./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 20:09:10,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 20:09:10,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 20:09:10,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 20:09:10,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 20:09:10,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 20:09:10,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 20:09:10,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 20:09:10,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 20:09:10,358 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 20:09:10,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 20:09:10,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 20:09:10,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 20:09:10,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 20:09:10,359 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 20:09:10,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 20:09:10,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 20:09:10,361 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 20:09:10,361 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 20:09:10,361 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 20:09:10,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 20:09:10,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 20:09:10,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 20:09:10,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 20:09:10,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 20:09:10,362 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e [2025-03-03 20:09:10,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 20:09:10,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 20:09:10,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 20:09:10,627 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 20:09:10,627 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 20:09:10,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-03-03 20:09:11,841 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ed98d6c/1ee50a8ec48a42fa95a0e7869f113d0f/FLAG82e1acd6a [2025-03-03 20:09:12,116 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 20:09:12,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-03-03 20:09:12,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ed98d6c/1ee50a8ec48a42fa95a0e7869f113d0f/FLAG82e1acd6a [2025-03-03 20:09:12,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ed98d6c/1ee50a8ec48a42fa95a0e7869f113d0f [2025-03-03 20:09:12,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 20:09:12,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 20:09:12,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 20:09:12,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 20:09:12,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 20:09:12,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a2656b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12, skipping insertion in model container [2025-03-03 20:09:12,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 20:09:12,549 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2025-03-03 20:09:12,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 20:09:12,717 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 20:09:12,725 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2025-03-03 20:09:12,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 20:09:12,813 INFO L204 MainTranslator]: Completed translation [2025-03-03 20:09:12,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12 WrapperNode [2025-03-03 20:09:12,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 20:09:12,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 20:09:12,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 20:09:12,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 20:09:12,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,909 INFO L138 Inliner]: procedures = 26, calls = 128, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 862 [2025-03-03 20:09:12,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 20:09:12,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 20:09:12,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 20:09:12,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 20:09:12,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,957 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]. [2025-03-03 20:09:12,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,981 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:12,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:13,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 20:09:13,002 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 20:09:13,002 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 20:09:13,002 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 20:09:13,003 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (1/1) ... [2025-03-03 20:09:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 20:09:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:13,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 20:09:13,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 20:09:13,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 20:09:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 20:09:13,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 20:09:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 20:09:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 20:09:13,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 20:09:13,182 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 20:09:13,183 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 20:09:14,107 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-03 20:09:14,108 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 20:09:14,146 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 20:09:14,146 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 20:09:14,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:09:14 BoogieIcfgContainer [2025-03-03 20:09:14,146 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 20:09:14,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 20:09:14,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 20:09:14,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 20:09:14,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 08:09:12" (1/3) ... [2025-03-03 20:09:14,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dab34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:09:14, skipping insertion in model container [2025-03-03 20:09:14,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 08:09:12" (2/3) ... [2025-03-03 20:09:14,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dab34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:09:14, skipping insertion in model container [2025-03-03 20:09:14,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 08:09:14" (3/3) ... [2025-03-03 20:09:14,156 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-03-03 20:09:14,167 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 20:09:14,170 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-54.i that has 2 procedures, 352 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 20:09:14,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 20:09:14,243 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;@1d4891a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 20:09:14,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 20:09:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 235 states have internal predecessors, (368), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2025-03-03 20:09:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-03-03 20:09:14,277 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:14,278 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:14,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:14,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:14,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1843541971, now seen corresponding path program 1 times [2025-03-03 20:09:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:14,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43172195] [2025-03-03 20:09:14,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:14,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:14,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-03 20:09:14,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-03 20:09:14,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:14,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 25992 trivial. 