./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:24:23,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:24:23,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:24:23,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:24:23,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:24:23,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:24:23,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:24:23,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:24:23,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:24:23,508 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:24:23,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:24:23,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:24:23,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:24:23,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:24:23,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:24:23,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:24:23,511 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:24:23,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:24:23,511 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:24:23,511 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:24:23,511 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:24:23,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:24:23,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:24:23,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:24:23,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:24:23,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:24:23,512 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/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 -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2025-03-04 02:24:23,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:24:23,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:24:23,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:24:23,776 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:24:23,776 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:24:23,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2025-03-04 02:24:24,907 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de5415bd/8d644db91cc74ee592cd79a7ff42d186/FLAG97e414103 [2025-03-04 02:24:25,125 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:24:25,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2025-03-04 02:24:25,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de5415bd/8d644db91cc74ee592cd79a7ff42d186/FLAG97e414103 [2025-03-04 02:24:25,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de5415bd/8d644db91cc74ee592cd79a7ff42d186 [2025-03-04 02:24:25,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:24:25,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:24:25,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:24:25,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:24:25,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:24:25,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cca0f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25, skipping insertion in model container [2025-03-04 02:24:25,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,505 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:24:25,645 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2025-03-04 02:24:25,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:24:25,665 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:24:25,694 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2025-03-04 02:24:25,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:24:25,715 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:24:25,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25 WrapperNode [2025-03-04 02:24:25,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:24:25,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:24:25,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:24:25,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:24:25,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,753 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 319 [2025-03-04 02:24:25,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:24:25,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:24:25,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:24:25,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:24:25,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,784 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 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]. [2025-03-04 02:24:25,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,797 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:24:25,803 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:24:25,803 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:24:25,803 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:24:25,804 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (1/1) ... [2025-03-04 02:24:25,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:24:25,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:24:25,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 02:24:25,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 02:24:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 02:24:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 02:24:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 02:24:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 02:24:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:24:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 02:24:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 02:24:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 02:24:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 02:24:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:24:25,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:24:25,846 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:24:25,941 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:24:25,942 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:24:26,318 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:24:26,318 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:24:26,601 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:24:26,601 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:24:26,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:24:26 BoogieIcfgContainer [2025-03-04 02:24:26,602 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:24:26,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:24:26,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:24:26,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:24:26,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:24:25" (1/3) ... [2025-03-04 02:24:26,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec9fd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:24:26, skipping insertion in model container [2025-03-04 02:24:26,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:24:25" (2/3) ... [2025-03-04 02:24:26,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec9fd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:24:26, skipping insertion in model container [2025-03-04 02:24:26,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:24:26" (3/3) ... [2025-03-04 02:24:26,610 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2025-03-04 02:24:26,624 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:24:26,625 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series.wvr.c that has 5 procedures, 46 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-03-04 02:24:26,625 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:24:26,681 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 02:24:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 132 flow [2025-03-04 02:24:26,740 INFO L124 PetriNetUnfolderBase]: 7/48 cut-off events. [2025-03-04 02:24:26,742 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 02:24:26,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 7/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-04 02:24:26,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 132 flow [2025-03-04 02:24:26,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 118 flow [2025-03-04 02:24:26,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:24:26,768 