./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/array-eq-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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:11:10,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:11:10,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:11:10,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:11:10,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:11:10,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:11:10,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:11:10,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:11:10,460 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:11:10,460 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:11:10,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:11:10,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:11:10,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:11:10,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:11:10,461 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:11:10,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:11:10,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:11:10,461 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:11:10,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:11:10,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:11:10,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:11:10,462 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:11:10,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:11:10,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:11:10,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:11:10,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:11:10,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:11:10,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:11:10,463 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 -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2025-02-08 01:11:10,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:11:10,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:11:10,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:11:10,685 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:11:10,685 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:11:10,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2025-02-08 01:11:11,854 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/58f233b13/91f9c280b6794ac29c4cde85254b277e/FLAG4da5221d2 [2025-02-08 01:11:12,095 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:11:12,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2025-02-08 01:11:12,104 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/58f233b13/91f9c280b6794ac29c4cde85254b277e/FLAG4da5221d2 [2025-02-08 01:11:12,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/58f233b13/91f9c280b6794ac29c4cde85254b277e [2025-02-08 01:11:12,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:11:12,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:11:12,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:11:12,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:11:12,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:11:12,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178c604e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12, skipping insertion in model container [2025-02-08 01:11:12,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,454 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:11:12,574 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/array-eq-trans.wvr.c[2776,2789] [2025-02-08 01:11:12,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:11:12,590 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:11:12,608 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/array-eq-trans.wvr.c[2776,2789] [2025-02-08 01:11:12,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:11:12,625 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:11:12,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12 WrapperNode [2025-02-08 01:11:12,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:11:12,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:11:12,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:11:12,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:11:12,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,660 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 185 [2025-02-08 01:11:12,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:11:12,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:11:12,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:11:12,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:11:12,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,683 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 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]. [2025-02-08 01:11:12,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:11:12,696 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:11:12,696 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:11:12,696 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:11:12,697 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (1/1) ... [2025-02-08 01:11:12,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:11:12,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:11:12,723 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) [2025-02-08 01:11:12,726 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 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:11:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:11:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:11:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:11:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:11:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:11:12,743 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:11:12,815 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:11:12,816 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:11:13,086 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:11:13,086 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:11:13,303 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:11:13,303 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:11:13,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:11:13 BoogieIcfgContainer [2025-02-08 01:11:13,304 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:11:13,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:11:13,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:11:13,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:11:13,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:11:12" (1/3) ... [2025-02-08 01:11:13,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a80e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:11:13, skipping insertion in model container [2025-02-08 01:11:13,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:11:12" (2/3) ... [2025-02-08 01:11:13,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a80e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:11:13, skipping insertion in model container [2025-02-08 01:11:13,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:11:13" (3/3) ... [2025-02-08 01:11:13,313 INFO L128 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2025-02-08 01:11:13,325 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:11:13,327 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array-eq-trans.wvr.c that has 4 procedures, 32 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-08 01:11:13,327 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:11:13,362 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 01:11:13,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2025-02-08 01:11:13,402 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2025-02-08 01:11:13,404 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:11:13,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 01:11:13,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2025-02-08 01:11:13,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2025-02-08 01:11:13,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:11:13,435 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;@179f6631, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:11:13,435 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:11:13,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:11:13,456 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2025-02-08 01:11:13,456 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:11:13,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:13,457 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] [2025-02-08 01:11:13,458 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)] === [2025-02-08 