0 not checked. [2025-03-03 20:09:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43172195] [2025-03-03 20:09:14,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43172195] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:09:14,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754125931] [2025-03-03 20:09:14,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:14,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:14,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:14,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:09:14,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 20:09:15,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-03 20:09:15,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-03 20:09:15,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:15,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:15,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 20:09:15,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:09:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 25992 trivial. 0 not checked. [2025-03-03 20:09:15,293 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 20:09:15,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754125931] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:09:15,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 20:09:15,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 20:09:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828794593] [2025-03-03 20:09:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:09:15,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 20:09:15,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:15,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 20:09:15,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 20:09:15,319 INFO L87 Difference]: Start difference. First operand has 352 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 235 states have internal predecessors, (368), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2025-03-03 20:09:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:15,414 INFO L93 Difference]: Finished difference Result 698 states and 1306 transitions. [2025-03-03 20:09:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 20:09:15,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) Word has length 721 [2025-03-03 20:09:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:15,425 INFO L225 Difference]: With dead ends: 698 [2025-03-03 20:09:15,426 INFO L226 Difference]: Without dead ends: 349 [2025-03-03 20:09:15,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 20:09:15,434 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:15,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 20:09:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2025-03-03 20:09:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2025-03-03 20:09:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 232 states have (on average 1.5560344827586208) internal successors, (361), 232 states have internal predecessors, (361), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2025-03-03 20:09:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 591 transitions. [2025-03-03 20:09:15,510 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 591 transitions. Word has length 721 [2025-03-03 20:09:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:15,511 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 591 transitions. [2025-03-03 20:09:15,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2025-03-03 20:09:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 591 transitions. [2025-03-03 20:09:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-03-03 20:09:15,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:15,527 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:15,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 20:09:15,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 20:09:15,732 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:15,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1310994456, now seen corresponding path program 1 times [2025-03-03 20:09:15,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:15,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345539624] [2025-03-03 20:09:15,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:15,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:15,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-03 20:09:15,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-03 20:09:15,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:15,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-03 20:09:16,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345539624] [2025-03-03 20:09:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345539624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:09:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:09:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 20:09:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17866006] [2025-03-03 20:09:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:09:16,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 20:09:16,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:16,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 20:09:16,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 20:09:16,558 INFO L87 Difference]: Start difference. First operand 349 states and 591 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:16,653 INFO L93 Difference]: Finished difference Result 883 states and 1499 transitions. [2025-03-03 20:09:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 20:09:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2025-03-03 20:09:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:16,661 INFO L225 Difference]: With dead ends: 883 [2025-03-03 20:09:16,662 INFO L226 Difference]: Without dead ends: 537 [2025-03-03 20:09:16,663 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 [2025-03-03 20:09:16,664 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 282 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:16,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1128 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 20:09:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2025-03-03 20:09:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 534. [2025-03-03 20:09:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 372 states have (on average 1.5806451612903225) internal successors, (588), 373 states have internal predecessors, (588), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 158 states have call predecessors, (159), 159 states have call successors, (159) [2025-03-03 20:09:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 906 transitions. [2025-03-03 20:09:16,724 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 906 transitions. Word has length 721 [2025-03-03 20:09:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:16,726 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 906 transitions. [2025-03-03 20:09:16,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 906 transitions. [2025-03-03 20:09:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-03-03 20:09:16,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:16,766 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:16,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 20:09:16,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:16,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1522345369, now seen corresponding path program 1 times [2025-03-03 20:09:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:16,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814830993] [2025-03-03 20:09:16,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:16,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:16,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-03 20:09:16,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-03 20:09:16,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:16,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-03 20:09:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814830993] [2025-03-03 20:09:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814830993] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:09:17,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:09:17,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 20:09:17,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145537893] [2025-03-03 20:09:17,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:09:17,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 20:09:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:17,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 20:09:17,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 20:09:17,564 INFO L87 Difference]: Start difference. First operand 534 states and 906 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:18,092 INFO L93 Difference]: Finished difference Result 1526 states and 2598 transitions. [2025-03-03 20:09:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 20:09:18,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2025-03-03 20:09:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:18,101 