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;@7c6e4afe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:24:26,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 02:24:26,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:24:26,787 INFO L124 PetriNetUnfolderBase]: 7/46 cut-off events. [2025-03-04 02:24:26,787 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 02:24:26,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:26,787 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] [2025-03-04 02:24:26,788 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 2 more)] === [2025-03-04 02:24:26,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash 366776383, now seen corresponding path program 1 times [2025-03-04 02:24:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:26,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949524776] [2025-03-04 02:24:26,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:26,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:26,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 02:24:26,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 02:24:26,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:26,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:24:27,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949524776] [2025-03-04 02:24:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949524776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:27,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:27,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:24:27,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005060227] [2025-03-04 02:24:27,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:27,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:24:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:27,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:24:27,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:24:27,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:27,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2025-03-04 02:24:27,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:27,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:27,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:27,899 INFO L124 PetriNetUnfolderBase]: 5629/7734 cut-off events. [2025-03-04 02:24:27,899 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2025-03-04 02:24:27,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15602 conditions, 7734 events. 5629/7734 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 39176 event pairs, 1634 based on Foata normal form. 1/7559 useless extension candidates. Maximal degree in co-relation 14262. Up to 4718 conditions per place. [2025-03-04 02:24:27,960 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 57 selfloop transitions, 3 changer transitions 1/70 dead transitions. [2025-03-04 02:24:27,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 301 flow [2025-03-04 02:24:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:24:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:24:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-04 02:24:27,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-03-04 02:24:27,970 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 118 flow. Second operand 3 states and 101 transitions. [2025-03-04 02:24:27,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 301 flow [2025-03-04 02:24:27,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 275 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-04 02:24:27,983 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 121 flow [2025-03-04 02:24:27,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2025-03-04 02:24:27,989 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2025-03-04 02:24:27,989 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 121 flow [2025-03-04 02:24:27,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2025-03-04 02:24:27,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:27,990 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, 1, 1] [2025-03-04 02:24:27,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:24:27,990 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 2 more)] === [2025-03-04 02:24:27,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2046079184, now seen corresponding path program 1 times [2025-03-04 02:24:27,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:27,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260793081] [2025-03-04 02:24:27,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:27,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:28,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-04 02:24:28,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-04 02:24:28,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:28,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:24:28,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:28,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260793081] [2025-03-04 02:24:28,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260793081] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:28,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:28,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:24:28,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072209557] [2025-03-04 02:24:28,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:28,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:24:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:28,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:24:28,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:24:28,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:28,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2025-03-04 02:24:28,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:28,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:28,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:28,863 INFO L124 PetriNetUnfolderBase]: 6879/9589 cut-off events. [2025-03-04 02:24:28,864 INFO L125 PetriNetUnfolderBase]: For 1239/1239 co-relation queries the response was YES. [2025-03-04 02:24:28,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20242 conditions, 9589 events. 6879/9589 cut-off events. For 1239/1239 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 51696 event pairs, 2262 based on Foata normal form. 231/9725 useless extension candidates. Maximal degree in co-relation 7920. Up to 6208 conditions per place. [2025-03-04 02:24:28,910 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 64 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-03-04 02:24:28,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 319 flow [2025-03-04 02:24:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:24:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:24:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-03-04 02:24:28,913 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2025-03-04 02:24:28,913 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 121 flow. Second operand 3 states and 103 transitions. [2025-03-04 02:24:28,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 319 flow [2025-03-04 02:24:28,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:24:28,915 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 132 flow [2025-03-04 02:24:28,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2025-03-04 02:24:28,916 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2025-03-04 02:24:28,917 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 132 flow [2025-03-04 02:24:28,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2025-03-04 02:24:28,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:28,918 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, 1, 1] [2025-03-04 02:24:28,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:24:28,918 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 2 more)] === [2025-03-04 02:24:28,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash 421941302, now seen corresponding path program 1 times [2025-03-04 02:24:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:28,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158180711] [2025-03-04 02:24:28,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:28,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:28,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-04 