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:38:20,307 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:38:20,307 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:38:20,307 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:38:20,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:38:20,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:38:20,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:38:20,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:38:20,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:38:20,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:38:20,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:38:20,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:38:20,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:38:20,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:38:20,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:38:20,308 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:38:20,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:38:20,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:38:20,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:38:20,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:38:20,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:38:20,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:38:20,309 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:38:20,309 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 [2025-01-09 16:38:20,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:38:20,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:38:20,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:38:20,548 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:38:20,548 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:38:20,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2025-01-09 16:38:21,698 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebacf7a24/4d025f919a0c46dfbda039bc6fc60c94/FLAGc7a87e994 [2025-01-09 16:38:21,933 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:38:21,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2025-01-09 16:38:21,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebacf7a24/4d025f919a0c46dfbda039bc6fc60c94/FLAGc7a87e994 [2025-01-09 16:38:21,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebacf7a24/4d025f919a0c46dfbda039bc6fc60c94 [2025-01-09 16:38:21,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:38:21,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:38:21,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:38:21,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:38:21,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:38:21,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:38:21" (1/1) ... [2025-01-09 16:38:21,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d40c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:21, skipping insertion in model container [2025-01-09 16:38:21,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:38:21" (1/1) ... [2025-01-09 16:38:22,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:38:22,120 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3073,3086] [2025-01-09 16:38:22,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:38:22,137 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:38:22,159 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3073,3086] [2025-01-09 16:38:22,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:38:22,180 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:38:22,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22 WrapperNode [2025-01-09 16:38:22,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:38:22,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:38:22,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:38:22,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:38:22,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,218 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 249 [2025-01-09 16:38:22,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:38:22,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:38:22,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:38:22,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:38:22,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,253 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-01-09 16:38:22,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,261 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,269 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:38:22,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:38:22,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:38:22,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:38:22,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (1/1) ... [2025-01-09 16:38:22,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:38:22,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:22,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:38:22,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:38:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:38:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:38:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:38:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:38:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:38:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:38:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:38:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:38:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:38:22,334 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:38:22,412 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:38:22,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:38:22,726 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:38:22,726 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:38:23,019 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:38:23,020 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:38:23,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:38:23 BoogieIcfgContainer [2025-01-09 16:38:23,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:38:23,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:38:23,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:38:23,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:38:23,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:38:21" (1/3) ... [2025-01-09 16:38:23,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b517539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:38:23, skipping insertion in model container [2025-01-09 16:38:23,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:38:22" (2/3) ... [2025-01-09 16:38:23,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b517539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:38:23, skipping insertion in model container [2025-01-09 16:38:23,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:38:23" (3/3) ... [2025-01-09 16:38:23,028 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2025-01-09 16:38:23,038 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:38:23,039 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-trans.wvr.c that has 4 procedures, 26 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 16:38:23,039 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:38:23,093 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-09 16:38:23,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2025-01-09 16:38:23,140 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2025-01-09 16:38:23,142 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:38:23,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2025-01-09 16:38:23,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2025-01-09 16:38:23,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2025-01-09 16:38:23,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:38:23,165 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;@731b903b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:38:23,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-09 16:38:23,176 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:38:23,177 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2025-01-09 16:38:23,177 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:38:23,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:23,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:23,178 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)] === [2025-01-09 16:38:23,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:23,181 INFO L85 PathProgramCache]: Analyzing trace with hash -131556750, now seen corresponding path program 1 times [2025-01-09 16:38:23,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132720889] [2025-01-09 16:38:23,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:23,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 16:38:23,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 16:38:23,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:23,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:23,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:23,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132720889] [2025-01-09 16:38:23,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132720889] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:23,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:23,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:38:23,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468892752] [2025-01-09 16:38:23,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:23,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:38:23,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:23,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:38:23,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:38:23,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:23,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:23,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:23,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:23,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:23,642 INFO L124 PetriNetUnfolderBase]: 202/302 cut-off events. [2025-01-09 16:38:23,642 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-01-09 16:38:23,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 302 events. 202/302 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 700 event pairs, 124 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 534. Up to 299 conditions per place. [2025-01-09 16:38:23,645 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2025-01-09 16:38:23,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 136 flow [2025-01-09 16:38:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:38:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:38:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-01-09 16:38:23,652 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2025-01-09 16:38:23,653 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 44 transitions. [2025-01-09 16:38:23,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 136 flow [2025-01-09 16:38:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-09 16:38:23,659 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 92 flow [2025-01-09 16:38:23,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2025-01-09 16:38:23,663 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2025-01-09 16:38:23,665 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 92 flow [2025-01-09 16:38:23,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:23,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:23,665 INFO L206 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] [2025-01-09 16:38:23,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:38:23,666 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)] === [2025-01-09 16:38:23,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash -228318064, now seen corresponding path program 1 times [2025-01-09 16:38:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:23,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775680684] [2025-01-09 16:38:23,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:23,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:38:23,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:38:23,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:23,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:23,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:23,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775680684] [2025-01-09 16:38:23,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775680684] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:23,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:23,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:38:23,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071950165] [2025-01-09 16:38:23,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:23,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:38:23,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:23,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:38:23,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:38:23,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:23,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:23,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:23,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:23,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:24,058 INFO L124 PetriNetUnfolderBase]: 306/451 cut-off events. [2025-01-09 16:38:24,058 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-01-09 16:38:24,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 451 events. 