INFO L225 Difference]: With dead ends: 1526 [2025-03-03 20:09:18,102 INFO L226 Difference]: Without dead ends: 995 [2025-03-03 20:09:18,104 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 [2025-03-03 20:09:18,106 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 572 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:18,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1705 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 20:09:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2025-03-03 20:09:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 965. [2025-03-03 20:09:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 686 states have (on average 1.6034985422740524) internal successors, (1100), 687 states have internal predecessors, (1100), 274 states have call successors, (274), 4 states have call predecessors, (274), 4 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) [2025-03-03 20:09:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1648 transitions. [2025-03-03 20:09:18,211 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1648 transitions. Word has length 721 [2025-03-03 20:09:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:18,214 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1648 transitions. [2025-03-03 20:09:18,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1648 transitions. [2025-03-03 20:09:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-03 20:09:18,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:18,220 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:18,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 20:09:18,220 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:18,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1183464034, now seen corresponding path program 1 times [2025-03-03 20:09:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:18,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942996005] [2025-03-03 20:09:18,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:18,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 20:09:18,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 20:09:18,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:18,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-03 20:09:18,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:18,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942996005] [2025-03-03 20:09:18,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942996005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:09:18,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:09:18,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 20:09:18,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647024263] [2025-03-03 20:09:18,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:09:18,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 20:09:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:18,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 20:09:18,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 20:09:18,919 INFO L87 Difference]: Start difference. First operand 965 states and 1648 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:19,143 INFO L93 Difference]: Finished difference Result 2222 states and 3807 transitions. [2025-03-03 20:09:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 20:09:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 722 [2025-03-03 20:09:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:19,156 INFO L225 Difference]: With dead ends: 2222 [2025-03-03 20:09:19,156 INFO L226 Difference]: Without dead ends: 1651 [2025-03-03 20:09:19,159 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 [2025-03-03 20:09:19,160 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 360 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:19,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1787 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 20:09:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2025-03-03 20:09:19,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2025-03-03 20:09:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1209 states have (on average 1.6228287841191067) internal successors, (1962), 1211 states have internal predecessors, (1962), 433 states have call successors, (433), 6 states have call predecessors, (433), 6 states have return successors, (433), 431 states have call predecessors, (433), 433 states have call successors, (433) [2025-03-03 20:09:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2828 transitions. [2025-03-03 20:09:19,332 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2828 transitions. Word has length 722 [2025-03-03 20:09:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:19,333 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2828 transitions. [2025-03-03 20:09:19,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2828 transitions. [2025-03-03 20:09:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2025-03-03 20:09:19,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:19,338 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:19,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 20:09:19,339 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:19,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash 988193846, now seen corresponding path program 1 times [2025-03-03 20:09:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:19,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133847995] [2025-03-03 20:09:19,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:19,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 723 statements into 1 equivalence classes. [2025-03-03 20:09:19,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 723 of 723 statements. [2025-03-03 20:09:19,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:19,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-03 20:09:20,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:20,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133847995] [2025-03-03 20:09:20,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133847995] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:09:20,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:09:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 20:09:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767951638] [2025-03-03 20:09:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:09:20,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 20:09:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:20,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 20:09:20,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 20:09:20,229 INFO L87 Difference]: Start difference. First operand 1649 states and 2828 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:21,050 INFO L93 Difference]: Finished difference Result 3757 states and 6435 transitions. [2025-03-03 20:09:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 20:09:21,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 723 [2025-03-03 20:09:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:21,068 INFO L225 Difference]: With dead ends: 3757 [2025-03-03 20:09:21,069 INFO L226 Difference]: Without dead ends: 2521 [2025-03-03 20:09:21,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 20:09:21,075 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 890 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:21,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 2650 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 20:09:21,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2025-03-03 20:09:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1807. [2025-03-03 20:09:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1455 states have (on average 1.6900343642611684) internal successors, (2459), 1455 states have internal predecessors, (2459), 345 states have call successors, (345), 6 states have call predecessors, (345), 6 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2025-03-03 20:09:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3149 transitions. [2025-03-03 20:09:21,260 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3149 transitions. Word has length 723 [2025-03-03 20:09:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:21,264 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 3149 transitions. [2025-03-03 20:09:21,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3149 transitions. [2025-03-03 20:09:21,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2025-03-03 20:09:21,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:21,273 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:21,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 20:09:21,274 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:21,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1074485970, now seen corresponding path program 1 times [2025-03-03 