02:24:28,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-04 02:24:28,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:28,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:24:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158180711] [2025-03-04 02:24:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158180711] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:29,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:24:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49963039] [2025-03-04 02:24:29,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:29,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:24:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:29,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:24:29,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:24:29,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:29,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2025-03-04 02:24:29,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:29,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:29,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:29,867 INFO L124 PetriNetUnfolderBase]: 8267/11662 cut-off events. [2025-03-04 02:24:29,867 INFO L125 PetriNetUnfolderBase]: For 3103/3103 co-relation queries the response was YES. [2025-03-04 02:24:29,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25376 conditions, 11662 events. 8267/11662 cut-off events. For 3103/3103 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 64749 event pairs, 2562 based on Foata normal form. 177/11761 useless extension candidates. Maximal degree in co-relation 17420. Up to 7562 conditions per place. [2025-03-04 02:24:29,933 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 64 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-03-04 02:24:29,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 335 flow [2025-03-04 02:24:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:24:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:24:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-04 02:24:29,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-03-04 02:24:29,937 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 132 flow. Second operand 3 states and 101 transitions. [2025-03-04 02:24:29,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 335 flow [2025-03-04 02:24:29,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:24:29,941 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 144 flow [2025-03-04 02:24:29,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2025-03-04 02:24:29,942 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2025-03-04 02:24:29,943 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 144 flow [2025-03-04 02:24:29,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2025-03-04 02:24:29,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:29,943 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, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:29,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 02:24:29,944 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 2 more)] === [2025-03-04 02:24:29,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1559229919, now seen corresponding path program 1 times [2025-03-04 02:24:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:29,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028363816] [2025-03-04 02:24:29,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:29,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:29,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 02:24:29,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 02:24:29,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:29,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:24:30,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028363816] [2025-03-04 02:24:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028363816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:30,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:30,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 02:24:30,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13456989] [2025-03-04 02:24:30,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:30,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 02:24:30,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:30,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 02:24:30,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 02:24:30,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:30,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2025-03-04 02:24:30,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:30,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:30,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:31,087 INFO L124 PetriNetUnfolderBase]: 10574/15243 cut-off events. [2025-03-04 02:24:31,087 INFO L125 PetriNetUnfolderBase]: For 5582/5582 co-relation queries the response was YES. [2025-03-04 02:24:31,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34157 conditions, 15243 events. 10574/15243 cut-off events. For 5582/5582 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 92029 event pairs, 8770 based on Foata normal form. 255/15371 useless extension candidates. Maximal degree in co-relation 16875. Up to 10990 conditions per place. [2025-03-04 02:24:31,171 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 73 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2025-03-04 02:24:31,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 403 flow [2025-03-04 02:24:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 02:24:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 02:24:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2025-03-04 02:24:31,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-04 02:24:31,173 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 144 flow. Second operand 5 states and 140 transitions. [2025-03-04 02:24:31,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 403 flow [2025-03-04 02:24:31,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:24:31,177 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 194 flow [2025-03-04 02:24:31,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2025-03-04 02:24:31,179 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2025-03-04 02:24:31,179 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 194 flow [2025-03-04 02:24:31,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2025-03-04 02:24:31,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:31,180 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, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:31,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 02:24:31,180 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 2 more)] === [2025-03-04 02:24:31,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1323614661, now seen corresponding path program 1 times [2025-03-04 02:24:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140606080] [2025-03-04 02:24:31,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:31,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 02:24:31,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 02:24:31,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:31,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:24:31,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140606080] [2025-03-04 02:24:31,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140606080] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:31,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:31,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 02:24:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262517431] [2025-03-04 02:24:31,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:31,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 02:24:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:31,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 02:24:31,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 02:24:31,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:31,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2025-03-04 02:24:31,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:31,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:31,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:32,525 INFO L124 PetriNetUnfolderBase]: 13585/19789 cut-off events. [2025-03-04 02:24:32,525 INFO L125 PetriNetUnfolderBase]: For 7328/7328 co-relation queries the response was YES. [2025-03-04 02:24:32,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43785 conditions, 19789 events. 