306/451 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1253 event pairs, 124 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 900. Up to 302 conditions per place. [2025-01-09 16:38:24,062 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 37 selfloop transitions, 2 changer transitions 2/42 dead transitions. [2025-01-09 16:38:24,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 201 flow [2025-01-09 16:38:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:38:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:38:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-01-09 16:38:24,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2025-01-09 16:38:24,064 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 92 flow. Second operand 3 states and 51 transitions. [2025-01-09 16:38:24,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 201 flow [2025-01-09 16:38:24,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:24,065 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 98 flow [2025-01-09 16:38:24,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2025-01-09 16:38:24,067 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2025-01-09 16:38:24,067 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 98 flow [2025-01-09 16:38:24,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:24,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:24,067 INFO L206 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] [2025-01-09 16:38:24,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:38:24,068 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)] === [2025-01-09 16:38:24,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1399076340, now seen corresponding path program 1 times [2025-01-09 16:38:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:24,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447093746] [2025-01-09 16:38:24,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:24,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 16:38:24,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 16:38:24,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:24,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:24,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:24,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447093746] [2025-01-09 16:38:24,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447093746] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:24,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279852768] [2025-01-09 16:38:24,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:24,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:24,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:24,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:24,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:38:24,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 16:38:24,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 16:38:24,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:24,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:24,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:38:24,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:24,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:24,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279852768] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:24,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:24,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-01-09 16:38:24,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512342880] [2025-01-09 16:38:24,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:24,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:38:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:24,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:38:24,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:38:24,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:24,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2025-01-09 16:38:24,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:24,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:24,556 INFO L124 PetriNetUnfolderBase]: 306/460 cut-off events. [2025-01-09 16:38:24,558 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2025-01-09 16:38:24,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 460 events. 306/460 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1200 event pairs, 202 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 983. Up to 448 conditions per place. [2025-01-09 16:38:24,564 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2025-01-09 16:38:24,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 212 flow [2025-01-09 16:38:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:38:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:38:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2025-01-09 16:38:24,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2025-01-09 16:38:24,567 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 98 flow. Second operand 6 states and 71 transitions. [2025-01-09 16:38:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 212 flow [2025-01-09 16:38:24,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:24,569 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 192 flow [2025-01-09 16:38:24,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2025-01-09 16:38:24,571 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2025-01-09 16:38:24,571 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 192 flow [2025-01-09 16:38:24,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2025-01-09 16:38:24,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:24,571 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:24,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:38:24,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:24,772 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)] === [2025-01-09 16:38:24,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -584646494, now seen corresponding path program 2 times [2025-01-09 16:38:24,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:24,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32861790] [2025-01-09 16:38:24,774 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:24,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:24,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:38:24,816 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 34 statements. [2025-01-09 16:38:24,817 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:24,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-09 16:38:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:24,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32861790] [2025-01-09 16:38:24,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32861790] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:24,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:24,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:38:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934260742] [2025-01-09 16:38:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:24,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:38:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:24,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:38:24,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:38:24,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:24,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:24,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:24,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:24,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:25,138 INFO L124 PetriNetUnfolderBase]: 502/756 cut-off events. [2025-01-09 16:38:25,139 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-01-09 16:38:25,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 756 events. 502/756 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2556 event pairs, 202 based on Foata normal form. 17/625 useless extension candidates. Maximal degree in co-relation 1615. Up to 460 conditions per place. [2025-01-09 16:38:25,142 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 63 selfloop transitions, 3 changer transitions 2/69 dead transitions. [2025-01-09 16:38:25,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 407 flow [2025-01-09 16:38:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:38:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:38:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-01-09 16:38:25,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2025-01-09 16:38:25,143 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 192 flow. Second operand 4 states and 70 transitions. [2025-01-09 16:38:25,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 407 flow [2025-01-09 16:38:25,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 383 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:25,145 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 188 flow [2025-01-09 16:38:25,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2025-01-09 16:38:25,146 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2025-01-09 16:38:25,146 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 188 flow [2025-01-09 16:38:25,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:25,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:25,146 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:25,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:38:25,147 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)] === [2025-01-09 16:38:25,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:25,147 INFO L85 PathProgramCache]: Analyzing trace with hash 977224450, now seen corresponding path program 3 times [2025-01-09 16:38:25,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:25,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8961099] [2025-01-09 16:38:25,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:25,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:25,162 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 3 equivalence classes. [2025-01-09 16:38:25,196 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 34 statements. [2025-01-09 16:38:25,196 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:38:25,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-09 16:38:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8961099] [2025-01-09 16:38:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8961099] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:25,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:25,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:38:25,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723928170] [2025-01-09 16:38:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:25,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:38:25,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:25,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:38:25,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:38:25,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:25,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:25,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:25,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:25,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:25,432 INFO L124 PetriNetUnfolderBase]: 560/838 cut-off events. [2025-01-09 16:38:25,432 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2025-01-09 16:38:25,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 838 events. 560/838 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2971 event pairs, 97 based on Foata normal form. 24/740 useless extension candidates. Maximal degree in co-relation 2160. Up to 567 conditions per place. [2025-01-09 16:38:25,436 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 58 selfloop transitions, 5 changer transitions 1/65 dead transitions. [2025-01-09 16:38:25,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 394 flow [2025-01-09 16:38:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:38:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:38:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2025-01-09 16:38:25,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-09 16:38:25,436 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 188 flow. Second operand 4 states and 62 transitions. [2025-01-09 16:38:25,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 394 flow [2025-01-09 16:38:25,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 65 transitions, 383 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:25,439 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 213 flow [2025-01-09 16:38:25,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2025-01-09 16:38:25,439 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2025-01-09 16:38:25,439 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 213 flow [2025-01-09 16:38:25,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:25,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:25,439 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:25,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:38:25,440 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)] === [2025-01-09 16:38:25,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1224917142, now seen corresponding path program 4 times [2025-01-09 16:38:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:25,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228312692] [2025-01-09 16:38:25,441 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:25,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:25,456 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:38:25,467 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:38:25,467 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:25,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 16:38:25,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:25,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228312692] [2025-01-09 16:38:25,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228312692] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92712044] [2025-01-09 16:38:25,599 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:25,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:25,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:25,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:25,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:38:25,669 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:38:25,728 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:38:25,729 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:25,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:25,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 16:38:25,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 16:38:25,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 16:38:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92712044] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:25,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2025-01-09 16:38:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667491854] [2025-01-09 16:38:25,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:25,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:38:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:25,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:38:25,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:38:25,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:25,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 213 flow. Second operand has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:25,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:25,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:25,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:25,986 INFO L124 PetriNetUnfolderBase]: 560/841 cut-off events. [2025-01-09 16:38:25,987 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2025-01-09 16:38:25,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 841 events. 