20:09:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613083300] [2025-03-03 20:09:21,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:21,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-03 20:09:21,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-03 20:09:21,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:21,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613083300] [2025-03-03 20:09:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613083300] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:09:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373399060] [2025-03-03 20:09:22,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:22,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:22,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:22,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:09:22,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 20:09:23,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-03 20:09:23,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-03 20:09:23,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:23,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:23,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 20:09:23,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:09:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13204 proven. 177 refuted. 0 times theorem prover too weak. 12839 trivial. 0 not checked. [2025-03-03 20:09:23,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 20:09:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373399060] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 20:09:24,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 20:09:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-03 20:09:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54565048] [2025-03-03 20:09:24,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 20:09:24,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-03 20:09:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:24,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-03 20:09:24,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-03-03 20:09:24,436 INFO L87 Difference]: Start difference. First operand 1807 states and 3149 transitions. Second operand has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) [2025-03-03 20:09:28,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:28,099 INFO L93 Difference]: Finished difference Result 5927 states and 10239 transitions. [2025-03-03 20:09:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-03 20:09:28,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) Word has length 724 [2025-03-03 20:09:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:28,125 INFO L225 Difference]: With dead ends: 5927 [2025-03-03 20:09:28,126 INFO L226 Difference]: Without dead ends: 5345 [2025-03-03 20:09:28,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1446 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=629, Invalid=2023, Unknown=0, NotChecked=0, Total=2652 [2025-03-03 20:09:28,133 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 1668 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 4292 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 5005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 4292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:28,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 5017 Invalid, 5005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 4292 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-03 20:09:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2025-03-03 20:09:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4877. [2025-03-03 20:09:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4877 states, 4137 states have (on average 1.7135605511240029) internal successors, (7089), 4143 states have internal predecessors, (7089), 709 states have call successors, (709), 30 states have call predecessors, (709), 30 states have return successors, (709), 703 states have call predecessors, (709), 709 states have call successors, (709) [2025-03-03 20:09:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 8507 transitions. [2025-03-03 20:09:28,399 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 8507 transitions. Word has length 724 [2025-03-03 20:09:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:28,401 INFO L471 AbstractCegarLoop]: Abstraction has 4877 states and 8507 transitions. [2025-03-03 20:09:28,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) [2025-03-03 20:09:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 8507 transitions. [2025-03-03 20:09:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2025-03-03 20:09:28,408 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:28,408 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:28,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 20:09:28,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-03 20:09:28,609 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:28,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:28,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1514101533, now seen corresponding path program 1 times [2025-03-03 20:09:28,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:28,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185398885] [2025-03-03 20:09:28,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:28,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:28,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-03 20:09:28,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-03 20:09:28,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:28,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 108 proven. 234 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:30,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:30,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185398885] [2025-03-03 20:09:30,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185398885] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:09:30,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256545886] [2025-03-03 20:09:30,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:30,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:30,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:30,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:09:30,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 20:09:30,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-03 20:09:30,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-03 20:09:30,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:30,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:30,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 20:09:30,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:09:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 14881 proven. 324 refuted. 0 times theorem prover too weak. 11015 trivial. 0 not checked. [2025-03-03 20:09:31,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 20:09:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256545886] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 20:09:32,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 20:09:32,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 7] total 24 [2025-03-03 20:09:32,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049181843] [2025-03-03 20:09:32,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 20:09:32,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-03 20:09:32,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:32,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-03 20:09:32,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2025-03-03 20:09:32,182 INFO L87 Difference]: Start difference. First operand 4877 states and 8507 transitions. Second operand has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) [2025-03-03 20:09:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:40,081 INFO L93 Difference]: Finished difference Result 13161 states and 22831 transitions. [2025-03-03 20:09:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2025-03-03 20:09:40,082 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) Word has length 724 [2025-03-03 20:09:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:40,118 INFO L225 Difference]: With dead ends: 13161 [2025-03-03 20:09:40,118 INFO L226 Difference]: Without dead ends: 8498 [2025-03-03 20:09:40,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1451 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3924 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2311, Invalid=9245, Unknown=0, NotChecked=0, Total=11556 [2025-03-03 20:09:40,132 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 8636 mSDsluCounter, 6919 mSDsCounter, 0 mSdLazyCounter, 7586 mSolverCounterSat, 3591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8690 SdHoareTripleChecker+Valid, 7816 SdHoareTripleChecker+Invalid, 