01:11:13,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1310397027, now seen corresponding path program 1 times [2025-02-08 01:11:13,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:13,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649697194] [2025-02-08 01:11:13,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:13,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:13,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:11:13,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:11:13,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:13,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:11:14,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649697194] [2025-02-08 01:11:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649697194] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:11:14,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:11:14,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:11:14,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658906347] [2025-02-08 01:11:14,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:14,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:11:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:14,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:11:14,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:11:14,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2025-02-08 01:11:14,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2025-02-08 01:11:14,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:14,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2025-02-08 01:11:14,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:14,547 INFO L124 PetriNetUnfolderBase]: 1327/1881 cut-off events. [2025-02-08 01:11:14,547 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2025-02-08 01:11:14,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3763 conditions, 1881 events. 1327/1881 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8624 event pairs, 745 based on Foata normal form. 42/1605 useless extension candidates. Maximal degree in co-relation 2273. Up to 1164 conditions per place. [2025-02-08 01:11:14,566 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 28 selfloop transitions, 2 changer transitions 23/60 dead transitions. [2025-02-08 01:11:14,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 262 flow [2025-02-08 01:11:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:11:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:11:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-02-08 01:11:14,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-08 01:11:14,578 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 4 states and 95 transitions. [2025-02-08 01:11:14,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 262 flow [2025-02-08 01:11:14,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 60 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:11:14,591 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 94 flow [2025-02-08 01:11:14,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2025-02-08 01:11:14,596 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-02-08 01:11:14,597 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 94 flow [2025-02-08 01:11:14,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2025-02-08 01:11:14,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:14,597 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] [2025-02-08 01:11:14,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:11:14,598 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)] === [2025-02-08 01:11:14,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1369785782, now seen corresponding path program 1 times [2025-02-08 01:11:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:14,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923918566] [2025-02-08 01:11:14,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:14,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:14,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:11:14,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:11:14,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:14,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:11:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923918566] [2025-02-08 01:11:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923918566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930264828] [2025-02-08 01:11:14,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:14,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:11:14,957 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) [2025-02-08 01:11:14,959 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 [2025-02-08 01:11:15,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:11:15,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:11:15,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:15,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:15,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:11:15,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:11:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:11:15,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:11:15,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:11:15,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2025-02-08 01:11:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:11:15,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930264828] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:15,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:11:15,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 11 [2025-02-08 01:11:15,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650316788] [2025-02-08 01:11:15,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:15,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:11:15,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:15,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:11:15,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:11:15,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-08 01:11:15,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:11:15,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:15,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-08 01:11:15,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:15,752 INFO L124 PetriNetUnfolderBase]: 1720/2381 cut-off events. [2025-02-08 01:11:15,752 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2025-02-08 01:11:15,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 2381 events. 1720/2381 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11076 event pairs, 439 based on Foata normal form. 1/1925 useless extension candidates. Maximal degree in co-relation 4918. Up to 940 conditions per place. [2025-02-08 01:11:15,770 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 62 selfloop transitions, 5 changer transitions 1/74 dead transitions. [2025-02-08 01:11:15,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 74 transitions, 320 flow [2025-02-08 01:11:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:11:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:11:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2025-02-08 01:11:15,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.57 [2025-02-08 01:11:15,772 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 94 flow. Second operand 5 states and 114 transitions. [2025-02-08 01:11:15,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 74 transitions, 320 flow [2025-02-08 01:11:15,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 74 transitions, 306 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 01:11:15,776 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 114 flow [2025-02-08 01:11:15,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2025-02-08 01:11:15,776 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2025-02-08 01:11:15,776 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 114 flow [2025-02-08 01:11:15,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:11:15,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:15,777 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, 1] [2025-02-08 01:11:15,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:11:15,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:15,982 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)] === [2025-02-08 01:11:15,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:15,987 INFO L85 PathProgramCache]: Analyzing trace with hash 345782972, now seen corresponding path program 1 times [2025-02-08 01:11:15,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:15,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832191580] [2025-02-08 