560/841 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2704 event pairs, 371 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 2277. Up to 825 conditions per place. [2025-01-09 16:38:25,991 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 28 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2025-01-09 16:38:25,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 323 flow [2025-01-09 16:38:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2025-01-09 16:38:25,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2025-01-09 16:38:25,992 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 213 flow. Second operand 7 states and 72 transitions. [2025-01-09 16:38:25,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 323 flow [2025-01-09 16:38:25,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:25,994 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 278 flow [2025-01-09 16:38:25,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2025-01-09 16:38:25,995 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2025-01-09 16:38:25,995 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 278 flow [2025-01-09 16:38:25,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:25,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:25,995 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:26,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:26,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:26,196 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)] === [2025-01-09 16:38:26,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:26,197 INFO L85 PathProgramCache]: Analyzing trace with hash 347833796, now seen corresponding path program 5 times [2025-01-09 16:38:26,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:26,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293491137] [2025-01-09 16:38:26,197 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:26,210 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-01-09 16:38:26,239 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:38:26,240 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 16:38:26,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:26,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:26,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293491137] [2025-01-09 16:38:26,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293491137] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:26,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:26,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:38:26,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395209069] [2025-01-09 16:38:26,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:26,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:38:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:26,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:38:26,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:38:26,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:26,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:26,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:26,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:26,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:26,585 INFO L124 PetriNetUnfolderBase]: 477/715 cut-off events. [2025-01-09 16:38:26,586 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2025-01-09 16:38:26,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 715 events. 477/715 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2320 event pairs, 178 based on Foata normal form. 24/636 useless extension candidates. Maximal degree in co-relation 1935. Up to 487 conditions per place. [2025-01-09 16:38:26,589 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 61 selfloop transitions, 6 changer transitions 2/70 dead transitions. [2025-01-09 16:38:26,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 484 flow [2025-01-09 16:38:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:38:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:38:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2025-01-09 16:38:26,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2025-01-09 16:38:26,590 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 278 flow. Second operand 4 states and 66 transitions. [2025-01-09 16:38:26,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 484 flow [2025-01-09 16:38:26,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 448 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:26,594 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 263 flow [2025-01-09 16:38:26,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2025-01-09 16:38:26,594 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2025-01-09 16:38:26,596 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 263 flow [2025-01-09 16:38:26,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:26,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:26,597 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:26,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:38:26,597 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)] === [2025-01-09 16:38:26,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1085835548, now seen corresponding path program 1 times [2025-01-09 16:38:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:26,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195518289] [2025-01-09 16:38:26,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:26,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 16:38:26,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:38:26,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:26,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195518289] [2025-01-09 16:38:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195518289] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:26,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:26,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:38:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824321873] [2025-01-09 16:38:26,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:26,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:26,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:26,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:38:26,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:26,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:26,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:27,160 INFO L124 PetriNetUnfolderBase]: 790/1173 cut-off events. [2025-01-09 16:38:27,160 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2025-01-09 16:38:27,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 1173 events. 790/1173 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4350 event pairs, 255 based on Foata normal form. 12/989 useless extension candidates. Maximal degree in co-relation 3416. Up to 684 conditions per place. [2025-01-09 16:38:27,168 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 71 selfloop transitions, 4 changer transitions 13/89 dead transitions. [2025-01-09 16:38:27,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 616 flow [2025-01-09 16:38:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-01-09 16:38:27,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2025-01-09 16:38:27,169 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 263 flow. Second operand 5 states and 80 transitions. [2025-01-09 16:38:27,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 616 flow [2025-01-09 16:38:27,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 89 transitions, 576 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-01-09 16:38:27,174 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 272 flow [2025-01-09 16:38:27,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2025-01-09 16:38:27,175 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2025-01-09 16:38:27,176 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 272 flow [2025-01-09 16:38:27,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:27,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:27,176 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:27,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 16:38:27,177 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)] === [2025-01-09 16:38:27,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2139286476, now seen corresponding path program 2 times [2025-01-09 16:38:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:27,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894067304] [2025-01-09 16:38:27,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:27,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:27,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 16:38:27,231 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:38:27,232 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:27,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:27,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:27,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894067304] [2025-01-09 16:38:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894067304] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:27,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225815383] [2025-01-09 16:38:27,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:27,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:27,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:27,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:38:27,517 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 16:38:27,556 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:38:27,557 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:27,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:27,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:38:27,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:27,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:27,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225815383] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:27,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:27,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-01-09 16:38:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062999082] [2025-01-09 16:38:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:27,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:27,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:27,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:27,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:38:27,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:27,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:27,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:27,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:27,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:27,862 INFO L124 PetriNetUnfolderBase]: 810/1190 cut-off events. [2025-01-09 16:38:27,862 INFO L125 PetriNetUnfolderBase]: For 1765/1765 co-relation queries the response was YES. [2025-01-09 16:38:27,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3846 conditions, 1190 events. 810/1190 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4204 event pairs, 119 based on Foata normal form. 22/1081 useless extension candidates. Maximal degree in co-relation 3745. Up to 458 conditions per place. [2025-01-09 16:38:27,867 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 83 selfloop transitions, 7 changer transitions 3/94 dead transitions. [2025-01-09 16:38:27,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 673 flow [2025-01-09 16:38:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-01-09 16:38:27,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2025-01-09 16:38:27,869 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 272 flow. Second operand 5 states and 76 transitions. [2025-01-09 16:38:27,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 673 flow [2025-01-09 16:38:27,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 653 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-01-09 16:38:27,872 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 315 flow [2025-01-09 16:38:27,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2025-01-09 16:38:27,873 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2025-01-09 16:38:27,873 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 315 flow [2025-01-09 16:38:27,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:27,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:27,873 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:27,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:28,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:28,077 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)] === [2025-01-09 16:38:28,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 921856644, now seen corresponding path program 3 times [2025-01-09 16:38:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161397058] [2025-01-09 16:38:28,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:28,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:28,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 4 equivalence classes. [2025-01-09 16:38:28,106 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 38 statements. [2025-01-09 16:38:28,106 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:28,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:28,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161397058] [2025-01-09 16:38:28,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161397058] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:28,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:28,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:38:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770182208] [2025-01-09 16:38:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:28,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:28,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:28,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:28,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:38:28,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:28,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:28,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:28,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:28,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:28,541 INFO L124 PetriNetUnfolderBase]: 1006/1482 cut-off events. [2025-01-09 16:38:28,541 INFO L125 PetriNetUnfolderBase]: For 2650/2650 co-relation queries the response was YES. [2025-01-09 16:38:28,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 1482 events. 