./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 09:41:15,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 09:41:15,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 09:41:15,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 09:41:15,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 09:41:15,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 09:41:15,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 09:41:15,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 09:41:15,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 09:41:15,472 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 09:41:15,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 09:41:15,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 09:41:15,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 09:41:15,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 09:41:15,474 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 09:41:15,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 09:41:15,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 09:41:15,474 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 09:41:15,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 09:41:15,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 09:41:15,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 09:41:15,475 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:41:15,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:41:15,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:41:15,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 09:41:15,476 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f [2025-01-09 09:41:15,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 09:41:15,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 09:41:15,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 09:41:15,708 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 09:41:15,708 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 09:41:15,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2025-01-09 09:41:16,801 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e5c54ac4e/9ac01614c2ce43ddb411340ed230b156/FLAG0c0e20b1c [2025-01-09 09:41:17,074 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 09:41:17,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2025-01-09 09:41:17,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e5c54ac4e/9ac01614c2ce43ddb411340ed230b156/FLAG0c0e20b1c [2025-01-09 09:41:17,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e5c54ac4e/9ac01614c2ce43ddb411340ed230b156 [2025-01-09 09:41:17,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 09:41:17,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 09:41:17,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 09:41:17,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 09:41:17,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 09:41:17,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf32be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17, skipping insertion in model container [2025-01-09 09:41:17,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 09:41:17,492 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i[916,929] [2025-01-09 09:41:17,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:41:17,618 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 09:41:17,629 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i[916,929] [2025-01-09 09:41:17,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:41:17,710 INFO L204 MainTranslator]: Completed translation [2025-01-09 09:41:17,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17 WrapperNode [2025-01-09 09:41:17,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 09:41:17,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 09:41:17,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 09:41:17,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 09:41:17,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,780 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 550 [2025-01-09 09:41:17,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 09:41:17,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 09:41:17,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 09:41:17,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 09:41:17,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,829 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 09:41:17,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,847 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 09:41:17,883 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 09:41:17,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 09:41:17,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 09:41:17,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (1/1) ... [2025-01-09 09:41:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:41:17,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:41:17,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 09:41:17,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 09:41:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 09:41:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 09:41:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 09:41:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 09:41:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 09:41:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 09:41:18,014 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 09:41:18,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 09:41:18,705 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-01-09 09:41:18,705 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 09:41:18,718 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 09:41:18,718 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 09:41:18,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:41:18 BoogieIcfgContainer [2025-01-09 09:41:18,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 09:41:18,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 09:41:18,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 09:41:18,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 09:41:18,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:41:17" (1/3) ... [2025-01-09 09:41:18,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78abddd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:41:18, skipping insertion in model container [2025-01-09 09:41:18,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:41:17" (2/3) ... [2025-01-09 09:41:18,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78abddd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:41:18, skipping insertion in model container [2025-01-09 09:41:18,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:41:18" (3/3) ... [2025-01-09 09:41:18,727 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2025-01-09 09:41:18,741 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 09:41:18,743 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i that has 2 procedures, 228 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 09:41:18,796 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 09:41:18,807 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;@72bbebe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 09:41:18,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 09:41:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 149 states have (on average 1.5503355704697988) internal successors, (231), 150 states have internal predecessors, (231), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-01-09 09:41:18,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:18,831 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:18,832 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:18,833 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:18,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash 923943135, now seen corresponding path program 1 times [2025-01-09 09:41:18,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:18,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638596579] [2025-01-09 09:41:18,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:18,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:18,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:18,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:19,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:19,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2025-01-09 09:41:19,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:19,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638596579] [2025-01-09 