01:11:15,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:15,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:16,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:11:16,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:11:16,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:16,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832191580] [2025-02-08 01:11:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832191580] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:11:16,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:11:16,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:11:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114679725] [2025-02-08 01:11:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:16,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:11:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:16,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:11:16,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:11:16,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2025-02-08 01:11:16,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2025-02-08 01:11:16,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:16,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2025-02-08 01:11:16,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:16,429 INFO L124 PetriNetUnfolderBase]: 2253/3224 cut-off events. [2025-02-08 01:11:16,429 INFO L125 PetriNetUnfolderBase]: For 361/369 co-relation queries the response was YES. [2025-02-08 01:11:16,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 3224 events. 2253/3224 cut-off events. For 361/369 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 16703 event pairs, 771 based on Foata normal form. 53/2898 useless extension candidates. Maximal degree in co-relation 6767. Up to 1406 conditions per place. [2025-02-08 01:11:16,445 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 48 selfloop transitions, 4 changer transitions 21/81 dead transitions. [2025-02-08 01:11:16,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 81 transitions, 361 flow [2025-02-08 01:11:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:11:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:11:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-02-08 01:11:16,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615 [2025-02-08 01:11:16,447 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 114 flow. Second operand 5 states and 123 transitions. [2025-02-08 01:11:16,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 81 transitions, 361 flow [2025-02-08 01:11:16,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 81 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:11:16,453 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 142 flow [2025-02-08 01:11:16,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2025-02-08 01:11:16,453 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2025-02-08 01:11:16,453 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 142 flow [2025-02-08 01:11:16,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2025-02-08 01:11:16,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:16,454 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, 1, 1] [2025-02-08 01:11:16,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:11:16,454 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)] === [2025-02-08 01:11:16,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:16,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2035206278, now seen corresponding path program 1 times [2025-02-08 01:11:16,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:16,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742041420] [2025-02-08 01:11:16,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:16,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:16,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:11:16,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:11:16,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:16,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:16,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:16,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742041420] [2025-02-08 01:11:16,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742041420] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:16,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383989705] [2025-02-08 01:11:16,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:16,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:16,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:11:16,778 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) [2025-02-08 01:11:16,779 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 [2025-02-08 01:11:16,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:11:16,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:11:16,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:16,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:16,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:11:16,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:11:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:16,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:11:17,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:11:17,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2025-02-08 01:11:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:17,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383989705] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:17,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:11:17,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2025-02-08 01:11:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436775706] [2025-02-08 01:11:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:17,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:11:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:17,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:11:17,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:11:17,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-08 01:11:17,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2025-02-08 01:11:17,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:17,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-08 01:11:17,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:17,615 INFO L124 PetriNetUnfolderBase]: 4357/6188 cut-off events. [2025-02-08 01:11:17,616 INFO L125 PetriNetUnfolderBase]: For 2839/2973 co-relation queries the response was YES. [2025-02-08 01:11:17,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13971 conditions, 6188 events. 4357/6188 cut-off events. For 2839/2973 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 34246 event pairs, 1029 based on Foata normal form. 3/5280 useless extension candidates. Maximal degree in co-relation 13945. Up to 1821 conditions per place. [2025-02-08 01:11:17,636 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 81 selfloop transitions, 7 changer transitions 3/98 dead transitions. [2025-02-08 01:11:17,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 98 transitions, 517 flow [2025-02-08 01:11:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:11:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:11:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2025-02-08 01:11:17,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2025-02-08 01:11:17,640 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 142 flow. Second operand 7 states and 146 transitions. [2025-02-08 01:11:17,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 98 transitions, 517 flow [2025-02-08 01:11:17,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 98 transitions, 502 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 01:11:17,642 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 170 flow [2025-02-08 01:11:17,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2025-02-08 01:11:17,642 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2025-02-08 01:11:17,644 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 170 flow [2025-02-08 01:11:17,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2025-02-08 01:11:17,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:17,644 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, 1, 1, 1] [2025-02-08 01:11:17,650 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 [2025-02-08 01:11:17,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:17,845 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)] === [2025-02-08 01:11:17,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash 919001188, now seen corresponding path program 1 times [2025-02-08 