1006/1482 cut-off events. For 2650/2650 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5719 event pairs, 273 based on Foata normal form. 24/1359 useless extension candidates. Maximal degree in co-relation 4782. Up to 750 conditions per place. [2025-01-09 16:38:28,548 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 82 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2025-01-09 16:38:28,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 663 flow [2025-01-09 16:38:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-01-09 16:38:28,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2025-01-09 16:38:28,551 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 315 flow. Second operand 5 states and 80 transitions. [2025-01-09 16:38:28,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 663 flow [2025-01-09 16:38:28,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 654 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:38:28,555 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 365 flow [2025-01-09 16:38:28,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2025-01-09 16:38:28,555 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2025-01-09 16:38:28,556 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 365 flow [2025-01-09 16:38:28,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:28,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:28,556 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:28,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 16:38:28,556 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)] === [2025-01-09 16:38:28,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1314562158, now seen corresponding path program 4 times [2025-01-09 16:38:28,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:28,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141028127] [2025-01-09 16:38:28,557 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:28,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:28,568 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-09 16:38:28,585 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:38:28,586 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:28,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:28,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:28,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141028127] [2025-01-09 16:38:28,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141028127] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:28,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:28,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:38:28,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267302108] [2025-01-09 16:38:28,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:28,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:28,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:28,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:28,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:38:28,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:28,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:28,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:28,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:28,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:29,042 INFO L124 PetriNetUnfolderBase]: 994/1470 cut-off events. [2025-01-09 16:38:29,042 INFO L125 PetriNetUnfolderBase]: For 3944/3944 co-relation queries the response was YES. [2025-01-09 16:38:29,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5449 conditions, 1470 events. 994/1470 cut-off events. For 3944/3944 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5620 event pairs, 334 based on Foata normal form. 12/1335 useless extension candidates. Maximal degree in co-relation 5343. Up to 970 conditions per place. [2025-01-09 16:38:29,049 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 72 selfloop transitions, 7 changer transitions 15/95 dead transitions. [2025-01-09 16:38:29,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 95 transitions, 755 flow [2025-01-09 16:38:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-01-09 16:38:29,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2025-01-09 16:38:29,050 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 365 flow. Second operand 5 states and 76 transitions. [2025-01-09 16:38:29,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 95 transitions, 755 flow [2025-01-09 16:38:29,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 736 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:29,056 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 425 flow [2025-01-09 16:38:29,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2025-01-09 16:38:29,057 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2025-01-09 16:38:29,057 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 425 flow [2025-01-09 16:38:29,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:29,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:29,057 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:29,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 16:38:29,058 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:38:29,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1525424998, now seen corresponding path program 5 times [2025-01-09 16:38:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039261343] [2025-01-09 16:38:29,058 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:29,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:29,069 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-01-09 16:38:29,087 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:38:29,087 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 16:38:29,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:29,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:29,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039261343] [2025-01-09 16:38:29,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039261343] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:29,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206742542] [2025-01-09 16:38:29,266 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:29,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:29,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:29,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:29,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:38:29,355 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-01-09 16:38:29,774 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:38:29,774 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 16:38:29,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:29,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:38:29,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:29,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:30,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206742542] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:30,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:30,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-01-09 16:38:30,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740017553] [2025-01-09 16:38:30,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:30,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:30,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:30,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:38:30,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:30,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:30,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:30,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:30,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:30,322 INFO L124 PetriNetUnfolderBase]: 906/1330 cut-off events. [2025-01-09 16:38:30,322 INFO L125 PetriNetUnfolderBase]: For 3857/3857 co-relation queries the response was YES. [2025-01-09 16:38:30,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5046 conditions, 1330 events. 906/1330 cut-off events. For 3857/3857 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4899 event pairs, 247 based on Foata normal form. 22/1213 useless extension candidates. Maximal degree in co-relation 4938. Up to 750 conditions per place. [2025-01-09 16:38:30,329 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 77 selfloop transitions, 13 changer transitions 4/95 dead transitions. [2025-01-09 16:38:30,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 760 flow [2025-01-09 16:38:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2025-01-09 16:38:30,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2025-01-09 16:38:30,331 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 425 flow. Second operand 5 states and 81 transitions. [2025-01-09 16:38:30,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 760 flow [2025-01-09 16:38:30,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 736 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-01-09 16:38:30,338 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 441 flow [2025-01-09 16:38:30,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2025-01-09 16:38:30,340 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2025-01-09 16:38:30,340 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 441 flow [2025-01-09 16:38:30,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:30,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:30,341 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:30,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 16:38:30,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 16:38:30,542 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:38:30,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2120935962, now seen corresponding path program 6 times [2025-01-09 16:38:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:30,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596872994] [2025-01-09 16:38:30,543 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:30,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:30,558 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-01-09 16:38:30,587 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 32 of 38 statements. [2025-01-09 16:38:30,587 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:38:30,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596872994] [2025-01-09 16:38:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596872994] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657331937] [2025-01-09 16:38:30,702 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:30,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:30,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:30,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:30,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:38:30,785 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-01-09 16:38:30,819 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 32 of 38 statements. [2025-01-09 16:38:30,820 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:38:30,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:30,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:38:30,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:30,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-01-09 16:38:30,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657331937] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:30,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:30,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2025-01-09 16:38:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847424812] [2025-01-09 16:38:30,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:30,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:30,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:30,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:30,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:30,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:30,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:30,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:30,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:31,167 INFO L124 PetriNetUnfolderBase]: 860/1254 cut-off events. [2025-01-09 16:38:31,167 INFO L125 PetriNetUnfolderBase]: For 4107/4107 co-relation queries the response was YES. [2025-01-09 16:38:31,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 1254 events. 860/1254 cut-off events. For 4107/4107 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4466 event pairs, 107 based on Foata normal form. 22/1141 useless extension candidates. Maximal degree in co-relation 4689. Up to 707 conditions per place. [2025-01-09 16:38:31,173 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 77 selfloop transitions, 14 changer transitions 1/93 dead transitions. [2025-01-09 16:38:31,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 773 flow [2025-01-09 16:38:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-01-09 16:38:31,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2025-01-09 16:38:31,174 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 441 flow. Second operand 5 states and 72 transitions. [2025-01-09 16:38:31,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 773 flow [2025-01-09 16:38:31,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 739 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:31,181 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 463 flow [2025-01-09 16:38:31,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2025-01-09 16:38:31,181 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2025-01-09 16:38:31,182 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 463 flow [2025-01-09 16:38:31,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:31,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:31,182 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:31,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 16:38:31,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 16:38:31,383 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:38:31,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 457462467, now seen corresponding path program 1 times [2025-01-09 16:38:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823420149] [2025-01-09 16:38:31,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:31,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 16:38:31,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:31,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:31,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:32,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:32,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823420149] [2025-01-09 16:38:32,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823420149] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:32,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277641275] [2025-01-09 16:38:32,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:32,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:32,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:32,167 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:32,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:38:32,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 16:38:32,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:32,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:32,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:32,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 16:38:32,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:32,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:32,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2025-01-09 16:38:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:32,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:32,920 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2025-01-09 16:38:32,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2025-01-09 16:38:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277641275] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:33,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 30 [2025-01-09 16:38:33,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32209691] [2025-01-09 16:38:33,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:33,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 16:38:33,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:33,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 16:38:33,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2025-01-09 16:38:33,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:33,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 463 flow. Second operand has 30 states, 30 states have (on average 6.233333333333333) internal successors, (187), 30 states have internal predecessors, (187), 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) [2025-01-09 16:38:33,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:33,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:33,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:34,611 INFO L124 PetriNetUnfolderBase]: 1968/2865 cut-off events. [2025-01-09 16:38:34,611 INFO L125 PetriNetUnfolderBase]: For 7614/7614 co-relation queries the response was YES. [2025-01-09 16:38:34,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 2865 events. 