./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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-100_file-10.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 1a0ae75f5f463a17182a89879ce4658fe5861ec9a86c60f6d3e9ad481b43e0d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 21:07:16,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 21:07:16,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 21:07:16,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 21:07:16,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 21:07:16,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 21:07:16,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 21:07:16,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 21:07:16,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 21:07:16,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 21:07:16,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 21:07:16,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 21:07:16,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 21:07:16,761 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 21:07:16,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:07:16,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 21:07:16,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 21:07:16,763 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 -> 1a0ae75f5f463a17182a89879ce4658fe5861ec9a86c60f6d3e9ad481b43e0d3 [2025-02-05 21:07:17,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 21:07:17,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 21:07:17,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 21:07:17,021 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 21:07:17,021 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 21:07:17,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2025-02-05 21:07:18,192 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa82dc4a2/1f5c613d856d4231a895e60fba185ee2/FLAG68936562e [2025-02-05 21:07:18,468 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 21:07:18,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2025-02-05 21:07:18,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa82dc4a2/1f5c613d856d4231a895e60fba185ee2/FLAG68936562e [2025-02-05 21:07:18,493 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa82dc4a2/1f5c613d856d4231a895e60fba185ee2 [2025-02-05 21:07:18,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 21:07:18,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 21:07:18,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 21:07:18,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 21:07:18,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 21:07:18,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14837426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18, skipping insertion in model container [2025-02-05 21:07:18,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 21:07:18,622 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-100_file-10.i[916,929] [2025-02-05 21:07:18,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:07:18,709 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 21:07:18,719 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-100_file-10.i[916,929] [2025-02-05 21:07:18,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:07:18,766 INFO L204 MainTranslator]: Completed translation [2025-02-05 21:07:18,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18 WrapperNode [2025-02-05 21:07:18,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 21:07:18,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 21:07:18,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 21:07:18,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 21:07:18,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,804 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 340 [2025-02-05 21:07:18,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 21:07:18,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 21:07:18,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 21:07:18,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 21:07:18,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,828 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]. [2025-02-05 21:07:18,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,836 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 21:07:18,844 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 21:07:18,844 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 21:07:18,844 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 21:07:18,845 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (1/1) ... [2025-02-05 21:07:18,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:07:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:07:18,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 21:07:18,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 21:07:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 21:07:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 21:07:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 21:07:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 21:07:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 21:07:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 21:07:18,952 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 21:07:18,953 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 21:07:19,417 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L272: havoc property_#t~bitwise36#1;havoc property_#t~ite38#1;havoc property_#t~bitwise37#1;havoc property_#t~short39#1; [2025-02-05 21:07:19,456 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-02-05 21:07:19,456 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 21:07:19,483 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 21:07:19,483 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 21:07:19,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:07:19 BoogieIcfgContainer [2025-02-05 21:07:19,483 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 21:07:19,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 21:07:19,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 21:07:19,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 21:07:19,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:07:18" (1/3) ... [2025-02-05 21:07:19,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60973aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:07:19, skipping insertion in model container [2025-02-05 21:07:19,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:07:18" (2/3) ... [2025-02-05 21:07:19,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60973aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:07:19, skipping insertion in model container [2025-02-05 21:07:19,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:07:19" (3/3) ... [2025-02-05 21:07:19,496 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2025-02-05 21:07:19,506 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 21:07:19,508 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-10.i that has 2 procedures, 149 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 21:07:19,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 21:07:19,570 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;@79792f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 21:07:19,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 21:07:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 97 states have (on average 1.4536082474226804) internal successors, (141), 98 states have internal predecessors, (141), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-05 21:07:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-02-05 21:07:19,592 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:07:19,592 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:07:19,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:07:19,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:07:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1313247266, now seen corresponding path program 1 times [2025-02-05 21:07:19,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:07:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797319063] [2025-02-05 21:07:19,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:07:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:07:19,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-02-05 21:07:19,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-02-05 21:07:19,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:07:19,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:07:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-02-05 21:07:20,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:07:20,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797319063] [2025-02-05 21:07:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797319063] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:07:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079623169] [2025-02-05 21:07:20,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:07:20,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:07:20,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:07:20,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 21:07:20,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 21:07:20,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-02-05 21:07:20,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-02-05 21:07:20,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:07:20,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:07:20,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 21:07:20,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:07:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-02-05 21:07:20,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 21:07:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079623169] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:07:20,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 21:07:20,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 21:07:20,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530576761] [2025-02-05 21:07:20,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:07:20,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 21:07:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:07:20,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 21:07:20,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:07:20,270 INFO L87 Difference]: Start difference. First operand has 149 states, 97 states have (on average 1.4536082474226804) internal successors, (141), 98 states have internal predecessors, (141), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-05 21:07:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:07:20,307 INFO L93 Difference]: Finished difference Result 292 states and 522 