13585/19789 cut-off events. For 7328/7328 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 126012 event pairs, 11518 based on Foata normal form. 385/20002 useless extension candidates. Maximal degree in co-relation 34618. Up to 14208 conditions per place. [2025-03-04 02:24:32,653 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 75 selfloop transitions, 7 changer transitions 2/93 dead transitions. [2025-03-04 02:24:32,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 478 flow [2025-03-04 02:24:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 02:24:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 02:24:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2025-03-04 02:24:32,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2025-03-04 02:24:32,657 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 194 flow. Second operand 5 states and 136 transitions. [2025-03-04 02:24:32,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 478 flow [2025-03-04 02:24:32,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 474 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 02:24:32,662 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 244 flow [2025-03-04 02:24:32,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2025-03-04 02:24:32,663 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2025-03-04 02:24:32,664 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 244 flow [2025-03-04 02:24:32,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2025-03-04 02:24:32,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:32,665 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:32,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 02:24:32,665 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 2 more)] === [2025-03-04 02:24:32,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash -228304299, now seen corresponding path program 1 times [2025-03-04 02:24:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:32,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445483493] [2025-03-04 02:24:32,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:32,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 02:24:32,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 02:24:32,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:32,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 02:24:32,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445483493] [2025-03-04 02:24:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445483493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:32,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:32,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:24:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225353274] [2025-03-04 02:24:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:32,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:24:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:32,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:24:32,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:24:32,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2025-03-04 02:24:32,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2025-03-04 02:24:32,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:32,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2025-03-04 02:24:32,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:34,736 INFO L124 PetriNetUnfolderBase]: 23298/33136 cut-off events. [2025-03-04 02:24:34,736 INFO L125 PetriNetUnfolderBase]: For 11083/11083 co-relation queries the response was YES. [2025-03-04 02:24:34,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74122 conditions, 33136 events. 23298/33136 cut-off events. For 11083/11083 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 216312 event pairs, 9202 based on Foata normal form. 0/31873 useless extension candidates. Maximal degree in co-relation 57063. Up to 12836 conditions per place. [2025-03-04 02:24:34,920 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 122 selfloop transitions, 11 changer transitions 1/142 dead transitions. [2025-03-04 02:24:34,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 754 flow [2025-03-04 02:24:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:24:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:24:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2025-03-04 02:24:34,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2025-03-04 02:24:34,921 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 244 flow. Second operand 6 states and 187 transitions. [2025-03-04 02:24:34,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 754 flow [2025-03-04 02:24:34,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 142 transitions, 742 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-04 02:24:34,928 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 292 flow [2025-03-04 02:24:34,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2025-03-04 02:24:34,929 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2025-03-04 02:24:34,929 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 292 flow [2025-03-04 02:24:34,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2025-03-04 02:24:34,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:34,929 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:34,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 02:24:34,929 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 2 more)] === [2025-03-04 02:24:34,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 747317716, now seen corresponding path program 1 times [2025-03-04 02:24:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:34,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388710361] [2025-03-04 02:24:34,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:34,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 02:24:34,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 02:24:34,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:34,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 02:24:35,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:35,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388710361] [2025-03-04 02:24:35,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388710361] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:35,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:35,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:24:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597375882] [2025-03-04 02:24:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:35,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:24:35,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:35,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:24:35,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:24:35,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2025-03-04 02:24:35,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2025-03-04 02:24:35,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:35,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2025-03-04 02:24:35,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:37,073 INFO L124 PetriNetUnfolderBase]: 20127/28670 cut-off events. [2025-03-04 02:24:37,073 INFO L125 PetriNetUnfolderBase]: For 12593/12658 co-relation queries the response was YES. [2025-03-04 02:24:37,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67299 conditions, 28670 events. 