1968/2865 cut-off events. For 7614/7614 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12786 event pairs, 157 based on Foata normal form. 1/2445 useless extension candidates. Maximal degree in co-relation 10455. Up to 929 conditions per place. [2025-01-09 16:38:34,632 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 154 selfloop transitions, 82 changer transitions 14/251 dead transitions. [2025-01-09 16:38:34,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 251 transitions, 2036 flow [2025-01-09 16:38:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 16:38:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-09 16:38:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 252 transitions. [2025-01-09 16:38:34,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2025-01-09 16:38:34,633 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 463 flow. Second operand 20 states and 252 transitions. [2025-01-09 16:38:34,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 251 transitions, 2036 flow [2025-01-09 16:38:34,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 251 transitions, 1946 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:34,648 INFO L231 Difference]: Finished difference. Result has 91 places, 144 transitions, 1332 flow [2025-01-09 16:38:34,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1332, PETRI_PLACES=91, PETRI_TRANSITIONS=144} [2025-01-09 16:38:34,649 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2025-01-09 16:38:34,649 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 144 transitions, 1332 flow [2025-01-09 16:38:34,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.233333333333333) internal successors, (187), 30 states have internal predecessors, (187), 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) [2025-01-09 16:38:34,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:34,649 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:34,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:34,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 16:38:34,850 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:38:34,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 762477179, now seen corresponding path program 2 times [2025-01-09 16:38:34,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238881325] [2025-01-09 16:38:34,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:34,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:34,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:38:34,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:34,911 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:34,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:35,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238881325] [2025-01-09 16:38:35,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238881325] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672928579] [2025-01-09 16:38:35,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:35,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:35,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:35,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 16:38:35,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:38:35,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:35,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:35,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:35,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:38:35,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:35,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:35,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2025-01-09 16:38:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:35,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:36,299 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2025-01-09 16:38:36,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2025-01-09 16:38:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672928579] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:36,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:36,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2025-01-09 16:38:36,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654654354] [2025-01-09 16:38:36,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:36,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 16:38:36,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:36,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 16:38:36,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2025-01-09 16:38:36,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:36,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 144 transitions, 1332 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:36,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:36,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:36,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:37,717 INFO L124 PetriNetUnfolderBase]: 2252/3275 cut-off events. [2025-01-09 16:38:37,717 INFO L125 PetriNetUnfolderBase]: For 12866/12866 co-relation queries the response was YES. [2025-01-09 16:38:37,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14675 conditions, 3275 events. 2252/3275 cut-off events. For 12866/12866 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 15001 event pairs, 217 based on Foata normal form. 1/3238 useless extension candidates. Maximal degree in co-relation 14557. Up to 1025 conditions per place. [2025-01-09 16:38:37,735 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 95 changer transitions 53/303 dead transitions. [2025-01-09 16:38:37,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 303 transitions, 2905 flow [2025-01-09 16:38:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 16:38:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-09 16:38:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 262 transitions. [2025-01-09 16:38:37,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.402457757296467 [2025-01-09 16:38:37,737 INFO L175 Difference]: Start difference. First operand has 91 places, 144 transitions, 1332 flow. Second operand 21 states and 262 transitions. [2025-01-09 16:38:37,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 303 transitions, 2905 flow [2025-01-09 16:38:37,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 303 transitions, 2840 flow, removed 31 selfloop flow, removed 2 redundant places. [2025-01-09 16:38:37,768 INFO L231 Difference]: Finished difference. Result has 117 places, 165 transitions, 1740 flow [2025-01-09 16:38:37,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1740, PETRI_PLACES=117, PETRI_TRANSITIONS=165} [2025-01-09 16:38:37,769 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2025-01-09 16:38:37,769 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 165 transitions, 1740 flow [2025-01-09 16:38:37,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:37,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:37,769 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:37,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:37,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:37,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:38:37,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash -526123055, now seen corresponding path program 3 times [2025-01-09 16:38:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:37,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333190037] [2025-01-09 16:38:37,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:37,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:37,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:38:37,999 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 39 statements. [2025-01-09 16:38:37,999 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:37,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:38,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333190037] [2025-01-09 16:38:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333190037] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020874064] [2025-01-09 16:38:38,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:38,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:38,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:38,597 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:38,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 16:38:38,685 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:38:38,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 39 statements. [2025-01-09 16:38:38,720 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:38,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:38,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:38:38,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:38,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:38,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2025-01-09 16:38:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:39,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:39,341 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2025-01-09 16:38:39,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2025-01-09 16:38:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020874064] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:39,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:39,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2025-01-09 16:38:39,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875692799] [2025-01-09 16:38:39,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:39,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 16:38:39,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:39,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 16:38:39,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2025-01-09 16:38:39,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:39,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 165 transitions, 1740 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:39,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:39,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:40,769 INFO L124 PetriNetUnfolderBase]: 1990/2893 cut-off events. [2025-01-09 16:38:40,769 INFO L125 PetriNetUnfolderBase]: For 21139/21139 co-relation queries the response was YES. [2025-01-09 16:38:40,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16779 conditions, 2893 events. 1990/2893 cut-off events. For 21139/21139 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12802 event pairs, 284 based on Foata normal form. 1/2894 useless extension candidates. Maximal degree in co-relation 16653. Up to 1056 conditions per place. [2025-01-09 16:38:40,784 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 88 changer transitions 3/246 dead transitions. [2025-01-09 16:38:40,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 246 transitions, 2767 flow [2025-01-09 16:38:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:38:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:38:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 192 transitions. [2025-01-09 16:38:40,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2025-01-09 16:38:40,786 INFO L175 Difference]: Start difference. First operand has 117 places, 165 transitions, 1740 flow. Second operand 16 states and 192 transitions. [2025-01-09 16:38:40,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 246 transitions, 2767 flow [2025-01-09 16:38:40,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 246 transitions, 2638 flow, removed 27 selfloop flow, removed 9 redundant places. [2025-01-09 16:38:40,831 INFO L231 Difference]: Finished difference. Result has 121 places, 168 transitions, 1826 flow [2025-01-09 16:38:40,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1826, PETRI_PLACES=121, PETRI_TRANSITIONS=168} [2025-01-09 16:38:40,832 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2025-01-09 16:38:40,832 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 168 transitions, 1826 flow [2025-01-09 16:38:40,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:40,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:40,833 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:40,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 16:38:41,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 16:38:41,033 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:38:41,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1929629479, now seen corresponding path program 4 times [2025-01-09 16:38:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511742265] [2025-01-09 16:38:41,035 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:41,046 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:38:41,083 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:41,083 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:41,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:41,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:41,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511742265] [2025-01-09 16:38:41,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511742265] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:41,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903530724] [2025-01-09 16:38:41,741 