transitions. [2025-02-05 21:07:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 21:07:20,309 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 309 [2025-02-05 21:07:20,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:07:20,314 INFO L225 Difference]: With dead ends: 292 [2025-02-05 21:07:20,314 INFO L226 Difference]: Without dead ends: 146 [2025-02-05 21:07:20,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:07:20,318 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:07:20,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 21:07:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-02-05 21:07:20,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-02-05 21:07:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 95 states have (on average 1.431578947368421) internal successors, (136), 95 states have internal predecessors, (136), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-05 21:07:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 234 transitions. [2025-02-05 21:07:20,359 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 234 transitions. Word has length 309 [2025-02-05 21:07:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:07:20,361 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 234 transitions. [2025-02-05 21:07:20,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-05 21:07:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 234 transitions. [2025-02-05 21:07:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-02-05 21:07:20,367 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:07:20,367 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:07:20,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 21:07:20,568 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 [2025-02-05 21:07:20,569 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:07:20,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:07:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 621173189, now seen corresponding path program 1 times [2025-02-05 21:07:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:07:20,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856437300] [2025-02-05 21:07:20,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:07:20,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:07:20,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-02-05 21:07:20,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-02-05 21:07:20,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:07:20,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:07:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-05 21:07:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:07:20,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856437300] [2025-02-05 21:07:20,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856437300] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:07:20,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:07:20,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 21:07:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823477479] [2025-02-05 21:07:20,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:07:20,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 21:07:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:07:20,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 21:07:20,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 21:07:20,873 INFO L87 Difference]: Start difference. First operand 146 states and 234 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:07:20,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:07:20,938 INFO L93 Difference]: Finished difference Result 390 states and 625 transitions. [2025-02-05 21:07:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 21:07:20,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 309 [2025-02-05 21:07:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:07:20,942 INFO L225 Difference]: With dead ends: 390 [2025-02-05 21:07:20,942 INFO L226 Difference]: Without dead ends: 247 [2025-02-05 21:07:20,944 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 [2025-02-05 21:07:20,945 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 160 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:07:20,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 519 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 21:07:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2025-02-05 21:07:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2025-02-05 21:07:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 166 states have (on average 1.4518072289156627) internal successors, (241), 167 states have internal predecessors, (241), 75 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2025-02-05 21:07:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 391 transitions. [2025-02-05 21:07:20,981 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 391 transitions. Word has length 309 [2025-02-05 21:07:20,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:07:20,983 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 391 transitions. [2025-02-05 21:07:20,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:07:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 391 transitions. [2025-02-05 21:07:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-02-05 21:07:20,987 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:07:20,987 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:07:20,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 21:07:20,988 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:07:20,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:07:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1325591013, now seen corresponding path program 1 times [2025-02-05 21:07:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:07:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838463310] [2025-02-05 21:07:20,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:07:20,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:07:21,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-02-05 21:07:21,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-02-05 21:07:21,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:07:21,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:07:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-05 21:07:21,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:07:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838463310] [2025-02-05 21:07:21,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838463310] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:07:21,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:07:21,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 21:07:21,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70222575] [2025-02-05 21:07:21,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:07:21,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 21:07:21,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:07:21,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 21:07:21,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 21:07:21,396 INFO L87 Difference]: Start difference. First operand 244 states and 391 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:07:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:07:21,459 INFO L93 Difference]: Finished difference Result 726 states and 1167 transitions. [2025-02-05 21:07:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 21:07:21,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 309 [2025-02-05 21:07:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:07:21,468 INFO L225 Difference]: With dead ends: 726 [2025-02-05 21:07:21,470 INFO L226 Difference]: Without dead ends: 485 [2025-02-05 21:07:21,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 21:07:21,473 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 141 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:07:21,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 508 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 21:07:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2025-02-05 21:07:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 481. [2025-02-05 21:07:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 326 states have (on average 1.4478527607361964) internal successors, (472), 328 states have internal predecessors, (472), 150 states have call successors, (150), 4 states have call predecessors, (150), 4 states have return successors, (150), 148 states have call predecessors, (150), 150 states have call successors, (150) [2025-02-05 21:07:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 772 transitions. [2025-02-05 21:07:21,550 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 772 transitions. Word has length 309 [2025-02-05 21:07:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:07:21,551 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 772 transitions. [2025-02-05 21:07:21,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:07:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 772 transitions. [2025-02-05 21:07:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-02-05 21:07:21,555 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:07:21,555 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:07:21,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 21:07:21,556 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:07:21,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:07:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1218447712, now seen corresponding path program 1 times [2025-02-05 21:07:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:07:21,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226082940] [2025-02-05 21:07:21,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:07:21,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:07:21,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-02-05 21:07:21,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-02-05 21:07:21,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:07:21,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:07:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-05 21:07:21,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:07:21,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226082940] [2025-02-05 21:07:21,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226082940] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:07:21,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:07:21,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 21:07:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652283638] [2025-02-05 21:07:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:07:21,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 21:07:21,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:07:21,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 