01:11:17,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:17,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151666683] [2025-02-08 01:11:17,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:17,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 01:11:17,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 01:11:17,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:17,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:11:17,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:17,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151666683] [2025-02-08 01:11:17,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151666683] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:11:17,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:11:17,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:11:17,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49173537] [2025-02-08 01:11:17,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:17,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:11:17,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:17,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:11:17,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:11:17,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2025-02-08 01:11:17,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2025-02-08 01:11:17,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:17,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2025-02-08 01:11:17,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:18,347 INFO L124 PetriNetUnfolderBase]: 4149/6162 cut-off events. [2025-02-08 01:11:18,347 INFO L125 PetriNetUnfolderBase]: For 3047/3169 co-relation queries the response was YES. [2025-02-08 01:11:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14301 conditions, 6162 events. 4149/6162 cut-off events. For 3047/3169 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 37126 event pairs, 1700 based on Foata normal form. 123/5868 useless extension candidates. Maximal degree in co-relation 14271. Up to 2693 conditions per place. [2025-02-08 01:11:18,377 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 51 selfloop transitions, 4 changer transitions 21/85 dead transitions. [2025-02-08 01:11:18,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 454 flow [2025-02-08 01:11:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:11:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:11:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2025-02-08 01:11:18,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.595 [2025-02-08 01:11:18,379 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 170 flow. Second operand 5 states and 119 transitions. [2025-02-08 01:11:18,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 454 flow [2025-02-08 01:11:18,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:11:18,383 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 184 flow [2025-02-08 01:11:18,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-02-08 01:11:18,384 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2025-02-08 01:11:18,384 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 184 flow [2025-02-08 01:11:18,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2025-02-08 01:11:18,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:18,384 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, 1, 1, 1, 1] [2025-02-08 01:11:18,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:11:18,385 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)] === [2025-02-08 01:11:18,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1681215967, now seen corresponding path program 1 times [2025-02-08 01:11:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:18,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112275964] [2025-02-08 01:11:18,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:18,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:11:18,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:11:18,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:18,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:18,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:18,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112275964] [2025-02-08 01:11:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112275964] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:18,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491966898] [2025-02-08 01:11:18,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:18,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:18,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:11:18,542 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) [2025-02-08 01:11:18,550 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 [2025-02-08 01:11:18,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:11:18,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:11:18,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:18,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:18,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:11:18,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:11:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:18,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:11:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491966898] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:18,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:11:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2025-02-08 01:11:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441698396] [2025-02-08 01:11:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:18,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:11:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:18,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:11:18,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:11:18,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-08 01:11:18,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-02-08 01:11:18,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:18,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-08 01:11:18,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:19,391 INFO L124 PetriNetUnfolderBase]: 6384/9370 cut-off events. [2025-02-08 01:11:19,391 INFO L125 PetriNetUnfolderBase]: For 7284/7495 co-relation queries the response was YES. [2025-02-08 01:11:19,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22968 conditions, 9370 events. 6384/9370 cut-off events. For 7284/7495 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 56289 event pairs, 2331 based on Foata normal form. 0/8558 useless extension candidates. Maximal degree in co-relation 22936. Up to 3821 conditions per place. [2025-02-08 01:11:19,434 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 69 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2025-02-08 01:11:19,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 496 flow [2025-02-08 01:11:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:11:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:11:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2025-02-08 01:11:19,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2025-02-08 01:11:19,435 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 184 flow. Second operand 7 states and 127 transitions. [2025-02-08 01:11:19,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 496 flow [2025-02-08 01:11:19,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 84 transitions, 484 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 01:11:19,440 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 206 flow [2025-02-08 01:11:19,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2025-02-08 01:11:19,440 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2025-02-08 01:11:19,440 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 206 flow [2025-02-08 01:11:19,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-02-08 01:11:19,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:19,441 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, 1, 1, 1, 1, 1] [2025-02-08 01:11:19,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 01:11:19,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:19,642 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)] === [2025-02-08 01:11:19,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash 497720873, now seen corresponding path program 1 times [2025-02-08 01:11:19,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:19,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548615548] [2025-02-08 01:11:19,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:19,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 