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:41,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:41,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:41,746 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:41,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 16:38:41,838 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:38:41,873 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:41,873 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:41,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:41,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 16:38:41,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:42,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:42,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2025-01-09 16:38:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:42,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:42,371 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2025-01-09 16:38:42,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2025-01-09 16:38:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903530724] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:42,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 28 [2025-01-09 16:38:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886973727] [2025-01-09 16:38:42,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:42,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 16:38:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:42,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 16:38:42,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2025-01-09 16:38:42,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:38:42,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 168 transitions, 1826 flow. Second operand has 28 states, 28 states have (on average 6.107142857142857) internal successors, (171), 28 states have internal predecessors, (171), 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) [2025-01-09 16:38:42,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:42,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:38:42,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:46,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-01-09 16:38:50,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-01-09 16:38:51,852 INFO L124 PetriNetUnfolderBase]: 2004/2919 cut-off events. [2025-01-09 16:38:51,852 INFO L125 PetriNetUnfolderBase]: For 23591/23591 co-relation queries the response was YES. [2025-01-09 16:38:51,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17511 conditions, 2919 events. 2004/2919 cut-off events. For 23591/23591 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 13006 event pairs, 272 based on Foata normal form. 1/2909 useless extension candidates. Maximal degree in co-relation 17384. Up to 1031 conditions per place. [2025-01-09 16:38:51,870 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 156 selfloop transitions, 98 changer transitions 3/258 dead transitions. [2025-01-09 16:38:51,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 258 transitions, 2924 flow [2025-01-09 16:38:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 16:38:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-09 16:38:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 225 transitions. [2025-01-09 16:38:51,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38200339558573854 [2025-01-09 16:38:51,876 INFO L175 Difference]: Start difference. First operand has 121 places, 168 transitions, 1826 flow. Second operand 19 states and 225 transitions. [2025-01-09 16:38:51,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 258 transitions, 2924 flow [2025-01-09 16:38:51,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 258 transitions, 2781 flow, removed 6 selfloop flow, removed 12 redundant places. [2025-01-09 16:38:51,925 INFO L231 Difference]: Finished difference. Result has 128 places, 170 transitions, 1910 flow [2025-01-09 16:38:51,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1910, PETRI_PLACES=128, PETRI_TRANSITIONS=170} [2025-01-09 16:38:51,925 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2025-01-09 16:38:51,925 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 170 transitions, 1910 flow [2025-01-09 16:38:51,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.107142857142857) internal successors, (171), 28 states have internal predecessors, (171), 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) [2025-01-09 16:38:51,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:51,926 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:51,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 16:38:52,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:52,126 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:38:52,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1608239871, now seen corresponding path program 5 times [2025-01-09 16:38:52,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:52,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851341191] [2025-01-09 16:38:52,127 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:52,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:52,138 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:38:52,179 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:52,180 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 16:38:52,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 16:38:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851341191] [2025-01-09 16:38:53,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851341191] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540823066] [2025-01-09 16:38:53,078 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:53,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:53,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:53,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:53,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 16:38:53,184 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:38:53,583 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:38:53,583 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 16:38:53,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:53,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 16:38:53,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:53,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:53,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2025-01-09 16:38:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:38:54,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:54,531 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2025-01-09 16:38:54,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 212 [2025-01-09 16:39:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540823066] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:00,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 9] total 33 [2025-01-09 16:39:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533713321] [2025-01-09 16:39:00,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:00,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-09 16:39:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:00,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-09 16:39:00,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 16:39:00,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:39:00,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 170 transitions, 1910 flow. Second operand has 33 states, 33 states have (on average 6.303030303030303) internal successors, (208), 33 states have internal predecessors, (208), 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) [2025-01-09 16:39:00,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:00,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:39:00,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:04,182 INFO L124 PetriNetUnfolderBase]: 3284/4756 cut-off events. [2025-01-09 16:39:04,182 INFO L125 PetriNetUnfolderBase]: For 41761/41761 co-relation queries the response was YES. [2025-01-09 16:39:04,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29028 conditions, 4756 events. 3284/4756 cut-off events. For 41761/41761 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 23051 event pairs, 315 based on Foata normal form. 2/4758 useless extension candidates. Maximal degree in co-relation 28900. Up to 2488 conditions per place. [2025-01-09 16:39:04,211 INFO L140 encePairwiseOnDemand]: 14/31 looper letters, 238 selfloop transitions, 196 changer transitions 48/483 dead transitions. [2025-01-09 16:39:04,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 483 transitions, 5659 flow [2025-01-09 16:39:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-09 16:39:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-01-09 16:39:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 438 transitions. [2025-01-09 16:39:04,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37181663837011886 [2025-01-09 16:39:04,213 INFO L175 Difference]: Start difference. First operand has 128 places, 170 transitions, 1910 flow. Second operand 38 states and 438 transitions. [2025-01-09 16:39:04,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 483 transitions, 5659 flow [2025-01-09 16:39:04,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 483 transitions, 5432 flow, removed 1 selfloop flow, removed 16 redundant places. [2025-01-09 16:39:04,293 INFO L231 Difference]: Finished difference. Result has 160 places, 281 transitions, 3656 flow [2025-01-09 16:39:04,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3656, PETRI_PLACES=160, PETRI_TRANSITIONS=281} [2025-01-09 16:39:04,294 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2025-01-09 16:39:04,294 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 281 transitions, 3656 flow [2025-01-09 16:39:04,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.303030303030303) internal successors, (208), 33 states have internal predecessors, (208), 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) [2025-01-09 16:39:04,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:04,294 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:04,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 16:39:04,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 16:39:04,498 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:39:04,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1497480413, now seen corresponding path program 6 times [2025-01-09 16:39:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:04,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321636906] [2025-01-09 16:39:04,498 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:39:04,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:04,511 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:04,529 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 39 statements. [2025-01-09 16:39:04,529 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:39:04,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:05,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:05,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321636906] [2025-01-09 16:39:05,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321636906] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:05,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241910340] [2025-01-09 16:39:05,345 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:39:05,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:05,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:05,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:05,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 16:39:05,471 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:05,534 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 39 statements. [2025-01-09 16:39:05,535 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:39:05,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:05,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:39:05,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:05,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:39:05,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2025-01-09 16:39:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:06,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:06,416 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2025-01-09 16:39:06,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2025-01-09 16:39:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241910340] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:06,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:06,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2025-01-09 16:39:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082095972] [2025-01-09 16:39:06,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:06,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 16:39:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:06,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 16:39:06,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2025-01-09 16:39:06,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:39:06,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 281 transitions, 3656 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:06,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:06,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:39:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:08,225 INFO L124 PetriNetUnfolderBase]: 2889/4192 cut-off events. [2025-01-09 16:39:08,225 INFO L125 PetriNetUnfolderBase]: For 41456/41456 co-relation queries the response was YES. [2025-01-09 16:39:08,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28421 conditions, 4192 events. 