11177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3591 IncrementalHoareTripleChecker+Valid, 7586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:40,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8690 Valid, 7816 Invalid, 11177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3591 Valid, 7586 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2025-03-03 20:09:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2025-03-03 20:09:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 6089. [2025-03-03 20:09:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 5494 states have (on average 1.7489989078995267) internal successors, (9609), 5498 states have internal predecessors, (9609), 561 states have call successors, (561), 33 states have call predecessors, (561), 33 states have return successors, (561), 557 states have call predecessors, (561), 561 states have call successors, (561) [2025-03-03 20:09:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 10731 transitions. [2025-03-03 20:09:40,441 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 10731 transitions. Word has length 724 [2025-03-03 20:09:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:40,444 INFO L471 AbstractCegarLoop]: Abstraction has 6089 states and 10731 transitions. [2025-03-03 20:09:40,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) [2025-03-03 20:09:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 10731 transitions. [2025-03-03 20:09:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2025-03-03 20:09:40,457 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:40,458 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:40,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 20:09:40,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:40,661 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:40,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1834729893, now seen corresponding path program 1 times [2025-03-03 20:09:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793971375] [2025-03-03 20:09:40,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:40,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 725 statements into 1 equivalence classes. [2025-03-03 20:09:40,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 725 of 725 statements. [2025-03-03 20:09:40,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:40,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 186 proven. 156 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793971375] [2025-03-03 20:09:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793971375] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:09:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554028151] [2025-03-03 20:09:41,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:41,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:09:41,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 20:09:41,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 725 statements into 1 equivalence classes. [2025-03-03 20:09:41,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 725 of 725 statements. [2025-03-03 20:09:41,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:41,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:41,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 20:09:41,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:09:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 10774 proven. 96 refuted. 0 times theorem prover too weak. 15350 trivial. 0 not checked. [2025-03-03 20:09:42,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 20:09:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:42,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554028151] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 20:09:42,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 20:09:42,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2025-03-03 20:09:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734995981] [2025-03-03 20:09:42,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 20:09:42,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 20:09:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:42,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 20:09:42,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-03 20:09:42,787 INFO L87 Difference]: Start difference. First operand 6089 states and 10731 transitions. Second operand has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) [2025-03-03 20:09:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:44,380 INFO L93 Difference]: Finished difference Result 15882 states and 27759 transitions. [2025-03-03 20:09:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 20:09:44,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) Word has length 725 [2025-03-03 20:09:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:44,422 INFO L225 Difference]: With dead ends: 15882 [2025-03-03 20:09:44,423 INFO L226 Difference]: Without dead ends: 10407 [2025-03-03 20:09:44,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1447 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=742, Unknown=0, NotChecked=0, Total=1056 [2025-03-03 20:09:44,432 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 2208 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 1603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:44,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 1642 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1603 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-03 20:09:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2025-03-03 20:09:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 10271. [2025-03-03 20:09:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10271 states, 9265 states have (on average 1.7202374527792768) internal successors, (15938), 9275 states have internal predecessors, (15938), 921 states have call successors, (921), 84 states have call predecessors, (921), 84 states have return successors, (921), 911 states have call predecessors, (921), 921 states have call successors, (921) [2025-03-03 20:09:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 17780 transitions. [2025-03-03 20:09:44,963 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 17780 transitions. Word has length 725 [2025-03-03 20:09:44,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:44,964 INFO L471 AbstractCegarLoop]: Abstraction has 10271 states and 17780 transitions. [2025-03-03 20:09:44,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) [2025-03-03 20:09:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 17780 transitions. [2025-03-03 20:09:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2025-03-03 20:09:44,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:44,974 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:44,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 20:09:45,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:45,179 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:45,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1023909421, now seen corresponding path program 1 times [2025-03-03 20:09:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:45,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108735145] [2025-03-03 20:09:45,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:45,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:45,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-03-03 20:09:45,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-03-03 20:09:45,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:45,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-03 20:09:45,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108735145] [2025-03-03 20:09:45,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108735145] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 20:09:45,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 20:09:45,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 20:09:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825912565] [2025-03-03 20:09:45,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 20:09:45,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 20:09:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:45,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 20:09:45,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 20:09:45,338 INFO L87 Difference]: Start difference. First operand 10271 states and 17780 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:45,950 INFO L93 Difference]: Finished difference Result 28583 states and 49647 transitions. [2025-03-03 20:09:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 20:09:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 726 [2025-03-03 20:09:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:46,004 INFO L225 Difference]: With dead ends: 28583 [2025-03-03 20:09:46,005 INFO L226 Difference]: Without dead ends: 19318 [2025-03-03 