01:11:19,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:11:19,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:19,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:11:20,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:20,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548615548] [2025-02-08 01:11:20,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548615548] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:11:20,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:11:20,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:11:20,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992096000] [2025-02-08 01:11:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:20,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:11:20,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:20,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:11:20,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:11:20,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-08 01:11:20,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2025-02-08 01:11:20,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:20,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-08 01:11:20,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:21,179 INFO L124 PetriNetUnfolderBase]: 9303/13428 cut-off events. [2025-02-08 01:11:21,179 INFO L125 PetriNetUnfolderBase]: For 10908/10908 co-relation queries the response was YES. [2025-02-08 01:11:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35808 conditions, 13428 events. 9303/13428 cut-off events. For 10908/10908 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 79009 event pairs, 2563 based on Foata normal form. 23/13435 useless extension candidates. Maximal degree in co-relation 35773. Up to 11743 conditions per place. [2025-02-08 01:11:21,230 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 76 selfloop transitions, 13 changer transitions 11/104 dead transitions. [2025-02-08 01:11:21,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 104 transitions, 599 flow [2025-02-08 01:11:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:11:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:11:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2025-02-08 01:11:21,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2025-02-08 01:11:21,231 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 206 flow. Second operand 6 states and 134 transitions. [2025-02-08 01:11:21,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 104 transitions, 599 flow [2025-02-08 01:11:21,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 593 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:11:21,249 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 312 flow [2025-02-08 01:11:21,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2025-02-08 01:11:21,250 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2025-02-08 01:11:21,250 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 312 flow [2025-02-08 01:11:21,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2025-02-08 01:11:21,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:21,251 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, 1, 1, 1, 1, 1, 1] [2025-02-08 01:11:21,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:11:21,251 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)] === [2025-02-08 01:11:21,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1412820833, now seen corresponding path program 1 times [2025-02-08 01:11:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:21,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985082548] [2025-02-08 01:11:21,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:21,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:11:21,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:21,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:21,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:11:21,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:21,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985082548] [2025-02-08 01:11:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985082548] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:21,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321953181] [2025-02-08 01:11:21,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:21,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:21,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:11:21,410 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) [2025-02-08 01:11:21,412 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 [2025-02-08 01:11:21,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:11:21,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:21,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:21,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:21,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 01:11:21,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:11:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:11:21,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:11:21,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:11:21,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 39 [2025-02-08 01:11:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:11:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321953181] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:11:21,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:11:21,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2025-02-08 01:11:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921354458] [2025-02-08 01:11:21,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:11:21,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:11:21,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:21,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:11:21,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:11:21,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2025-02-08 01:11:21,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 312 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 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) [2025-02-08 01:11:21,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:21,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2025-02-08 01:11:21,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:22,375 INFO L124 PetriNetUnfolderBase]: 8103/12333 cut-off events. [2025-02-08 01:11:22,375 INFO L125 PetriNetUnfolderBase]: For 18342/18643 co-relation queries the response was YES. [2025-02-08 01:11:22,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35269 conditions, 12333 events. 8103/12333 cut-off events. For 18342/18643 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 78713 event pairs, 5672 based on Foata normal form. 207/12519 useless extension candidates. Maximal degree in co-relation 35013. Up to 7003 conditions per place. [2025-02-08 01:11:22,425 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 86 selfloop transitions, 4 changer transitions 21/118 dead transitions. [2025-02-08 01:11:22,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 118 transitions, 873 flow [2025-02-08 01:11:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:11:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:11:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2025-02-08 01:11:22,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2025-02-08 01:11:22,426 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 312 flow. Second operand 6 states and 133 transitions. [2025-02-08 01:11:22,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 118 transitions, 873 flow [2025-02-08 01:11:22,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 118 transitions, 836 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-02-08 01:11:22,438 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 334 flow [2025-02-08 01:11:22,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2025-02-08 01:11:22,438 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2025-02-08 01:11:22,438 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 334 flow [2025-02-08 01:11:22,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 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) [2025-02-08 01:11:22,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:22,439 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, 1, 1, 1, 1, 1, 1] [2025-02-08 01:11:22,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 01:11:22,643 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,SelfDestructingSolverStorable7 [2025-02-08 01:11:22,643 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)] === [2025-02-08 01:11:22,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:22,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1937838885, now