09:41:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638596579] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:41:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696072497] [2025-01-09 09:41:19,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:19,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:41:19,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:41:19,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 09:41:19,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 09:41:19,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:19,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:19,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:19,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:19,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 09:41:19,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:41:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2025-01-09 09:41:19,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 09:41:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696072497] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:41:19,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 09:41:19,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 09:41:19,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11962000] [2025-01-09 09:41:19,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:41:19,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 09:41:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:19,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 09:41:19,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:41:19,616 INFO L87 Difference]: Start difference. First operand has 228 states, 149 states have (on average 1.5503355704697988) internal successors, (231), 150 states have internal predecessors, (231), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2025-01-09 09:41:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:19,655 INFO L93 Difference]: Finished difference Result 450 states and 837 transitions. [2025-01-09 09:41:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 09:41:19,657 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 471 [2025-01-09 09:41:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:19,663 INFO L225 Difference]: With dead ends: 450 [2025-01-09 09:41:19,663 INFO L226 Difference]: Without dead ends: 225 [2025-01-09 09:41:19,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:41:19,670 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:19,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:41:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-01-09 09:41:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2025-01-09 09:41:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 147 states have (on average 1.530612244897959) internal successors, (225), 147 states have internal predecessors, (225), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-01-09 09:41:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 377 transitions. [2025-01-09 09:41:19,728 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 377 transitions. Word has length 471 [2025-01-09 09:41:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:19,728 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 377 transitions. [2025-01-09 09:41:19,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2025-01-09 09:41:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 377 transitions. [2025-01-09 09:41:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:19,740 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:19,740 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:19,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 09:41:19,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 09:41:19,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:19,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:19,942 INFO L85 PathProgramCache]: Analyzing trace with hash 93291435, now seen corresponding path program 1 times [2025-01-09 09:41:19,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:19,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201536863] [2025-01-09 09:41:19,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:19,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:19,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:20,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:20,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:20,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:41:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201536863] [2025-01-09 09:41:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201536863] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:41:20,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:41:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 09:41:20,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729343574] [2025-01-09 09:41:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:41:20,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 09:41:20,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:20,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 09:41:20,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:41:20,394 INFO L87 Difference]: Start difference. First operand 225 states and 377 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:20,469 INFO L93 Difference]: Finished difference Result 579 states and 974 transitions. [2025-01-09 09:41:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:41:20,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2025-01-09 09:41:20,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:20,477 INFO L225 Difference]: With dead ends: 579 [2025-01-09 09:41:20,478 INFO L226 Difference]: Without dead ends: 357 [2025-01-09 09:41:20,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:41:20,480 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 228 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:20,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 851 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:41:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2025-01-09 09:41:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2025-01-09 09:41:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 245 states have (on average 1.5591836734693878) internal successors, (382), 246 states have internal predecessors, (382), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2025-01-09 09:41:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 594 transitions. [2025-01-09 09:41:20,528 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 594 transitions. Word has length 471 [2025-01-09 09:41:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:20,530 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 594 transitions. [2025-01-09 09:41:20,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:20,530 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 594 transitions. [2025-01-09 09:41:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:20,536 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:20,536 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:20,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 09:41:20,537 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:20,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash 341437929, now seen corresponding path program 1 times [2025-01-09 09:41:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162306974] [2025-01-09 09:41:20,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:20,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:20,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:20,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:20,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:41:21,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:21,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162306974] [2025-01-09 09:41:21,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162306974] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:41:21,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:41:21,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 09:41:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608744395] [2025-01-09 09:41:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:41:21,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 09:41:21,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:21,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 09:41:21,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 09:41:21,308 INFO L87 Difference]: Start difference. First operand 354 states and 594 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:22,831 INFO L93 Difference]: Finished difference Result 1781 states and 2975 transitions. [2025-01-09 09:41:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 