20:09:46,022 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 [2025-03-03 20:09:46,023 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 356 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:46,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1456 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 20:09:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19318 states. [2025-03-03 20:09:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19318 to 19308. [2025-03-03 20:09:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19308 states, 17734 states have (on average 1.7063832186759895) internal successors, (30261), 17756 states have internal predecessors, (30261), 1449 states have call successors, (1449), 124 states have call predecessors, (1449), 124 states have return successors, (1449), 1427 states have call predecessors, (1449), 1449 states have call successors, (1449) [2025-03-03 20:09:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19308 states to 19308 states and 33159 transitions. [2025-03-03 20:09:46,802 INFO L78 Accepts]: Start accepts. Automaton has 19308 states and 33159 transitions. Word has length 726 [2025-03-03 20:09:46,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:46,804 INFO L471 AbstractCegarLoop]: Abstraction has 19308 states and 33159 transitions. [2025-03-03 20:09:46,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-03 20:09:46,804 INFO L276 IsEmpty]: Start isEmpty. Operand 19308 states and 33159 transitions. [2025-03-03 20:09:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2025-03-03 20:09:46,819 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:46,820 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:46,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 20:09:46,820 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:46,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash -911750866, now seen corresponding path program 1 times [2025-03-03 20:09:46,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:46,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643614164] [2025-03-03 20:09:46,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:46,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:46,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-03-03 20:09:47,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-03-03 20:09:47,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:47,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 204 proven. 138 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:47,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643614164] [2025-03-03 20:09:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643614164] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:09:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364820941] [2025-03-03 20:09:47,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:47,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:47,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:09:47,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 20:09:47,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-03-03 20:09:47,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-03-03 20:09:47,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:47,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:47,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 20:09:47,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:09:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13244 proven. 354 refuted. 0 times theorem prover too weak. 12622 trivial. 0 not checked. [2025-03-03 20:09:48,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 20:09:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 324 proven. 357 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2025-03-03 20:09:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364820941] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 20:09:49,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 20:09:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2025-03-03 20:09:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463829231] [2025-03-03 20:09:49,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 20:09:49,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-03 20:09:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:49,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-03 20:09:49,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-03-03 20:09:49,399 INFO L87 Difference]: Start difference. First operand 19308 states and 33159 transitions. Second operand has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-03 20:09:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:51,170 INFO L93 Difference]: Finished difference Result 27121 states and 46359 transitions. [2025-03-03 20:09:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-03 20:09:51,171 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) Word has length 726 [2025-03-03 20:09:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:51,199 INFO L225 Difference]: With dead ends: 27121 [2025-03-03 20:09:51,199 INFO L226 Difference]: Without dead ends: 10173 [2025-03-03 20:09:51,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1443 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2025-03-03 20:09:51,219 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 1220 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:51,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2040 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-03 20:09:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10173 states. [2025-03-03 20:09:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10173 to 6557. [2025-03-03 20:09:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6557 states, 5625 states have (on average 1.6366222222222222) internal successors, (9206), 5635 states have internal predecessors, (9206), 849 states have call successors, (849), 82 states have call predecessors, (849), 82 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-03-03 20:09:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6557 states to 6557 states and 10904 transitions. [2025-03-03 20:09:51,583 INFO L78 Accepts]: Start accepts. Automaton has 6557 states and 10904 transitions. Word has length 726 [2025-03-03 20:09:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:51,584 INFO L471 AbstractCegarLoop]: Abstraction has 6557 states and 10904 transitions. [2025-03-03 20:09:51,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-03 20:09:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6557 states and 10904 transitions. [2025-03-03 20:09:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-03-03 20:09:51,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:51,591 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:51,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 20:09:51,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 20:09:51,792 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:51,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash 89658190, now seen corresponding path program 1 times [2025-03-03 20:09:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:51,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425381686] [2025-03-03 20:09:51,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:51,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-03 20:09:52,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-03 20:09:52,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:52,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 180 proven. 162 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:52,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425381686] [2025-03-03 20:09:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425381686] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:09:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036865603] [2025-03-03 20:09:52,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:52,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:52,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:09:52,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 20:09:52,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-03 20:09:52,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-03 20:09:52,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:52,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:52,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 20:09:52,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:09:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 11108 proven. 111 refuted. 0 times theorem prover too weak. 15001 trivial. 0 not checked. [2025-03-03 20:09:53,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 20:09:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 567 proven. 