seen corresponding path program 1 times [2025-02-08 01:11:22,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:22,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734868120] [2025-02-08 01:11:22,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:22,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:22,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:11:22,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:22,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:22,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:23,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:23,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734868120] [2025-02-08 01:11:23,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734868120] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905912008] [2025-02-08 01:11:23,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:23,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:11:23,527 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) [2025-02-08 01:11:23,528 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 [2025-02-08 01:11:23,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:11:23,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:23,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:23,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:23,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 01:11:23,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:11:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:11:23,906 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:11:23,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905912008] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:11:23,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:11:23,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2025-02-08 01:11:23,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557945538] [2025-02-08 01:11:23,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:23,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:11:23,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:23,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:11:23,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-02-08 01:11:23,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2025-02-08 01:11:23,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 334 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-08 01:11:23,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:23,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2025-02-08 01:11:23,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:24,840 INFO L124 PetriNetUnfolderBase]: 9525/14004 cut-off events. [2025-02-08 01:11:24,840 INFO L125 PetriNetUnfolderBase]: For 16188/16512 co-relation queries the response was YES. [2025-02-08 01:11:24,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39827 conditions, 14004 events. 9525/14004 cut-off events. For 16188/16512 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 85538 event pairs, 1284 based on Foata normal form. 4/13986 useless extension candidates. Maximal degree in co-relation 36472. Up to 9177 conditions per place. [2025-02-08 01:11:24,952 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 109 selfloop transitions, 24 changer transitions 2/140 dead transitions. [2025-02-08 01:11:24,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 140 transitions, 936 flow [2025-02-08 01:11:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:11:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:11:24,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2025-02-08 01:11:24,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.559375 [2025-02-08 01:11:24,959 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 334 flow. Second operand 8 states and 179 transitions. [2025-02-08 01:11:24,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 140 transitions, 936 flow [2025-02-08 01:11:24,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 918 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-02-08 01:11:25,001 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 513 flow [2025-02-08 01:11:25,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2025-02-08 01:11:25,003 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2025-02-08 01:11:25,003 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 513 flow [2025-02-08 01:11:25,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-08 01:11:25,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:25,003 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, 1, 1, 1, 1, 1, 1] [2025-02-08 01:11:25,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 01:11:25,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:25,204 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)] === [2025-02-08 01:11:25,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -382966995, now seen corresponding path program 1 times [2025-02-08 01:11:25,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:25,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353595653] [2025-02-08 01:11:25,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:11:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:25,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:11:25,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:25,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:11:25,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:11:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353595653] [2025-02-08 01:11:25,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353595653] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:11:25,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:11:25,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 01:11:25,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011330537] [2025-02-08 01:11:25,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:11:25,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 01:11:25,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:25,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 01:11:25,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 01:11:25,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-08 01:11:25,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 513 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2025-02-08 01:11:25,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:25,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-08 01:11:25,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:27,274 INFO L124 PetriNetUnfolderBase]: 11379/16552 cut-off events. [2025-02-08 01:11:27,274 INFO L125 PetriNetUnfolderBase]: For 28576/28600 co-relation queries the response was YES. [2025-02-08 01:11:27,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51340 conditions, 16552 events. 11379/16552 cut-off events. For 28576/28600 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 99159 event pairs, 3832 based on Foata normal form. 20/16544 useless extension candidates. Maximal degree in co-relation 47989. Up to 13789 conditions per place. [2025-02-08 01:11:27,374 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 97 selfloop transitions, 43 changer transitions 2/146 dead transitions. [2025-02-08 01:11:27,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 146 transitions, 1245 flow [2025-02-08 01:11:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:11:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:11:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2025-02-08 01:11:27,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.490625 [2025-02-08 01:11:27,376 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 513 flow. Second operand 8 states and 157 transitions. [2025-02-08 01:11:27,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 146 transitions, 1245 flow [2025-02-08 01:11:27,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 146 transitions, 1227 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-08 01:11:27,475 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 956 flow [2025-02-08 01:11:27,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=956, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2025-02-08 01:11:27,477 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2025-02-08 01:11:27,477 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 956 flow [2025-02-08 01:11:27,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2025-02-08 01:11:27,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:27,477 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, 1, 1, 1, 1, 1, 1] [2025-02-08 01:11:27,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:11:27,477 