09:41:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2025-01-09 09:41:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:22,845 INFO L225 Difference]: With dead ends: 1781 [2025-01-09 09:41:22,846 INFO L226 Difference]: Without dead ends: 1430 [2025-01-09 09:41:22,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-01-09 09:41:22,850 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 1543 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:22,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1497 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 09:41:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2025-01-09 09:41:22,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1222. [2025-01-09 09:41:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 845 states have (on average 1.5396449704142012) internal successors, (1301), 851 states have internal predecessors, (1301), 367 states have call successors, (367), 9 states have call predecessors, (367), 9 states have return successors, (367), 361 states have call predecessors, (367), 367 states have call successors, (367) [2025-01-09 09:41:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2035 transitions. [2025-01-09 09:41:22,989 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2035 transitions. Word has length 471 [2025-01-09 09:41:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:22,991 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 2035 transitions. [2025-01-09 09:41:22,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2035 transitions. [2025-01-09 09:41:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:22,995 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:22,996 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:22,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 09:41:22,996 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:22,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1347505813, now seen corresponding path program 1 times [2025-01-09 09:41:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362739791] [2025-01-09 09:41:22,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:23,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:23,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:23,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:23,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:41:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362739791] [2025-01-09 09:41:23,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362739791] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:41:23,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:41:23,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 09:41:23,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648093260] [2025-01-09 09:41:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:41:23,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 09:41:23,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:23,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 09:41:23,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 09:41:23,497 INFO L87 Difference]: Start difference. First operand 1222 states and 2035 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:25,555 INFO L93 Difference]: Finished difference Result 8358 states and 13928 transitions. [2025-01-09 09:41:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 09:41:25,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2025-01-09 09:41:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:25,593 INFO L225 Difference]: With dead ends: 8358 [2025-01-09 09:41:25,593 INFO L226 Difference]: Without dead ends: 7139 [2025-01-09 09:41:25,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-01-09 09:41:25,601 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 2066 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:25,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 1797 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-09 09:41:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7139 states. [2025-01-09 09:41:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7139 to 2950. [2025-01-09 09:41:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2122 states have (on average 1.5655042412818096) internal successors, (3322), 2136 states have internal predecessors, (3322), 807 states have call successors, (807), 20 states have call predecessors, (807), 20 states have return successors, (807), 793 states have call predecessors, (807), 807 states have call successors, (807) [2025-01-09 09:41:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 4936 transitions. [2025-01-09 09:41:25,932 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 4936 transitions. Word has length 471 [2025-01-09 09:41:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:25,934 INFO L471 AbstractCegarLoop]: Abstraction has 2950 states and 4936 transitions. [2025-01-09 09:41:25,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 4936 transitions. [2025-01-09 09:41:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:25,941 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:25,941 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:25,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 09:41:25,942 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:25,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 560292647, now seen corresponding path program 1 times [2025-01-09 09:41:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:25,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858069874] [2025-01-09 09:41:25,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:25,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:25,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:26,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:26,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:26,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:41:26,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:26,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858069874] [2025-01-09 09:41:26,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858069874] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:41:26,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:41:26,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 09:41:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179994288] [2025-01-09 09:41:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:41:26,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 09:41:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:26,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 09:41:26,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 09:41:26,225 INFO L87 Difference]: Start difference. First operand 2950 states and 4936 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:28,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:28,294 INFO L93 Difference]: Finished difference Result 11763 states and 19604 transitions. [2025-01-09 09:41:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 09:41:28,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2025-01-09 09:41:28,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:28,336 INFO L225 Difference]: With dead ends: 11763 [2025-01-09 09:41:28,336 INFO L226 Difference]: Without dead ends: 8816 [2025-01-09 09:41:28,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-01-09 09:41:28,345 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 1930 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:28,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 2126 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-09 09:41:28,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8816 states. [2025-01-09 09:41:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8816 to 5376. [2025-01-09 09:41:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 3779 states have (on average 1.545117756020111) internal successors, (5839), 3809 states have internal predecessors, (5839), 1557 states have call successors, (1557), 39 states have call predecessors, (1557), 39 states have return successors, (1557), 1527 states have call predecessors, (1557), 1557 states have call successors, (1557) [2025-01-09 09:41:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 8953 transitions. [2025-01-09 09:41:28,895 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 8953 transitions. Word has length 471 [2025-01-09 09:41:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:28,896 INFO L471 AbstractCegarLoop]: Abstraction has 5376 states and 8953 transitions. [2025-01-09 09:41:28,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 8953 transitions. [2025-01-09 