20127/28670 cut-off events. For 12593/12658 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 182661 event pairs, 16535 based on Foata normal form. 0/27202 useless extension candidates. Maximal degree in co-relation 55830. Up to 25604 conditions per place. [2025-03-04 02:24:37,304 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 46 selfloop transitions, 7 changer transitions 34/95 dead transitions. [2025-03-04 02:24:37,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 543 flow [2025-03-04 02:24:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:24:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:24:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-04 02:24:37,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2025-03-04 02:24:37,305 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 292 flow. Second operand 6 states and 146 transitions. [2025-03-04 02:24:37,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 543 flow [2025-03-04 02:24:37,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 533 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-04 02:24:37,315 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 272 flow [2025-03-04 02:24:37,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2025-03-04 02:24:37,315 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2025-03-04 02:24:37,315 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 272 flow [2025-03-04 02:24:37,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2025-03-04 02:24:37,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:37,315 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:37,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 02:24:37,316 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 2 more)] === [2025-03-04 02:24:37,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:37,316 INFO L85 PathProgramCache]: Analyzing trace with hash 71317922, now seen corresponding path program 1 times [2025-03-04 02:24:37,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:37,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021685845] [2025-03-04 02:24:37,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:37,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:37,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 02:24:37,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 02:24:37,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:37,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 02:24:37,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021685845] [2025-03-04 02:24:37,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021685845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:37,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:37,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:24:37,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368034362] [2025-03-04 02:24:37,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:37,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:24:37,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:37,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:24:37,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:24:37,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:37,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2025-03-04 02:24:37,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:37,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:37,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:39,318 INFO L124 PetriNetUnfolderBase]: 16416/24213 cut-off events. [2025-03-04 02:24:39,319 INFO L125 PetriNetUnfolderBase]: For 12500/12500 co-relation queries the response was YES. [2025-03-04 02:24:39,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57179 conditions, 24213 events. 16416/24213 cut-off events. For 12500/12500 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 158153 event pairs, 4151 based on Foata normal form. 1169/25168 useless extension candidates. Maximal degree in co-relation 47585. Up to 11207 conditions per place. [2025-03-04 02:24:39,417 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 101 selfloop transitions, 11 changer transitions 8/129 dead transitions. [2025-03-04 02:24:39,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 743 flow [2025-03-04 02:24:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 02:24:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 02:24:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2025-03-04 02:24:39,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521978021978022 [2025-03-04 02:24:39,418 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 272 flow. Second operand 7 states and 190 transitions. [2025-03-04 02:24:39,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 743 flow [2025-03-04 02:24:39,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 129 transitions, 713 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-03-04 02:24:39,432 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 300 flow [2025-03-04 02:24:39,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2025-03-04 02:24:39,433 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2025-03-04 02:24:39,433 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 300 flow [2025-03-04 02:24:39,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2025-03-04 02:24:39,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:39,433 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:39,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 02:24:39,433 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 2 more)] === [2025-03-04 02:24:39,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2114117745, now seen corresponding path program 1 times [2025-03-04 02:24:39,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:39,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830544515] [2025-03-04 02:24:39,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:39,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:39,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 02:24:39,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 02:24:39,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:39,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 02:24:39,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:39,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830544515] [2025-03-04 02:24:39,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830544515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:39,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:39,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:24:39,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115640236] [2025-03-04 02:24:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:39,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:24:39,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:39,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:24:39,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:24:39,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:39,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2025-03-04 02:24:39,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:39,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:39,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:40,642 INFO L124 PetriNetUnfolderBase]: 11819/17061 cut-off events. [2025-03-04 02:24:40,642 INFO L125 PetriNetUnfolderBase]: For 16584/16598 co-relation queries the response was YES. [2025-03-04 02:24:40,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45970 conditions, 17061 events. 11819/17061 cut-off events. For 16584/16598 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 105482 event pairs, 928 based on Foata normal form. 612/17635 useless extension candidates. Maximal degree in co-relation 39743. Up to 9586 conditions per place. [2025-03-04 02:24:40,752 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 101 selfloop transitions, 5 changer transitions 4/119 dead transitions. [2025-03-04 02:24:40,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 119 transitions, 754 flow [2025-03-04 02:24:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:24:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:24:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2025-03-04 02:24:40,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2025-03-04 02:24:40,755 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 300 flow. Second operand 6 states and 158 transitions. [2025-03-04 02:24:40,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 119 transitions, 754 flow [2025-03-04 02:24:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 730 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-04 02:24:40,770 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 264 flow [2025-03-04 02:24:40,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2025-03-04 