114 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2025-03-03 20:09:53,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036865603] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 20:09:53,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 20:09:53,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 20 [2025-03-03 20:09:53,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653784697] [2025-03-03 20:09:53,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 20:09:53,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-03 20:09:53,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:53,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-03 20:09:53,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-03-03 20:09:53,568 INFO L87 Difference]: Start difference. First operand 6557 states and 10904 transitions. Second operand has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) [2025-03-03 20:09:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:55,785 INFO L93 Difference]: Finished difference Result 18171 states and 30187 transitions. [2025-03-03 20:09:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-03 20:09:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) Word has length 727 [2025-03-03 20:09:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:55,815 INFO L225 Difference]: With dead ends: 18171 [2025-03-03 20:09:55,815 INFO L226 Difference]: Without dead ends: 12087 [2025-03-03 20:09:55,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1484 GetRequests, 1443 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=497, Invalid=1309, Unknown=0, NotChecked=0, Total=1806 [2025-03-03 20:09:55,827 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 2293 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:55,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 2542 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 20:09:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12087 states. [2025-03-03 20:09:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 9895. [2025-03-03 20:09:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9895 states, 8942 states have (on average 1.6630507716394543) internal successors, (14871), 8952 states have internal predecessors, (14871), 849 states have call successors, (849), 103 states have call predecessors, (849), 103 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-03-03 20:09:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9895 states to 9895 states and 16569 transitions. [2025-03-03 20:09:56,289 INFO L78 Accepts]: Start accepts. Automaton has 9895 states and 16569 transitions. Word has length 727 [2025-03-03 20:09:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:56,290 INFO L471 AbstractCegarLoop]: Abstraction has 9895 states and 16569 transitions. [2025-03-03 20:09:56,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) [2025-03-03 20:09:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 9895 states and 16569 transitions. [2025-03-03 20:09:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-03-03 20:09:56,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:56,299 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:56,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-03 20:09:56,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:56,500 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:56,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1107039989, now seen corresponding path program 1 times [2025-03-03 20:09:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314276165] [2025-03-03 20:09:56,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:56,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:09:56,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-03 20:09:56,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-03 20:09:56,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:56,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 219 proven. 123 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:57,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:09:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314276165] [2025-03-03 20:09:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314276165] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:09:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583524836] [2025-03-03 20:09:57,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:57,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:57,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:09:57,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:09:57,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 20:09:57,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-03 20:09:57,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-03 20:09:57,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:09:57,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:09:57,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 20:09:57,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:09:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 16896 proven. 90 refuted. 0 times theorem prover too weak. 9234 trivial. 0 not checked. [2025-03-03 20:09:57,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 20:09:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 252 proven. 90 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-03 20:09:58,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583524836] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 20:09:58,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 20:09:58,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2025-03-03 20:09:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866488586] [2025-03-03 20:09:58,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 20:09:58,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 20:09:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:09:58,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 20:09:58,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-03-03 20:09:58,235 INFO L87 Difference]: Start difference. First operand 9895 states and 16569 transitions. Second operand has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-03 20:09:59,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:09:59,301 INFO L93 Difference]: Finished difference Result 15867 states and 26336 transitions. [2025-03-03 20:09:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-03 20:09:59,302 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) Word has length 727 [2025-03-03 20:09:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:09:59,321 INFO L225 Difference]: With dead ends: 15867 [2025-03-03 20:09:59,321 INFO L226 Difference]: Without dead ends: 6745 [2025-03-03 20:09:59,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1448 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2025-03-03 20:09:59,332 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 1508 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 20:09:59,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1311 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 20:09:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2025-03-03 20:09:59,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6641. [2025-03-03 20:09:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6641 states, 5683 states have (on average 1.6076016188632765) internal successors, (9136), 5693 states have internal predecessors, (9136), 849 states have call successors, (849), 108 states have call predecessors, (849), 108 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-03-03 20:09:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6641 states to 6641 states and 10834 transitions. [2025-03-03 20:09:59,774 INFO L78 Accepts]: Start accepts. Automaton has 6641 states and 10834 transitions. Word has length 727 [2025-03-03 20:09:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:09:59,775 INFO L471 AbstractCegarLoop]: Abstraction has 6641 states and 10834 transitions. [2025-03-03 20:09:59,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-03 20:09:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 6641 states and 10834 transitions. [2025-03-03 20:09:59,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-03-03 20:09:59,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:09:59,785 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:09:59,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 20:09:59,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:09:59,989 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:09:59,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:09:59,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1872390537, now seen corresponding path program 1 times [2025-03-03 20:09:59,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:09:59,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617132129] [2025-03-03 20:09:59,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:09:59,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:10:00,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-03 20:10:00,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-03 20:10:00,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:10:00,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:10:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 510 proven. 