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)] === [2025-02-08 01:11:27,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2135938333, now seen corresponding path program 2 times [2025-02-08 01:11:27,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:27,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042624571] [2025-02-08 01:11:27,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:11:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:27,491 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:11:27,554 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:27,554 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:11:27,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:11:28,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:11:28,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042624571] [2025-02-08 01:11:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042624571] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:11:28,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941701867] [2025-02-08 01:11:28,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:11:28,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:11:28,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:11:28,371 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) [2025-02-08 01:11:28,372 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 [2025-02-08 01:11:28,439 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:11:28,467 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:28,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:11:28,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:11:28,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 01:11:28,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:11:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:11:28,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:11:29,820 INFO L349 Elim1Store]: treesize reduction 22, result has 94.7 percent of original size [2025-02-08 01:11:29,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 433 [2025-02-08 01:11:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:11:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941701867] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:11:57,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:11:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 18 [2025-02-08 01:11:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827030066] [2025-02-08 01:11:57,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:11:57,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:11:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:11:57,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:11:57,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:11:57,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-08 01:11:57,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 956 flow. Second operand has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 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) [2025-02-08 01:11:57,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:11:57,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-08 01:11:57,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:11:58,882 INFO L124 PetriNetUnfolderBase]: 12448/18067 cut-off events. [2025-02-08 01:11:58,882 INFO L125 PetriNetUnfolderBase]: For 38664/38664 co-relation queries the response was YES. [2025-02-08 01:11:58,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60018 conditions, 18067 events. 12448/18067 cut-off events. For 38664/38664 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 109947 event pairs, 4603 based on Foata normal form. 8/18069 useless extension candidates. Maximal degree in co-relation 56780. Up to 12178 conditions per place. [2025-02-08 01:11:59,003 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 131 selfloop transitions, 69 changer transitions 3/207 dead transitions. [2025-02-08 01:11:59,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 207 transitions, 1882 flow [2025-02-08 01:11:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 01:11:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 01:11:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 259 transitions. [2025-02-08 01:11:59,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43166666666666664 [2025-02-08 01:11:59,006 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 956 flow. Second operand 15 states and 259 transitions. [2025-02-08 01:11:59,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 207 transitions, 1882 flow [2025-02-08 01:11:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 207 transitions, 1854 flow, removed 13 selfloop flow, removed 1 redundant places. [2025-02-08 01:11:59,245 INFO L231 Difference]: Finished difference. Result has 102 places, 121 transitions, 1354 flow [2025-02-08 01:11:59,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1354, PETRI_PLACES=102, PETRI_TRANSITIONS=121} [2025-02-08 01:11:59,246 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 65 predicate places. [2025-02-08 01:11:59,246 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 121 transitions, 1354 flow [2025-02-08 01:11:59,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 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) [2025-02-08 01:11:59,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:11:59,247 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, 1, 1, 1, 1, 1, 1] [2025-02-08 01:11:59,254 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 [2025-02-08 01:11:59,447 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,SelfDestructingSolverStorable10 [2025-02-08 01:11:59,448 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)] === [2025-02-08 01:11:59,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:11:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1669630693, now seen corresponding path program 2 times [2025-02-08 01:11:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:11:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035835029] [2025-02-08 01:11:59,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:11:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:11:59,461 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:11:59,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:11:59,495 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:11:59,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:12:00,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:00,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035835029] [2025-02-08 01:12:00,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035835029] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243950859] [2025-02-08 01:12:00,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:00,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:00,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:00,157 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) [2025-02-08 01:12:00,162 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 [2025-02-08 01:12:00,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:12:00,250 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:12:00,250 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:00,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:00,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 01:12:00,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:12:00,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:01,112 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2025-02-08 01:12:01,112 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 79 treesize of output 235 [2025-02-08 01:12:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:12:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243950859] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:05,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:05,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2025-02-08 01:12:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393192105] [2025-02-08 01:12:05,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:05,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 01:12:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:05,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 01:12:05,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2025-02-08 01:12:05,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2025-02-08 01:12:05,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 121 transitions, 1354 flow. Second operand has 21 states, 21 states have (on average 11.095238095238095) internal successors, (233), 21 states have internal predecessors, (233), 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) [2025-02-08 01:12:05,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:05,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2025-02-08 01:12:05,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:07,249 INFO L124 PetriNetUnfolderBase]: 15124/22205 cut-off events. [2025-02-08 01:12:07,249 INFO L125 PetriNetUnfolderBase]: For 59437/59989 co-relation queries the response was YES. [2025-02-08 01:12:07,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74755 conditions, 22205 events. 15124/22205 cut-off events. For 59437/59989 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 143648 event pairs, 2864 based on Foata normal form. 24/22207 useless extension candidates. Maximal degree in co-relation 71870. Up to 11874 conditions per place. [2025-02-08 01:12:07,390 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 184 selfloop transitions, 71 changer transitions 12/272 dead transitions. [2025-02-08 01:12:07,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 272 transitions, 2582 flow [2025-02-08 01:12:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 01:12:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 01:12:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 301 transitions. [2025-02-08 01:12:07,392 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5375 [2025-02-08 01:12:07,392 INFO L175 Difference]: Start difference. First operand has 102 places, 121 transitions, 1354 flow. Second operand 14 states and 301 transitions. [2025-02-08 01:12:07,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 272 transitions, 2582 flow [2025-02-08 01:12:07,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 272 transitions, 2502 flow, removed 17 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:07,715 INFO L231 Difference]: Finished difference. Result has 119 places, 140 transitions, 1676 flow [2025-02-08 01:12:07,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1676, PETRI_PLACES=119, PETRI_TRANSITIONS=140} [2025-02-08 01:12:07,716 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 82 predicate places. [2025-02-08 01:12:07,717 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 140 transitions, 1676 flow [2025-02-08 01:12:07,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.095238095238095) internal successors, (233), 21 states have internal predecessors, (233), 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) [2025-02-08 01:12:07,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:07,717 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, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:07,724 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 [2025-02-08 01:12:07,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:07,918 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)] === [2025-02-08 01:12:07,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash 757023823, now seen corresponding path program 3 times [2025-02-08 01:12:07,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:07,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750019095] [2025-02-08 01:12:07,918 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:07,927 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:12:07,940 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 31 statements. [2025-02-08 01:12:07,940 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:12:07,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:12:08,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:08,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750019095] [2025-02-08 01:12:08,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750019095] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:08,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:08,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 01:12:08,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341635084] [2025-02-08 01:12:08,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:08,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 01:12:08,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:08,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 01:12:08,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-02-08 01:12:08,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2025-02-08 01:12:08,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 140 transitions, 1676 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2025-02-08 01:12:08,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:08,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2025-02-08 01:12:08,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:10,235 INFO L124 PetriNetUnfolderBase]: 16482/24229 cut-off events. [2025-02-08 01:12:10,235 INFO L125 PetriNetUnfolderBase]: For 83058/83662 co-relation queries the response was YES. [2025-02-08 01:12:10,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89108 conditions, 24229 events. 16482/24229 cut-off events. For 83058/83662 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 158629 event pairs, 6476 based on Foata normal form. 8/24219 useless extension candidates. Maximal degree in co-relation 87084. Up to 20196 conditions per place. [2025-02-08 01:12:10,336 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 151 selfloop transitions, 55 changer transitions 3/214 dead transitions. [2025-02-08 01:12:10,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 214 transitions, 2488 flow [2025-02-08 01:12:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2025-02-08 01:12:10,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.540625 [2025-02-08 01:12:10,339 INFO L175 Difference]: Start difference. First operand has 119 places, 140 transitions, 1676 flow. Second operand 8 states and 173 transitions. [2025-02-08 01:12:10,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 214 transitions, 2488 flow [2025-02-08 01:12:10,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 214 transitions, 2394 flow, removed 19 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:10,869 INFO L231 Difference]: Finished difference. Result has 125 places, 151 transitions, 1887 flow [2025-02-08 01:12:10,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1887, PETRI_PLACES=125, PETRI_TRANSITIONS=151} [2025-02-08 01:12:10,869 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 88 predicate places. [2025-02-08 01:12:10,869 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 151 transitions, 1887 flow [2025-02-08 01:12:10,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2025-02-08 01:12:10,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:10,869 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, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:10,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 01:12:10,869 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)] === [2025-02-08 01:12:10,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash -837636355, now seen corresponding path program 4 times [2025-02-08 01:12:10,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:10,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629477503] [2025-02-08 01:12:10,870 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:10,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:10,877 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:12:10,886 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:12:10,886 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:10,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:12:11,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:11,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629477503] [2025-02-08 01:12:11,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629477503] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:11,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912554555] [2025-02-08 01:12:11,343 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:11,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:11,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:11,345 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) [2025-02-08 01:12:11,347 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 [2025-02-08 01:12:11,414 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:12:11,436 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:12:11,437 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:11,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:11,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:12:11,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:12:11,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:12,382 INFO L349 Elim1Store]: treesize reduction 22, result has 94.7 percent of original size [2025-02-08 01:12:12,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 433