09:41:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:28,904 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:28,904 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:28,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 09:41:28,905 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:28,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:28,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1128651095, now seen corresponding path program 1 times [2025-01-09 09:41:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:28,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482615765] [2025-01-09 09:41:28,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:28,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:28,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:29,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:29,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:29,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:41:29,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:29,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482615765] [2025-01-09 09:41:29,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482615765] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:41:29,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:41:29,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 09:41:29,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383198325] [2025-01-09 09:41:29,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:41:29,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 09:41:29,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:29,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 09:41:29,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:41:29,219 INFO L87 Difference]: Start difference. First operand 5376 states and 8953 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:29,476 INFO L93 Difference]: Finished difference Result 10787 states and 17979 transitions. [2025-01-09 09:41:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:41:29,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2025-01-09 09:41:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:29,513 INFO L225 Difference]: With dead ends: 10787 [2025-01-09 09:41:29,514 INFO L226 Difference]: Without dead ends: 5414 [2025-01-09 09:41:29,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:41:29,530 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 0 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:29,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 746 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:41:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2025-01-09 09:41:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 5414. [2025-01-09 09:41:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 3817 states have (on average 1.5396908566937386) internal successors, (5877), 3847 states have internal predecessors, (5877), 1557 states have call successors, (1557), 39 states have call predecessors, (1557), 39 states have return successors, (1557), 1527 states have call predecessors, (1557), 1557 states have call successors, (1557) [2025-01-09 09:41:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8991 transitions. [2025-01-09 09:41:29,909 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8991 transitions. Word has length 471 [2025-01-09 09:41:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:29,910 INFO L471 AbstractCegarLoop]: Abstraction has 5414 states and 8991 transitions. [2025-01-09 09:41:29,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8991 transitions. [2025-01-09 09:41:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:29,916 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:29,916 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:29,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 09:41:29,916 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:29,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash -988102485, now seen corresponding path program 1 times [2025-01-09 09:41:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:29,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653049149] [2025-01-09 09:41:29,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:29,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:29,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:29,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:29,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:41:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653049149] [2025-01-09 09:41:30,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653049149] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:41:30,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:41:30,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:41:30,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141685705] [2025-01-09 09:41:30,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:41:30,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:41:30,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:30,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:41:30,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:41:30,349 INFO L87 Difference]: Start difference. First operand 5414 states and 8991 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:31,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:31,314 INFO L93 Difference]: Finished difference Result 18408 states and 30652 transitions. [2025-01-09 09:41:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:41:31,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2025-01-09 09:41:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:31,361 INFO L225 Difference]: With dead ends: 18408 [2025-01-09 09:41:31,362 INFO L226 Difference]: Without dead ends: 12997 [2025-01-09 09:41:31,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:41:31,382 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 759 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:31,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1128 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 09:41:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12997 states. [2025-01-09 09:41:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12997 to 12987. [2025-01-09 09:41:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12987 states, 9368 states have (on average 1.5437660119555936) internal successors, (14462), 9440 states have internal predecessors, (14462), 3528 states have call successors, (3528), 90 states have call predecessors, (3528), 90 states have return successors, (3528), 3456 states have call predecessors, (3528), 3528 states have call successors, (3528) [2025-01-09 09:41:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12987 states to 12987 states and 21518 transitions. [2025-01-09 09:41:32,163 INFO L78 Accepts]: Start accepts. Automaton has 12987 states and 21518 transitions. Word has length 471 [2025-01-09 09:41:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:32,164 INFO L471 AbstractCegarLoop]: Abstraction has 12987 states and 21518 transitions. [2025-01-09 09:41:32,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:41:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12987 states and 21518 transitions. [2025-01-09 09:41:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-01-09 09:41:32,172 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:32,173 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:32,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 09:41:32,173 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:32,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash -565400659, now seen corresponding path program 1 times [2025-01-09 09:41:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:32,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181211743] [2025-01-09 09:41:32,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:32,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:32,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:32,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:32,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 69 proven. 156 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2025-01-09 09:41:32,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181211743] [2025-01-09 09:41:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181211743] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:41:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529996236] [2025-01-09 09:41:32,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:32,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:41:32,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:41:32,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 09:41:32,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 09:41:32,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-01-09 09:41:32,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-01-09 09:41:32,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:32,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:32,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 09:41:32,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:41:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5393 proven. 