498 refuted. 0 times theorem prover too weak. 25212 trivial. 0 not checked. [2025-03-03 20:10:01,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:10:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617132129] [2025-03-03 20:10:01,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617132129] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:10:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884664990] [2025-03-03 20:10:01,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:10:01,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:10:01,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:10:01,231 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:10:01,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 20:10:01,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-03 20:10:01,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-03 20:10:01,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:10:01,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:10:01,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-03 20:10:01,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:10:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 19330 proven. 837 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2025-03-03 20:10:04,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 20:10:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 900 proven. 780 refuted. 0 times theorem prover too weak. 24540 trivial. 0 not checked. [2025-03-03 20:10:06,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884664990] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 20:10:06,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 20:10:06,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 23, 22] total 49 [2025-03-03 20:10:06,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671047442] [2025-03-03 20:10:06,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 20:10:06,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-03 20:10:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 20:10:06,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-03 20:10:06,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1878, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 20:10:06,843 INFO L87 Difference]: Start difference. First operand 6641 states and 10834 transitions. Second operand has 49 states, 48 states have (on average 7.708333333333333) internal successors, (370), 47 states have internal predecessors, (370), 14 states have call successors, (253), 7 states have call predecessors, (253), 16 states have return successors, (255), 14 states have call predecessors, (255), 14 states have call successors, (255) [2025-03-03 20:10:18,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 20:10:18,030 INFO L93 Difference]: Finished difference Result 21271 states and 34276 transitions. [2025-03-03 20:10:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2025-03-03 20:10:18,031 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 7.708333333333333) internal successors, (370), 47 states have internal predecessors, (370), 14 states have call successors, (253), 7 states have call predecessors, (253), 16 states have return successors, (255), 14 states have call predecessors, (255), 14 states have call successors, (255) Word has length 727 [2025-03-03 20:10:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 20:10:18,068 INFO L225 Difference]: With dead ends: 21271 [2025-03-03 20:10:18,068 INFO L226 Difference]: Without dead ends: 16747 [2025-03-03 20:10:18,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1600 GetRequests, 1431 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10365 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6209, Invalid=22861, Unknown=0, NotChecked=0, Total=29070 [2025-03-03 20:10:18,086 INFO L435 NwaCegarLoop]: 659 mSDtfsCounter, 6174 mSDsluCounter, 4983 mSDsCounter, 0 mSdLazyCounter, 7168 mSolverCounterSat, 3520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6209 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 10688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3520 IncrementalHoareTripleChecker+Valid, 7168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2025-03-03 20:10:18,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6209 Valid, 5642 Invalid, 10688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3520 Valid, 7168 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2025-03-03 20:10:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16747 states. [2025-03-03 20:10:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16747 to 6857. [2025-03-03 20:10:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6857 states, 6076 states have (on average 1.630348913759052) internal successors, (9906), 6084 states have internal predecessors, (9906), 685 states have call successors, (685), 95 states have call predecessors, (685), 95 states have return successors, (685), 677 states have call predecessors, (685), 685 states have call successors, (685) [2025-03-03 20:10:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6857 states to 6857 states and 11276 transitions. [2025-03-03 20:10:18,674 INFO L78 Accepts]: Start accepts. Automaton has 6857 states and 11276 transitions. Word has length 727 [2025-03-03 20:10:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 20:10:18,675 INFO L471 AbstractCegarLoop]: Abstraction has 6857 states and 11276 transitions. [2025-03-03 20:10:18,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 7.708333333333333) internal successors, (370), 47 states have internal predecessors, (370), 14 states have call successors, (253), 7 states have call predecessors, (253), 16 states have return successors, (255), 14 states have call predecessors, (255), 14 states have call successors, (255) [2025-03-03 20:10:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6857 states and 11276 transitions. [2025-03-03 20:10:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2025-03-03 20:10:18,681 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 20:10:18,681 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 20:10:18,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 20:10:18,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 20:10:18,886 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 20:10:18,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 20:10:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1291894857, now seen corresponding path program 1 times [2025-03-03 20:10:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 20:10:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457012442] [2025-03-03 20:10:18,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:10:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 20:10:18,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 728 statements into 1 equivalence classes. [2025-03-03 20:10:19,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 728 of 728 statements. [2025-03-03 20:10:19,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:10:19,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:10:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 885 proven. 447 refuted. 0 times theorem prover too weak. 24888 trivial. 0 not checked. [2025-03-03 20:10:20,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 20:10:20,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457012442] [2025-03-03 20:10:20,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457012442] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 20:10:20,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186296517] [2025-03-03 20:10:20,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 20:10:20,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 20:10:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 20:10:20,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 20:10:20,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 20:10:20,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 728 statements into 1 equivalence classes. [2025-03-03 20:10:21,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 728 of 728 statements. [2025-03-03 20:10:21,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 20:10:21,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 20:10:21,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-03 20:10:21,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 20:10:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 16576 proven. 936 refuted. 0 times theorem prover too weak. 8708 trivial. 0 not checked. [2025-03-03 20:10:24,240 INFO L312 TraceCheckSpWp]: Computing backward predicates...