2889/4192 cut-off events. For 41456/41456 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 19949 event pairs, 436 based on Foata normal form. 1/4193 useless extension candidates. Maximal degree in co-relation 28278. Up to 1940 conditions per place. [2025-01-09 16:39:08,252 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 138 changer transitions 1/377 dead transitions. [2025-01-09 16:39:08,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 377 transitions, 5093 flow [2025-01-09 16:39:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 16:39:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-09 16:39:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 243 transitions. [2025-01-09 16:39:08,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2025-01-09 16:39:08,253 INFO L175 Difference]: Start difference. First operand has 160 places, 281 transitions, 3656 flow. Second operand 21 states and 243 transitions. [2025-01-09 16:39:08,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 377 transitions, 5093 flow [2025-01-09 16:39:08,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 377 transitions, 4535 flow, removed 209 selfloop flow, removed 12 redundant places. [2025-01-09 16:39:08,425 INFO L231 Difference]: Finished difference. Result has 170 places, 290 transitions, 3563 flow [2025-01-09 16:39:08,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3144, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3563, PETRI_PLACES=170, PETRI_TRANSITIONS=290} [2025-01-09 16:39:08,426 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2025-01-09 16:39:08,426 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 290 transitions, 3563 flow [2025-01-09 16:39:08,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:08,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:08,426 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:08,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 16:39:08,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:08,630 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:39:08,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:08,631 INFO L85 PathProgramCache]: Analyzing trace with hash -438735365, now seen corresponding path program 7 times [2025-01-09 16:39:08,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:08,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442581751] [2025-01-09 16:39:08,631 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:39:08,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:08,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 16:39:08,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:08,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:39:08,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:09,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:09,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442581751] [2025-01-09 16:39:09,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442581751] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:09,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634557314] [2025-01-09 16:39:09,479 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:39:09,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:09,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:09,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:09,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 16:39:09,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 16:39:09,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:09,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:39:09,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:09,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 16:39:09,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:09,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:39:09,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2025-01-09 16:39:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:09,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:10,320 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2025-01-09 16:39:10,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2025-01-09 16:39:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:10,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634557314] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:10,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:10,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 30 [2025-01-09 16:39:10,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151522030] [2025-01-09 16:39:10,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:10,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 16:39:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:10,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 16:39:10,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2025-01-09 16:39:10,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:39:10,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 290 transitions, 3563 flow. Second operand has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:10,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:10,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:39:10,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:13,294 INFO L124 PetriNetUnfolderBase]: 3152/4586 cut-off events. [2025-01-09 16:39:13,294 INFO L125 PetriNetUnfolderBase]: For 35666/35666 co-relation queries the response was YES. [2025-01-09 16:39:13,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28788 conditions, 4586 events. 3152/4586 cut-off events. For 35666/35666 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 22304 event pairs, 327 based on Foata normal form. 1/4576 useless extension candidates. Maximal degree in co-relation 28647. Up to 1665 conditions per place. [2025-01-09 16:39:13,319 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 178 changer transitions 1/446 dead transitions. [2025-01-09 16:39:13,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 446 transitions, 5550 flow [2025-01-09 16:39:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-09 16:39:13,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-01-09 16:39:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 373 transitions. [2025-01-09 16:39:13,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.364613880742913 [2025-01-09 16:39:13,324 INFO L175 Difference]: Start difference. First operand has 170 places, 290 transitions, 3563 flow. Second operand 33 states and 373 transitions. [2025-01-09 16:39:13,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 446 transitions, 5550 flow [2025-01-09 16:39:13,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 446 transitions, 5304 flow, removed 23 selfloop flow, removed 13 redundant places. [2025-01-09 16:39:13,423 INFO L231 Difference]: Finished difference. Result has 197 places, 313 transitions, 4064 flow [2025-01-09 16:39:13,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4064, PETRI_PLACES=197, PETRI_TRANSITIONS=313} [2025-01-09 16:39:13,423 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2025-01-09 16:39:13,423 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 313 transitions, 4064 flow [2025-01-09 16:39:13,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:13,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:13,424 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:13,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 16:39:13,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:13,628 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:39:13,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1977295369, now seen corresponding path program 8 times [2025-01-09 16:39:13,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:13,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444389008] [2025-01-09 16:39:13,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:39:13,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:13,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:39:13,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:13,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:39:13,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:14,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:14,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444389008] [2025-01-09 16:39:14,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444389008] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:14,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529823787] [2025-01-09 16:39:14,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:39:14,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:14,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:14,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:14,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 16:39:14,610 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:39:14,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:14,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:39:14,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:14,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:39:14,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:15,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:39:15,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2025-01-09 16:39:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:15,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:15,536 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2025-01-09 16:39:15,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2025-01-09 16:39:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:15,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529823787] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:15,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:15,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2025-01-09 16:39:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007943595] [2025-01-09 16:39:15,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:15,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 16:39:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:15,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 16:39:15,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2025-01-09 16:39:15,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:39:15,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 313 transitions, 4064 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:15,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:15,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:39:15,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:17,722 INFO L124 PetriNetUnfolderBase]: 3168/4613 cut-off events. [2025-01-09 16:39:17,722 INFO L125 PetriNetUnfolderBase]: For 50522/50522 co-relation queries the response was YES. [2025-01-09 16:39:17,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31853 conditions, 4613 events. 3168/4613 cut-off events. For 50522/50522 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 22505 event pairs, 503 based on Foata normal form. 2/4604 useless extension candidates. Maximal degree in co-relation 31704. Up to 2240 conditions per place. [2025-01-09 16:39:17,756 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 255 selfloop transitions, 133 changer transitions 2/391 dead transitions. [2025-01-09 16:39:17,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 391 transitions, 5482 flow [2025-01-09 16:39:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:39:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:39:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 201 transitions. [2025-01-09 16:39:17,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38140417457305503 [2025-01-09 16:39:17,757 INFO L175 Difference]: Start difference. First operand has 197 places, 313 transitions, 4064 flow. Second operand 17 states and 201 transitions. [2025-01-09 16:39:17,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 391 transitions, 5482 flow [2025-01-09 16:39:17,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 391 transitions, 5153 flow, removed 44 selfloop flow, removed 22 redundant places. [2025-01-09 16:39:17,899 INFO L231 Difference]: Finished difference. Result has 193 places, 318 transitions, 4110 flow [2025-01-09 16:39:17,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4110, PETRI_PLACES=193, PETRI_TRANSITIONS=318} [2025-01-09 16:39:17,900 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2025-01-09 16:39:17,900 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 318 transitions, 4110 flow [2025-01-09 16:39:17,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:17,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:17,900 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:17,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 16:39:18,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:18,101 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:39:18,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1655909339, now seen corresponding path program 9 times [2025-01-09 16:39:18,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:18,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779230153] [2025-01-09 16:39:18,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:39:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:18,116 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:18,131 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 39 statements. [2025-01-09 16:39:18,131 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:39:18,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:18,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779230153] [2025-01-09 16:39:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779230153] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884261216] [2025-01-09 16:39:18,848 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:39:18,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:18,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:18,854 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:18,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 16:39:18,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:19,006 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 39 statements. [2025-01-09 16:39:19,006 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:39:19,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:19,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:39:19,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:19,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:39:19,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2025-01-09 16:39:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:19,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:19,876 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2025-01-09 16:39:19,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2025-01-09 16:39:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884261216] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:25,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:25,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 28 [2025-01-09 16:39:25,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425113846] [2025-01-09 16:39:25,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:25,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 16:39:25,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:25,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 16:39:25,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2025-01-09 16:39:25,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:39:25,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 318 transitions, 4110 flow. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:25,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:25,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:39:25,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:27,211 INFO L124 PetriNetUnfolderBase]: 3709/5479 cut-off events. [2025-01-09 16:39:27,211 INFO L125 PetriNetUnfolderBase]: For 64432/64432 co-relation queries the response was YES. [2025-01-09 16:39:27,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37957 conditions, 5479 events. 