156 refuted. 0 times theorem prover too weak. 5851 trivial. 0 not checked. [2025-01-09 09:41:33,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:41:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 69 proven. 156 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2025-01-09 09:41:34,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529996236] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 09:41:34,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 09:41:34,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-01-09 09:41:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203788301] [2025-01-09 09:41:34,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 09:41:34,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 09:41:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:34,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 09:41:34,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-01-09 09:41:34,060 INFO L87 Difference]: Start difference. First operand 12987 states and 21518 transitions. Second operand has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 6 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (212), 6 states have call predecessors, (212), 6 states have call successors, (212) [2025-01-09 09:41:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:35,326 INFO L93 Difference]: Finished difference Result 26487 states and 43465 transitions. [2025-01-09 09:41:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 09:41:35,327 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 6 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (212), 6 states have call predecessors, (212), 6 states have call successors, (212) Word has length 471 [2025-01-09 09:41:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:35,375 INFO L225 Difference]: With dead ends: 26487 [2025-01-09 09:41:35,376 INFO L226 Difference]: Without dead ends: 13503 [2025-01-09 09:41:35,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2025-01-09 09:41:35,402 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 177 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:35,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1145 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 09:41:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13503 states. [2025-01-09 09:41:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13503 to 13323. [2025-01-09 09:41:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13323 states, 9620 states have (on average 1.5207900207900207) internal successors, (14630), 9692 states have internal predecessors, (14630), 3528 states have call successors, (3528), 174 states have call predecessors, (3528), 174 states have return successors, (3528), 3456 states have call predecessors, (3528), 3528 states have call successors, (3528) [2025-01-09 09:41:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13323 states to 13323 states and 21686 transitions. [2025-01-09 09:41:36,278 INFO L78 Accepts]: Start accepts. Automaton has 13323 states and 21686 transitions. Word has length 471 [2025-01-09 09:41:36,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:41:36,279 INFO L471 AbstractCegarLoop]: Abstraction has 13323 states and 21686 transitions. [2025-01-09 09:41:36,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 6 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (212), 6 states have call predecessors, (212), 6 states have call successors, (212) [2025-01-09 09:41:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 13323 states and 21686 transitions. [2025-01-09 09:41:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2025-01-09 09:41:36,288 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:41:36,288 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:41:36,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 09:41:36,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:41:36,489 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:41:36,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:41:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash 739434257, now seen corresponding path program 1 times [2025-01-09 09:41:36,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:41:36,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168170380] [2025-01-09 09:41:36,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:41:36,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 472 statements into 1 equivalence classes. [2025-01-09 09:41:36,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 472 of 472 statements. [2025-01-09 09:41:36,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:36,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 138 proven. 87 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2025-01-09 09:41:37,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:41:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168170380] [2025-01-09 09:41:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168170380] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:41:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284956420] [2025-01-09 09:41:37,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:41:37,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:41:37,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:41:37,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 09:41:37,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 09:41:37,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 472 statements into 1 equivalence classes. [2025-01-09 09:41:37,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 472 of 472 statements. [2025-01-09 09:41:37,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:41:37,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:41:37,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 09:41:37,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:41:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5503 proven. 87 refuted. 0 times theorem prover too weak. 5810 trivial. 0 not checked. [2025-01-09 09:41:38,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 09:41:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 138 proven. 87 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2025-01-09 09:41:38,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284956420] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 09:41:38,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 09:41:38,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2025-01-09 09:41:38,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988267908] [2025-01-09 09:41:38,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 09:41:38,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 09:41:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:41:38,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 09:41:38,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2025-01-09 09:41:38,687 INFO L87 Difference]: Start difference. First operand 13323 states and 21686 transitions. Second operand has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2025-01-09 09:41:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:41:57,619 INFO L93 Difference]: Finished difference Result 123217 states and 197974 transitions. [2025-01-09 09:41:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2025-01-09 09:41:57,620 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) Word has length 472 [2025-01-09 09:41:57,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:41:58,040 INFO L225 Difference]: With dead ends: 123217 [2025-01-09 09:41:58,041 INFO L226 Difference]: Without dead ends: 108559 [2025-01-09 09:41:58,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 952 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4149 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2917, Invalid=9965, Unknown=0, NotChecked=0, Total=12882 [2025-01-09 09:41:58,114 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 7868 mSDsluCounter, 6294 mSDsCounter, 0 mSdLazyCounter, 6842 mSolverCounterSat, 4634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7913 SdHoareTripleChecker+Valid, 7068 SdHoareTripleChecker+Invalid, 11476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4634 IncrementalHoareTripleChecker+Valid, 6842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2025-01-09 09:41:58,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7913 Valid, 7068 Invalid, 11476 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4634 Valid, 6842 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2025-01-09 09:41:58,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108559 states. [2025-01-09 09:42:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108559 to 37785. [2025-01-09 09:42:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37785 states, 28790 states have (on average 1.5465786731503994) internal successors, (44526), 28984 states have internal predecessors, (44526), 8438 states have call successors, (8438), 556 states have call predecessors, (8438), 556 states have return successors, (8438), 8244 states have call predecessors, (8438), 8438 states have call successors, (8438) [2025-01-09 09:42:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37785 states to 37785 states and 61402 transitions. [2025-01-09 09:42:03,413 INFO L78 Accepts]: Start accepts. Automaton has 37785 states and 61402 transitions. Word has length 472 [2025-01-09 09:42:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:42:03,414 INFO L471 AbstractCegarLoop]: Abstraction has 37785 states and 61402 transitions. [2025-01-09 09:42:03,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2025-01-09 09:42:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand 37785 states and 61402 transitions. [2025-01-09 09:42:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2025-01-09 09:42:03,437 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:42:03,437 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:42:03,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 09:42:03,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:42:03,638 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:42:03,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:42:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 699505425, now seen corresponding path program 1 times [2025-01-09 09:42:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:42:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487721988] [2025-01-09 09:42:03,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:42:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:42:03,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 472 statements into 1 equivalence classes. [2025-01-09 09:42:03,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 472 of 472 statements. [2025-01-09 09:42:03,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:42:03,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:42:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:42:03,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:42:03,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487721988] [2025-01-09 09:42:03,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487721988] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:42:03,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:42:03,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:42:03,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249182704] [2025-01-09 09:42:03,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:42:03,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:42:03,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:42:03,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:42:03,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:42:03,956 INFO L87 Difference]: Start difference. First operand 37785 states and 61402 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:42:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:42:10,780 INFO L93 Difference]: Finished difference Result 106187 states and 172265 transitions. [2025-01-09 09:42:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:42:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 472 [2025-01-09 09:42:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:42:11,000 INFO L225 Difference]: With dead ends: 106187 [2025-01-09 09:42:11,000 INFO L226 Difference]: Without dead ends: 68405 [2025-01-09 09:42:11,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:42:11,076 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 488 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 09:42:11,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1564 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 09:42:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68405 states. [2025-01-09 09:42:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68405 to 68249. [2025-01-09 09:42:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68249 states, 50830 states have (on average 1.5315364941963407) internal successors, (77848), 51208 states have internal predecessors, (77848), 16342 states have call successors, (16342), 1076 states have call predecessors, (16342), 1076 states have return successors, (16342), 15964 states have call predecessors, (16342), 16342 states have call successors, (16342) [2025-01-09 09:42:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68249 states to 68249 states and 110532 transitions. [2025-01-09 09:42:18,019 INFO L78 Accepts]: Start accepts. Automaton has 68249 states and 110532 transitions. Word has length 472 [2025-01-09 09:42:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:42:18,020 INFO L471 AbstractCegarLoop]: Abstraction has 68249 states and 110532 transitions. [2025-01-09 09:42:18,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:42:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 68249 states and 110532 transitions. [2025-01-09 09:42:18,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2025-01-09 09:42:18,046 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:42:18,046 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:42:18,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 09:42:18,046 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:42:18,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:42:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1326447983, now seen corresponding path program 1 times [2025-01-09 09:42:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:42:18,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113132894] [2025-01-09 09:42:18,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:42:18,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:42:18,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 472 statements into 1 equivalence classes. [2025-01-09 09:42:18,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 472 of 472 statements. [2025-01-09 09:42:18,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:42:18,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:42:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-01-09 09:42:18,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:42:18,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113132894] [2025-01-09 09:42:18,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113132894] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:42:18,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:42:18,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 09:42:18,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246589220] [2025-01-09 09:42:18,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:42:18,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 09:42:18,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:42:18,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 09:42:18,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 09:42:18,289 INFO L87 Difference]: Start difference. First operand 68249 states and 110532 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-01-09 09:42:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:42:37,789 INFO L93 Difference]: Finished difference Result 247703 states and 397209 transitions. [2025-01-09 09:42:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 09:42:37,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 472 [2025-01-09 09:42:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:42:38,347 INFO L225 Difference]: With dead ends: 247703 [2025-01-09 09:42:38,347 INFO L226 Difference]: Without dead ends: 177297 [2025-01-09 09:42:38,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-09 09:42:38,513 INFO L435 NwaCegarLoop]: 572 mSDtfsCounter, 931 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 09:42:38,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2264 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 09:42:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177297 states.