02:24:40,771 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2025-03-04 02:24:40,771 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 264 flow [2025-03-04 02:24:40,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2025-03-04 02:24:40,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:40,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:40,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 02:24:40,771 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 2 more)] === [2025-03-04 02:24:40,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:40,771 INFO L85 PathProgramCache]: Analyzing trace with hash 19184816, now seen corresponding path program 1 times [2025-03-04 02:24:40,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:40,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581009299] [2025-03-04 02:24:40,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:40,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:40,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 02:24:40,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 02:24:40,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:40,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 02:24:40,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:40,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581009299] [2025-03-04 02:24:40,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581009299] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:40,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:40,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:24:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474727865] [2025-03-04 02:24:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:40,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:24:40,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:40,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:24:40,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:24:40,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:40,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2025-03-04 02:24:40,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:40,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:40,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:42,794 INFO L124 PetriNetUnfolderBase]: 17964/24982 cut-off events. [2025-03-04 02:24:42,794 INFO L125 PetriNetUnfolderBase]: For 27283/27283 co-relation queries the response was YES. [2025-03-04 02:24:42,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70699 conditions, 24982 events. 17964/24982 cut-off events. For 27283/27283 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 146426 event pairs, 3525 based on Foata normal form. 413/25286 useless extension candidates. Maximal degree in co-relation 70666. Up to 8091 conditions per place. [2025-03-04 02:24:42,969 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 113 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2025-03-04 02:24:42,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 140 transitions, 848 flow [2025-03-04 02:24:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:24:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:24:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2025-03-04 02:24:42,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2025-03-04 02:24:42,970 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 264 flow. Second operand 6 states and 181 transitions. [2025-03-04 02:24:42,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 140 transitions, 848 flow [2025-03-04 02:24:42,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 809 flow, removed 9 selfloop flow, removed 6 redundant places. [2025-03-04 02:24:42,997 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 405 flow [2025-03-04 02:24:42,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=405, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2025-03-04 02:24:42,998 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2025-03-04 02:24:42,998 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 405 flow [2025-03-04 02:24:42,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2025-03-04 02:24:42,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:42,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:42,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 02:24:42,998 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 2 more)] === [2025-03-04 02:24:42,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash -545328756, now seen corresponding path program 1 times [2025-03-04 02:24:42,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723987466] [2025-03-04 02:24:42,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:43,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 02:24:43,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 02:24:43,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:43,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 02:24:43,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:43,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723987466] [2025-03-04 02:24:43,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723987466] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:24:43,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428162994] [2025-03-04 02:24:43,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:43,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:24:43,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:24:43,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:24:43,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 02:24:43,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 02:24:43,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 02:24:43,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:43,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:43,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 02:24:43,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:24:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 02:24:43,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:24:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 02:24:43,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428162994] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-04 02:24:43,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-04 02:24:43,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 17 [2025-03-04 02:24:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294091544] [2025-03-04 02:24:43,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:43,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 02:24:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:43,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 02:24:43,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2025-03-04 02:24:43,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2025-03-04 02:24:43,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 405 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2025-03-04 02:24:43,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:43,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2025-03-04 02:24:43,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:47,384 INFO L124 PetriNetUnfolderBase]: 34363/46181 cut-off events. [2025-03-04 02:24:47,384 INFO L125 PetriNetUnfolderBase]: For 89345/89345 co-relation queries the response was YES. [2025-03-04 02:24:47,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140248 conditions, 46181 events. 34363/46181 cut-off events. For 89345/89345 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 265740 event pairs, 2439 based on Foata normal form. 0/44670 useless extension candidates. Maximal degree in co-relation 140213. Up to 17898 conditions per place. [2025-03-04 02:24:47,788 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 202 selfloop transitions, 23 changer transitions 2/234 dead transitions. [2025-03-04 02:24:47,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 234 transitions, 1837 flow [2025-03-04 02:24:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 02:24:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 02:24:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2025-03-04 02:24:47,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46503496503496505 [2025-03-04 02:24:47,789 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 405 flow. Second operand 11 states and 266 transitions. [2025-03-04 02:24:47,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 234 transitions, 1837 flow [2025-03-04 02:24:47,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 234 transitions, 1822 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-04 02:24:47,862 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 613 flow [2025-03-04 02:24:47,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=613, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2025-03-04 02:24:47,862 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2025-03-04 02:24:47,862 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 613 flow [2025-03-04 02:24:47,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2025-03-04 02:24:47,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:47,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:47,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 02:24:48,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-04 02:24:48,064 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 2 more)] === [2025-03-04 02:24:48,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash 825417968, now seen corresponding path program 2 times [2025-03-04 02:24:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:48,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856429455] [2025-03-04 02:24:48,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:24:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:48,077 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 02:24:48,090 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 44 statements. [2025-03-04 02:24:48,090 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 02:24:48,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 02:24:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:48,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856429455] [2025-03-04 02:24:48,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856429455] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:24:48,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:24:48,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:24:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916770898] [2025-03-04 02:24:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:24:48,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:24:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:24:48,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:24:48,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:24:48,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-04 02:24:48,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 613 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2025-03-04 02:24:48,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:24:48,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-04 02:24:48,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:24:53,402 INFO L124 PetriNetUnfolderBase]: 45761/63627 cut-off events. [2025-03-04 02:24:53,402 INFO L125 PetriNetUnfolderBase]: For 213295/213322 co-relation queries the response was YES. [2025-03-04 02:24:53,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237179 conditions, 63627 events. 45761/63627 cut-off events. For 213295/213322 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 412057 event pairs, 7582 based on Foata normal form. 1135/63958 useless extension candidates. Maximal degree in co-relation 237136. Up to 20966 conditions per place. [2025-03-04 02:24:53,951 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 207 selfloop transitions, 15 changer transitions 0/233 dead transitions. [2025-03-04 02:24:53,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 233 transitions, 2112 flow [2025-03-04 02:24:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:24:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:24:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2025-03-04 02:24:53,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2025-03-04 02:24:53,952 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 613 flow. Second operand 6 states and 185 transitions. [2025-03-04 02:24:53,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 233 transitions, 2112 flow [2025-03-04 02:24:54,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 233 transitions, 2078 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-03-04 02:24:54,113 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 728 flow [2025-03-04 02:24:54,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=728, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2025-03-04 02:24:54,113 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2025-03-04 02:24:54,114 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 728 flow [2025-03-04 02:24:54,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2025-03-04 02:24:54,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:24:54,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:24:54,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 02:24:54,114 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 2 more)] === [2025-03-04 02:24:54,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:24:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1153721355, now seen corresponding path program 1 times [2025-03-04 02:24:54,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:24:54,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716311469] [2025-03-04 02:24:54,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:24:54,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-04 02:24:54,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-04 02:24:54,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:54,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:24:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:24:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716311469] [2025-03-04 02:24:56,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716311469] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:24:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739584133] [2025-03-04 02:24:56,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:24:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:24:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:24:56,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:24:56,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 02:24:56,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-04 02:24:56,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-04 02:24:56,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:24:56,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:24:56,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-04 02:24:56,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:24:56,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 02:24:56,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 02:24:56,519 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-03-04 02:24:56,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-03-04 02:24:56,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-04 02:24:56,622 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 02:24:56,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-03-04 02:24:56,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-04 02:24:57,211 INFO L349 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2025-03-04 02:24:57,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 46 [2025-03-04 02:24:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:24:57,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:24:58,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 02:24:58,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 113 [2025-03-04 02:24:58,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 02:24:58,364 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 3554 treesize of output 3294 [2025-03-04 02:24:58,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 02:24:58,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1138 treesize of output 1066 [2025-03-04 02:24:58,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 02:24:58,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 850 treesize of output 922