3709/5479 cut-off events. For 64432/64432 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 28331 event pairs, 636 based on Foata normal form. 3/5471 useless extension candidates. Maximal degree in co-relation 37807. Up to 3938 conditions per place. [2025-01-09 16:39:27,251 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 335 selfloop transitions, 158 changer transitions 4/498 dead transitions. [2025-01-09 16:39:27,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 498 transitions, 6882 flow [2025-01-09 16:39:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 16:39:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-01-09 16:39:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 264 transitions. [2025-01-09 16:39:27,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3702664796633941 [2025-01-09 16:39:27,255 INFO L175 Difference]: Start difference. First operand has 193 places, 318 transitions, 4110 flow. Second operand 23 states and 264 transitions. [2025-01-09 16:39:27,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 498 transitions, 6882 flow [2025-01-09 16:39:27,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 498 transitions, 6598 flow, removed 20 selfloop flow, removed 13 redundant places. [2025-01-09 16:39:27,496 INFO L231 Difference]: Finished difference. Result has 212 places, 383 transitions, 5303 flow [2025-01-09 16:39:27,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3888, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5303, PETRI_PLACES=212, PETRI_TRANSITIONS=383} [2025-01-09 16:39:27,497 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2025-01-09 16:39:27,497 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 383 transitions, 5303 flow [2025-01-09 16:39:27,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:27,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:27,497 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:27,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 16:39:27,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-01-09 16:39:27,698 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:39:27,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash 676854101, now seen corresponding path program 10 times [2025-01-09 16:39:27,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:27,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330596750] [2025-01-09 16:39:27,699 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:39:27,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:27,709 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:39:27,751 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:27,751 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:39:27,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330596750] [2025-01-09 16:39:28,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330596750] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893307427] [2025-01-09 16:39:28,482 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:39:28,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:28,484 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:28,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 16:39:28,596 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:39:28,629 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:28,629 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:39:28,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:28,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 16:39:28,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:28,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:39:28,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2025-01-09 16:39:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:28,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:29,389 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2025-01-09 16:39:29,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2025-01-09 16:39:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893307427] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:35,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:35,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 27 [2025-01-09 16:39:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508372587] [2025-01-09 16:39:35,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:35,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 16:39:35,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:35,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 16:39:35,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2025-01-09 16:39:35,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:39:35,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 383 transitions, 5303 flow. Second operand has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 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) [2025-01-09 16:39:35,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:35,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:39:35,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:38,234 INFO L124 PetriNetUnfolderBase]: 4468/6632 cut-off events. [2025-01-09 16:39:38,234 INFO L125 PetriNetUnfolderBase]: For 104278/104278 co-relation queries the response was YES. [2025-01-09 16:39:38,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49495 conditions, 6632 events. 4468/6632 cut-off events. For 104278/104278 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 35824 event pairs, 743 based on Foata normal form. 2/6623 useless extension candidates. Maximal degree in co-relation 49335. Up to 4460 conditions per place. [2025-01-09 16:39:38,293 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 351 selfloop transitions, 183 changer transitions 2/537 dead transitions. [2025-01-09 16:39:38,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 537 transitions, 8101 flow [2025-01-09 16:39:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 16:39:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-09 16:39:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 233 transitions. [2025-01-09 16:39:38,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3758064516129032 [2025-01-09 16:39:38,295 INFO L175 Difference]: Start difference. First operand has 212 places, 383 transitions, 5303 flow. Second operand 20 states and 233 transitions. [2025-01-09 16:39:38,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 537 transitions, 8101 flow [2025-01-09 16:39:38,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 537 transitions, 7916 flow, removed 86 selfloop flow, removed 5 redundant places. [2025-01-09 16:39:38,578 INFO L231 Difference]: Finished difference. Result has 231 places, 431 transitions, 6421 flow [2025-01-09 16:39:38,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5122, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6421, PETRI_PLACES=231, PETRI_TRANSITIONS=431} [2025-01-09 16:39:38,579 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2025-01-09 16:39:38,579 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 431 transitions, 6421 flow [2025-01-09 16:39:38,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 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) [2025-01-09 16:39:38,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:38,579 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:38,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 16:39:38,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:38,783 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:39:38,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash -222583177, now seen corresponding path program 11 times [2025-01-09 16:39:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:38,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140521353] [2025-01-09 16:39:38,784 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:39:38,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:38,794 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:38,822 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:38,822 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 16:39:38,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:39,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:39,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140521353] [2025-01-09 16:39:39,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140521353] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:39,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339504591] [2025-01-09 16:39:39,438 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:39:39,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:39,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:39,440 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:39,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 16:39:39,553 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:39,753 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:39:39,753 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 16:39:39,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:39,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 16:39:39,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:40,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:39:40,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2025-01-09 16:39:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:40,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:40,539 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2025-01-09 16:39:40,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2025-01-09 16:39:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:45,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339504591] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:45,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:45,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 30 [2025-01-09 16:39:45,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175238667] [2025-01-09 16:39:45,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:45,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 16:39:45,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:45,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 16:39:45,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2025-01-09 16:39:45,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-01-09 16:39:45,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 431 transitions, 6421 flow. Second operand has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:45,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:45,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-01-09 16:39:45,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:48,044 INFO L124 PetriNetUnfolderBase]: 4598/6843 cut-off events. [2025-01-09 16:39:48,045 INFO L125 PetriNetUnfolderBase]: For 129322/129322 co-relation queries the response was YES. [2025-01-09 16:39:48,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53823 conditions, 6843 events. 4598/6843 cut-off events. For 129322/129322 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 37407 event pairs, 849 based on Foata normal form. 4/6836 useless extension candidates. Maximal degree in co-relation 53658. Up to 5648 conditions per place. [2025-01-09 16:39:48,100 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 344 selfloop transitions, 162 changer transitions 2/509 dead transitions. [2025-01-09 16:39:48,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 509 transitions, 8093 flow [2025-01-09 16:39:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:39:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:39:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 187 transitions. [2025-01-09 16:39:48,103 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2025-01-09 16:39:48,103 INFO L175 Difference]: Start difference. First operand has 231 places, 431 transitions, 6421 flow. Second operand 17 states and 187 transitions. [2025-01-09 16:39:48,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 509 transitions, 8093 flow [2025-01-09 16:39:48,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 509 transitions, 7819 flow, removed 80 selfloop flow, removed 9 redundant places. [2025-01-09 16:39:48,441 INFO L231 Difference]: Finished difference. Result has 242 places, 445 transitions, 6813 flow [2025-01-09 16:39:48,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6147, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6813, PETRI_PLACES=242, PETRI_TRANSITIONS=445} [2025-01-09 16:39:48,442 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2025-01-09 16:39:48,443 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 445 transitions, 6813 flow [2025-01-09 16:39:48,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:39:48,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:48,444 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:48,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 16:39:48,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:48,645 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:39:48,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1421032213, now seen corresponding path program 12 times [2025-01-09 16:39:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:48,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919139507] [2025-01-09 16:39:48,645 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:39:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:48,656 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:48,672 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 39 statements. [2025-01-09 16:39:48,672 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:39:48,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:49,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919139507] [2025-01-09 16:39:49,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919139507] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906227930] [2025-01-09 16:39:49,218 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:39:49,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:49,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:49,221 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:49,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 16:39:49,341 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:39:49,375 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 39 statements. [2025-01-09 16:39:49,375 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:39:49,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:49,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:39:49,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:49,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:39:49,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2025-01-09 16:39:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:39:49,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:50,103 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2025-01-09 16:39:50,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210