21:07:21,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 21:07:21,914 INFO L87 Difference]: Start difference. First operand 481 states and 772 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:07:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:07:22,131 INFO L93 Difference]: Finished difference Result 1268 states and 2040 transitions. [2025-02-05 21:07:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 21:07:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 311 [2025-02-05 21:07:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:07:22,137 INFO L225 Difference]: With dead ends: 1268 [2025-02-05 21:07:22,138 INFO L226 Difference]: Without dead ends: 790 [2025-02-05 21:07:22,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:07:22,143 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 175 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 21:07:22,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 664 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 21:07:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2025-02-05 21:07:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 660. [2025-02-05 21:07:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 454 states have (on average 1.4889867841409692) internal successors, (676), 456 states have internal predecessors, (676), 199 states have call successors, (199), 6 states have call predecessors, (199), 6 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2025-02-05 21:07:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1074 transitions. [2025-02-05 21:07:22,230 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1074 transitions. Word has length 311 [2025-02-05 21:07:22,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:07:22,230 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 1074 transitions. [2025-02-05 21:07:22,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-05 21:07:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1074 transitions. [2025-02-05 21:07:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-02-05 21:07:22,233 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:07:22,233 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:07:22,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 21:07:22,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:07:22,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:07:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1978234601, now seen corresponding path program 1 times [2025-02-05 21:07:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:07:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715375510] [2025-02-05 21:07:22,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:07:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:07:22,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-02-05 21:07:22,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-02-05 21:07:22,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:07:22,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:07:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-05 21:07:37,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:07:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715375510] [2025-02-05 21:07:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715375510] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:07:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:07:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-05 21:07:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625871241] [2025-02-05 21:07:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:07:37,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 21:07:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:07:37,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 21:07:37,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-05 21:07:37,172 INFO L87 Difference]: Start difference. First operand 660 states and 1074 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-05 21:07:39,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:07:39,026 INFO L93 Difference]: Finished difference Result 2082 states and 3248 transitions. [2025-02-05 21:07:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 21:07:39,027 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 312 [2025-02-05 21:07:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:07:39,036 INFO L225 Difference]: With dead ends: 2082 [2025-02-05 21:07:39,036 INFO L226 Difference]: Without dead ends: 1604 [2025-02-05 21:07:39,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2025-02-05 21:07:39,041 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 911 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-05 21:07:39,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1404 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-05 21:07:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2025-02-05 21:07:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1139. [2025-02-05 21:07:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 770 states have (on average 1.3948051948051947) internal successors, (1074), 775 states have internal predecessors, (1074), 349 states have call successors, (349), 19 states have call predecessors, (349), 19 states have return successors, (349), 344 states have call predecessors, (349), 349 states have call successors, (349) [2025-02-05 21:07:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1772 transitions. [2025-02-05 21:07:39,177 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1772 transitions. Word has length 312 [2025-02-05 21:07:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:07:39,179 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1772 transitions. [2025-02-05 21:07:39,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-05 21:07:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1772 transitions. [2025-02-05 21:07:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-02-05 21:07:39,184 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:07:39,185 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:07:39,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 21:07:39,186 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:07:39,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:07:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1494689736, now seen corresponding path program 1 times [2025-02-05 21:07:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:07:39,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622388082] [2025-02-05 21:07:39,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:07:39,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:07:39,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-02-05 21:07:39,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-02-05 21:07:39,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:07:39,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:08:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-05 21:08:22,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:08:22,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622388082] [2025-02-05 21:08:22,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622388082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:08:22,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:08:22,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-02-05 21:08:22,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090179560] [2025-02-05 21:08:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:08:22,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 21:08:22,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:08:22,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 21:08:22,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-02-05 21:08:22,092 INFO L87 Difference]: Start difference. First operand 1139 states and 1772 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2025-02-05 21:08:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:08:25,093 INFO L93 Difference]: Finished difference Result 3048 states and 4656 transitions. [2025-02-05 21:08:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-05 21:08:25,093 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 312 [2025-02-05 21:08:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:08:25,102 INFO L225 Difference]: With dead ends: 3048 [2025-02-05 21:08:25,103 INFO L226 Difference]: Without dead ends: 2002 [2025-02-05 21:08:25,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2025-02-05 21:08:25,106 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 955 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-05 21:08:25,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1818 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-05 21:08:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2025-02-05 21:08:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1396. [2025-02-05 21:08:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1026 states have (on average 1.4444444444444444) internal successors, (1482), 1030 states have internal predecessors, (1482), 349 states have call successors, (349), 20 states have call predecessors, (349), 20 states have return successors, (349), 345 states have call predecessors, (349), 349 states have call successors, (349) [2025-02-05 21:08:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2180 transitions. [2025-02-05 21:08:25,212 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2180 transitions. Word has length 312 [2025-02-05 21:08:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:08:25,212 INFO L471 AbstractCegarLoop]: Abstraction has 1396 states and 2180 transitions. [2025-02-05 21:08:25,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2025-02-05 21:08:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2180 transitions. [2025-02-05 21:08:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-02-05 21:08:25,215 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:08:25,215 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:08:25,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 21:08:25,216 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:08:25,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:08:25,217 INFO L85 PathProgramCache]: Analyzing trace with hash 992823097, now seen corresponding path program 1 times [2025-02-05 21:08:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:08:25,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730618044] [2025-02-05 21:08:25,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:08:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:08:25,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-02-05 21:08:25,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-02-05 21:08:25,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:08:25,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat