./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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-250_file-29.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 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 00:04:08,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 00:04:08,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 00:04:08,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 00:04:08,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 00:04:08,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 00:04:08,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 00:04:08,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 00:04:08,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 00:04:08,144 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 00:04:08,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 00:04:08,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 00:04:08,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 00:04:08,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 00:04:08,146 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 00:04:08,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 00:04:08,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 00:04:08,146 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 00:04:08,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 00:04:08,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 00:04:08,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 00:04:08,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 00:04:08,147 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 00:04:08,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:04:08,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 00:04:08,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 00:04:08,148 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 -> 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f [2025-03-17 00:04:08,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 00:04:08,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 00:04:08,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 00:04:08,373 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 00:04:08,373 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 00:04:08,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2025-03-17 00:04:09,511 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7430834a2/e404486a7d854e79ab416b87b5921593/FLAG67bb2c94e [2025-03-17 00:04:09,825 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 00:04:09,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2025-03-17 00:04:09,840 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7430834a2/e404486a7d854e79ab416b87b5921593/FLAG67bb2c94e [2025-03-17 00:04:10,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7430834a2/e404486a7d854e79ab416b87b5921593 [2025-03-17 00:04:10,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 00:04:10,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 00:04:10,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 00:04:10,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 00:04:10,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 00:04:10,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3317cdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10, skipping insertion in model container [2025-03-17 00:04:10,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 00:04:10,216 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-250_file-29.i[916,929] [2025-03-17 00:04:10,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:04:10,309 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 00:04:10,317 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-250_file-29.i[916,929] [2025-03-17 00:04:10,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:04:10,392 INFO L204 MainTranslator]: Completed translation [2025-03-17 00:04:10,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10 WrapperNode [2025-03-17 00:04:10,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 00:04:10,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 00:04:10,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 00:04:10,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 00:04:10,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,472 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 550 [2025-03-17 00:04:10,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 00:04:10,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 00:04:10,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 00:04:10,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 00:04:10,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,518 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]. [2025-03-17 00:04:10,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,540 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 00:04:10,568 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 00:04:10,568 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 00:04:10,568 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 00:04:10,569 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (1/1) ... [2025-03-17 00:04:10,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:04:10,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:04:10,596 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) [2025-03-17 00:04:10,599 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 [2025-03-17 00:04:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 00:04:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 00:04:10,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 00:04:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 00:04:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 00:04:10,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 00:04:10,699 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 00:04:10,701 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 00:04:11,428 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-17 00:04:11,429 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 00:04:11,459 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 00:04:11,459 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 00:04:11,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:04:11 BoogieIcfgContainer [2025-03-17 00:04:11,459 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 00:04:11,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 00:04:11,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 00:04:11,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 00:04:11,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:04:10" (1/3) ... [2025-03-17 00:04:11,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a93251c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:04:11, skipping insertion in model container [2025-03-17 00:04:11,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:04:10" (2/3) ... [2025-03-17 00:04:11,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a93251c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:04:11, skipping insertion in model container [2025-03-17 00:04:11,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:04:11" (3/3) ... [2025-03-17 00:04:11,475 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2025-03-17 00:04:11,486 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 00:04:11,490 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i that has 2 procedures, 223 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 00:04:11,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 00:04:11,551 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;@1cdaecc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 00:04:11,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 00:04:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 144 states have (on average 1.5694444444444444) internal successors, (226), 145 states have internal predecessors, (226), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 00:04:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:11,582 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:11,583 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:11,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:11,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1285390811, now seen corresponding path program 1 times [2025-03-17 00:04:11,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:11,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086319410] [2025-03-17 00:04:11,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:11,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:11,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:11,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:11,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:11,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2025-03-17 00:04:12,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:12,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086319410] [2025-03-17 00:04:12,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086319410] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:04:12,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869560256] [2025-03-17 00:04:12,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:12,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:12,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:04:12,124 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) [2025-03-17 00:04:12,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 00:04:12,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:12,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:12,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:12,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:12,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 00:04:12,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:04:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2025-03-17 00:04:12,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 00:04:12,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869560256] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:12,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 00:04:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 00:04:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743562398] [2025-03-17 00:04:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:12,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 00:04:12,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:12,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 00:04:12,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:04:12,458 INFO L87 Difference]: Start difference. First operand has 223 states, 144 states have (on average 1.5694444444444444) internal successors, (226), 145 states have internal predecessors, (226), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-17 00:04:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:12,527 INFO L93 Difference]: Finished difference Result 443 states and 830 transitions. [2025-03-17 00:04:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 00:04:12,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 467 [2025-03-17 00:04:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:12,537 INFO L225 Difference]: With dead ends: 443 [2025-03-17 00:04:12,539 INFO L226 Difference]: Without dead ends: 221 [2025-03-17 00:04:12,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:04:12,548 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:12,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 361 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:04:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-03-17 00:04:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2025-03-17 00:04:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 143 states have (on average 1.5454545454545454) internal successors, (221), 143 states have internal predecessors, (221), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 00:04:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 373 transitions. [2025-03-17 00:04:12,613 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 373 transitions. Word has length 467 [2025-03-17 00:04:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:12,615 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 373 transitions. [2025-03-17 00:04:12,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-17 00:04:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 373 transitions. [2025-03-17 00:04:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:12,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:12,625 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:12,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 00:04:12,826 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 [2025-03-17 00:04:12,826 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:12,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1341266869, now seen corresponding path program 1 times [2025-03-17 00:04:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:12,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648122134] [2025-03-17 00:04:12,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:12,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:12,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:12,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:12,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:12,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:13,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:13,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648122134] [2025-03-17 00:04:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648122134] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:13,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:13,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:04:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495075840] [2025-03-17 00:04:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:13,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:04:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:13,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:04:13,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:04:13,260 INFO L87 Difference]: Start difference. First operand 221 states and 373 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:13,363 INFO L93 Difference]: Finished difference Result 571 states and 966 transitions. [2025-03-17 00:04:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:04:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:13,372 INFO L225 Difference]: With dead ends: 571 [2025-03-17 00:04:13,372 INFO L226 Difference]: Without dead ends: 351 [2025-03-17 00:04:13,373 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 [2025-03-17 00:04:13,374 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 227 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:13,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 785 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 00:04:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-03-17 00:04:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 348. [2025-03-17 00:04:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 239 states have (on average 1.5732217573221758) internal successors, (376), 240 states have internal predecessors, (376), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2025-03-17 00:04:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 588 transitions. [2025-03-17 00:04:13,444 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 588 transitions. Word has length 467 [2025-03-17 00:04:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:13,445 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 588 transitions. [2025-03-17 00:04:13,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 588 transitions. [2025-03-17 00:04:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:13,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:13,455 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:13,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 00:04:13,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:13,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -594393418, now seen corresponding path program 1 times [2025-03-17 00:04:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:13,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566355239] [2025-03-17 00:04:13,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:13,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:13,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:13,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:13,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:13,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566355239] [2025-03-17 00:04:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566355239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:13,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:13,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:04:13,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602954853] [2025-03-17 00:04:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:13,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:04:13,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:13,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:04:13,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:04:13,794 INFO L87 Difference]: Start difference. First operand 348 states and 588 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:13,871 INFO L93 Difference]: Finished difference Result 706 states and 1188 transitions. [2025-03-17 00:04:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:04:13,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:13,875 INFO L225 Difference]: With dead ends: 706 [2025-03-17 00:04:13,875 INFO L226 Difference]: Without dead ends: 359 [2025-03-17 00:04:13,876 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 [2025-03-17 00:04:13,877 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 191 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:13,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 778 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:04:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-03-17 00:04:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 292. [2025-03-17 00:04:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.591549295774648) internal successors, (339), 213 states have internal predecessors, (339), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 00:04:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 491 transitions. [2025-03-17 00:04:13,910 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 491 transitions. Word has length 467 [2025-03-17 00:04:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:13,911 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 491 transitions. [2025-03-17 00:04:13,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 491 transitions. [2025-03-17 00:04:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:13,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:13,918 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:13,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 00:04:13,918 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:13,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1104927595, now seen corresponding path program 1 times [2025-03-17 00:04:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:13,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896774746] [2025-03-17 00:04:13,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:13,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:13,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:13,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:13,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:13,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:14,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:14,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896774746] [2025-03-17 00:04:14,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896774746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:14,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:14,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:04:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373923316] [2025-03-17 00:04:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:14,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:04:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:14,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:04:14,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:04:14,153 INFO L87 Difference]: Start difference. First operand 292 states and 491 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:14,216 INFO L93 Difference]: Finished difference Result 710 states and 1182 transitions. [2025-03-17 00:04:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:04:14,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:14,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:14,220 INFO L225 Difference]: With dead ends: 710 [2025-03-17 00:04:14,220 INFO L226 Difference]: Without dead ends: 419 [2025-03-17 00:04:14,221 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 [2025-03-17 00:04:14,222 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 189 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:14,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 712 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:04:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-03-17 00:04:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2025-03-17 00:04:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 279 states have (on average 1.5197132616487454) internal successors, (424), 280 states have internal predecessors, (424), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2025-03-17 00:04:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 688 transitions. [2025-03-17 00:04:14,265 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 688 transitions. Word has length 467 [2025-03-17 00:04:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:14,266 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 688 transitions. [2025-03-17 00:04:14,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 688 transitions. [2025-03-17 00:04:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:14,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:14,271 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:14,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 00:04:14,272 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:14,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1610486220, now seen corresponding path program 1 times [2025-03-17 00:04:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864638566] [2025-03-17 00:04:14,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:14,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:14,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:14,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:14,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:14,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:14,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:14,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864638566] [2025-03-17 00:04:14,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864638566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:14,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:14,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 00:04:14,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830659461] [2025-03-17 00:04:14,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:14,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 00:04:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:14,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 00:04:14,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 00:04:14,674 INFO L87 Difference]: Start difference. First operand 416 states and 688 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:16,979 INFO L93 Difference]: Finished difference Result 3111 states and 5131 transitions. [2025-03-17 00:04:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 00:04:16,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:16,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:16,995 INFO L225 Difference]: With dead ends: 3111 [2025-03-17 00:04:16,996 INFO L226 Difference]: Without dead ends: 2696 [2025-03-17 00:04:16,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-17 00:04:16,998 INFO L435 NwaCegarLoop]: 576 mSDtfsCounter, 1914 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:16,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1914 Valid, 2009 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 00:04:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2025-03-17 00:04:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 1562. [2025-03-17 00:04:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1045 states have (on average 1.5014354066985647) internal successors, (1569), 1050 states have internal predecessors, (1569), 500 states have call successors, (500), 16 states have call predecessors, (500), 16 states have return successors, (500), 495 states have call predecessors, (500), 500 states have call successors, (500) [2025-03-17 00:04:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2569 transitions. [2025-03-17 00:04:17,198 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2569 transitions. Word has length 467 [2025-03-17 00:04:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:17,214 INFO L471 AbstractCegarLoop]: Abstraction has 1562 states and 2569 transitions. [2025-03-17 00:04:17,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2569 transitions. [2025-03-17 00:04:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:17,217 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:17,217 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:17,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 00:04:17,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:17,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1687408723, now seen corresponding path program 1 times [2025-03-17 00:04:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551570728] [2025-03-17 00:04:17,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:17,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:17,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:17,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:17,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:17,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:17,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:17,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551570728] [2025-03-17 00:04:17,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551570728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:17,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:17,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:04:17,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003474380] [2025-03-17 00:04:17,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:17,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:04:17,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:17,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:04:17,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:04:17,594 INFO L87 Difference]: Start difference. First operand 1562 states and 2569 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:17,841 INFO L93 Difference]: Finished difference Result 4684 states and 7705 transitions. [2025-03-17 00:04:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:04:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:17,860 INFO L225 Difference]: With dead ends: 4684 [2025-03-17 00:04:17,860 INFO L226 Difference]: Without dead ends: 3123 [2025-03-17 00:04:17,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:04:17,867 INFO L435 NwaCegarLoop]: 359 mSDtfsCounter, 213 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:17,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 715 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:04:17,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2025-03-17 00:04:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3121. [2025-03-17 00:04:18,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 2088 states have (on average 1.4980842911877394) internal successors, (3128), 2098 states have internal predecessors, (3128), 1000 states have call successors, (1000), 32 states have call predecessors, (1000), 32 states have return successors, (1000), 990 states have call predecessors, (1000), 1000 states have call successors, (1000) [2025-03-17 00:04:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5128 transitions. [2025-03-17 00:04:18,078 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5128 transitions. Word has length 467 [2025-03-17 00:04:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:18,079 INFO L471 AbstractCegarLoop]: Abstraction has 3121 states and 5128 transitions. [2025-03-17 00:04:18,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5128 transitions. [2025-03-17 00:04:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:18,082 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:18,083 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:18,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 00:04:18,083 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:18,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1688332244, now seen corresponding path program 1 times [2025-03-17 00:04:18,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:18,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83106069] [2025-03-17 00:04:18,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:18,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:18,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:18,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:18,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:18,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:18,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:18,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83106069] [2025-03-17 00:04:18,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83106069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:18,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:18,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:04:18,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038062192] [2025-03-17 00:04:18,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:18,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:04:18,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:18,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:04:18,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:04:18,536 INFO L87 Difference]: Start difference. First operand 3121 states and 5128 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:19,358 INFO L93 Difference]: Finished difference Result 10719 states and 17635 transitions. [2025-03-17 00:04:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:04:19,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:19,404 INFO L225 Difference]: With dead ends: 10719 [2025-03-17 00:04:19,404 INFO L226 Difference]: Without dead ends: 7599 [2025-03-17 00:04:19,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:04:19,418 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 754 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:19,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1078 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 00:04:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2025-03-17 00:04:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 7587. [2025-03-17 00:04:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 5194 states have (on average 1.5013477088948788) internal successors, (7798), 5222 states have internal predecessors, (7798), 2312 states have call successors, (2312), 80 states have call predecessors, (2312), 80 states have return successors, (2312), 2284 states have call predecessors, (2312), 2312 states have call successors, (2312) [2025-03-17 00:04:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 12422 transitions. [2025-03-17 00:04:19,893 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 12422 transitions. Word has length 467 [2025-03-17 00:04:19,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:19,894 INFO L471 AbstractCegarLoop]: Abstraction has 7587 states and 12422 transitions. [2025-03-17 00:04:19,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 12422 transitions. [2025-03-17 00:04:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:19,903 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:19,904 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:19,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 00:04:19,904 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:19,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1279508019, now seen corresponding path program 1 times [2025-03-17 00:04:19,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:19,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208731896] [2025-03-17 00:04:19,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:19,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:20,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:20,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:20,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 138 proven. 87 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2025-03-17 00:04:21,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:21,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208731896] [2025-03-17 00:04:21,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208731896] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:04:21,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529847350] [2025-03-17 00:04:21,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:21,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:21,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:04:21,081 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) [2025-03-17 00:04:21,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 00:04:21,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:21,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:21,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:21,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:21,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 00:04:21,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:04:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4443 proven. 57 refuted. 0 times theorem prover too weak. 6900 trivial. 0 not checked. [2025-03-17 00:04:21,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 00:04:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 168 proven. 57 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2025-03-17 00:04:22,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529847350] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 00:04:22,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 00:04:22,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 14 [2025-03-17 00:04:22,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808320064] [2025-03-17 00:04:22,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 00:04:22,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 00:04:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:22,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 00:04:22,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2025-03-17 00:04:22,048 INFO L87 Difference]: Start difference. First operand 7587 states and 12422 transitions. Second operand has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2025-03-17 00:04:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:28,870 INFO L93 Difference]: Finished difference Result 26113 states and 42099 transitions. [2025-03-17 00:04:28,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-03-17 00:04:28,871 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) Word has length 467 [2025-03-17 00:04:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:28,977 INFO L225 Difference]: With dead ends: 26113 [2025-03-17 00:04:28,977 INFO L226 Difference]: Without dead ends: 18527 [2025-03-17 00:04:29,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 940 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=876, Invalid=3030, Unknown=0, NotChecked=0, Total=3906 [2025-03-17 00:04:29,005 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 3436 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 3051 mSolverCounterSat, 2827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3440 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 5878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2827 IncrementalHoareTripleChecker+Valid, 3051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:29,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3440 Valid, 2524 Invalid, 5878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2827 Valid, 3051 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-17 00:04:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2025-03-17 00:04:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 12660. [2025-03-17 00:04:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12660 states, 8826 states have (on average 1.4769997733967823) internal successors, (13036), 8891 states have internal predecessors, (13036), 3644 states have call successors, (3644), 189 states have call predecessors, (3644), 189 states have return successors, (3644), 3579 states have call predecessors, (3644), 3644 states have call successors, (3644) [2025-03-17 00:04:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12660 states to 12660 states and 20324 transitions. [2025-03-17 00:04:30,265 INFO L78 Accepts]: Start accepts. Automaton has 12660 states and 20324 transitions. Word has length 467 [2025-03-17 00:04:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:30,266 INFO L471 AbstractCegarLoop]: Abstraction has 12660 states and 20324 transitions. [2025-03-17 00:04:30,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2025-03-17 00:04:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 12660 states and 20324 transitions. [2025-03-17 00:04:30,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:30,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:30,272 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:30,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 00:04:30,476 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,SelfDestructingSolverStorable7 [2025-03-17 00:04:30,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:30,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash 97183729, now seen corresponding path program 1 times [2025-03-17 00:04:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:30,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660229008] [2025-03-17 00:04:30,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:30,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:30,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:30,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:30,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:30,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660229008] [2025-03-17 00:04:30,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660229008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:30,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:30,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 00:04:30,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684814797] [2025-03-17 00:04:30,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:30,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 00:04:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:30,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 00:04:30,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 00:04:30,924 INFO L87 Difference]: Start difference. First operand 12660 states and 20324 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:36,127 INFO L93 Difference]: Finished difference Result 65620 states and 105823 transitions. [2025-03-17 00:04:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 00:04:36,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:36,389 INFO L225 Difference]: With dead ends: 65620 [2025-03-17 00:04:36,389 INFO L226 Difference]: Without dead ends: 52772 [2025-03-17 00:04:36,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-17 00:04:36,438 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 1921 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:36,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1921 Valid, 1738 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 00:04:36,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52772 states. [2025-03-17 00:04:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52772 to 29254. [2025-03-17 00:04:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29254 states, 21400 states have (on average 1.5107943925233644) internal successors, (32331), 21535 states have internal predecessors, (32331), 7470 states have call successors, (7470), 383 states have call predecessors, (7470), 383 states have return successors, (7470), 7335 states have call predecessors, (7470), 7470 states have call successors, (7470) [2025-03-17 00:04:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29254 states to 29254 states and 47271 transitions. [2025-03-17 00:04:39,813 INFO L78 Accepts]: Start accepts. Automaton has 29254 states and 47271 transitions. Word has length 467 [2025-03-17 00:04:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:39,814 INFO L471 AbstractCegarLoop]: Abstraction has 29254 states and 47271 transitions. [2025-03-17 00:04:39,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 29254 states and 47271 transitions. [2025-03-17 00:04:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:39,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:39,826 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:39,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 00:04:39,826 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:39,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash 607280596, now seen corresponding path program 1 times [2025-03-17 00:04:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:39,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731862601] [2025-03-17 00:04:39,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:39,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:39,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:39,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:39,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:39,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:40,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:40,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731862601] [2025-03-17 00:04:40,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731862601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:40,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:40,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:04:40,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193231426] [2025-03-17 00:04:40,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:40,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:04:40,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:40,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:04:40,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:04:40,007 INFO L87 Difference]: Start difference. First operand 29254 states and 47271 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:44,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:44,022 INFO L93 Difference]: Finished difference Result 80544 states and 130383 transitions. [2025-03-17 00:04:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:04:44,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:04:44,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:44,233 INFO L225 Difference]: With dead ends: 80544 [2025-03-17 00:04:44,233 INFO L226 Difference]: Without dead ends: 51398 [2025-03-17 00:04:44,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:04:44,301 INFO L435 NwaCegarLoop]: 814 mSDtfsCounter, 483 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:44,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1480 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 00:04:44,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51398 states. [2025-03-17 00:04:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51398 to 43246. [2025-03-17 00:04:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43246 states, 31736 states have (on average 1.513958911015881) internal successors, (48047), 31927 states have internal predecessors, (48047), 10950 states have call successors, (10950), 559 states have call predecessors, (10950), 559 states have return successors, (10950), 10759 states have call predecessors, (10950), 10950 states have call successors, (10950) [2025-03-17 00:04:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43246 states to 43246 states and 69947 transitions. [2025-03-17 00:04:47,903 INFO L78 Accepts]: Start accepts. Automaton has 43246 states and 69947 transitions. Word has length 467 [2025-03-17 00:04:47,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:47,904 INFO L471 AbstractCegarLoop]: Abstraction has 43246 states and 69947 transitions. [2025-03-17 00:04:47,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:04:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 43246 states and 69947 transitions. [2025-03-17 00:04:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:47,915 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:47,915 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:47,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 00:04:47,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:47,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash 351903605, now seen corresponding path program 1 times [2025-03-17 00:04:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914328438] [2025-03-17 00:04:47,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:47,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:47,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:47,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:47,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:48,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914328438] [2025-03-17 00:04:48,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914328438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:48,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:48,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 00:04:48,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164159824] [2025-03-17 00:04:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:48,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 00:04:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:48,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 00:04:48,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 00:04:48,120 INFO L87 Difference]: Start difference. First operand 43246 states and 69947 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-17 00:04:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:53,860 INFO L93 Difference]: Finished difference Result 91444 states and 147859 transitions. [2025-03-17 00:04:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 00:04:53,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 467 [2025-03-17 00:04:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:54,155 INFO L225 Difference]: With dead ends: 91444 [2025-03-17 00:04:54,155 INFO L226 Difference]: Without dead ends: 62298 [2025-03-17 00:04:54,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-17 00:04:54,263 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 931 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:54,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1785 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 00:04:54,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62298 states. [2025-03-17 00:04:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62298 to 43640. [2025-03-17 00:04:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43640 states, 32129 states have (on average 1.5161380684117152) internal successors, (48712), 32320 states have internal predecessors, (48712), 10950 states have call successors, (10950), 560 states have call predecessors, (10950), 560 states have return successors, (10950), 10759 states have call predecessors, (10950), 10950 states have call successors, (10950) [2025-03-17 00:04:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43640 states to 43640 states and 70612 transitions. [2025-03-17 00:04:58,303 INFO L78 Accepts]: Start accepts. Automaton has 43640 states and 70612 transitions. Word has length 467 [2025-03-17 00:04:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:58,304 INFO L471 AbstractCegarLoop]: Abstraction has 43640 states and 70612 transitions. [2025-03-17 00:04:58,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-17 00:04:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 43640 states and 70612 transitions. [2025-03-17 00:04:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:04:58,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:58,316 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:58,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 00:04:58,316 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:58,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -645168748, now seen corresponding path program 1 times [2025-03-17 00:04:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:58,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025527598] [2025-03-17 00:04:58,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:58,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:04:58,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:04:58,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:58,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:04:59,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:59,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025527598] [2025-03-17 00:04:59,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025527598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:59,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:59,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 00:04:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444646010] [2025-03-17 00:04:59,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:59,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 00:04:59,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:59,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 00:04:59,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 00:04:59,219 INFO L87 Difference]: Start difference. First operand 43640 states and 70612 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-17 00:05:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:05:06,831 INFO L93 Difference]: Finished difference Result 127694 states and 207030 transitions. [2025-03-17 00:05:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 00:05:06,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 467 [2025-03-17 00:05:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:05:07,125 INFO L225 Difference]: With dead ends: 127694 [2025-03-17 00:05:07,126 INFO L226 Difference]: Without dead ends: 84166 [2025-03-17 00:05:07,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-17 00:05:07,240 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 2088 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 00:05:07,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 1758 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 00:05:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84166 states. [2025-03-17 00:05:12,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84166 to 61028. [2025-03-17 00:05:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61028 states, 47548 states have (on average 1.5507487170858922) internal successors, (73735), 47787 states have internal predecessors, (73735), 12822 states have call successors, (12822), 657 states have call predecessors, (12822), 657 states have return successors, (12822), 12583 states have call predecessors, (12822), 12822 states have call successors, (12822) [2025-03-17 00:05:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61028 states to 61028 states and 99379 transitions. [2025-03-17 00:05:12,448 INFO L78 Accepts]: Start accepts. Automaton has 61028 states and 99379 transitions. Word has length 467 [2025-03-17 00:05:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:05:12,449 INFO L471 AbstractCegarLoop]: Abstraction has 61028 states and 99379 transitions. [2025-03-17 00:05:12,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-17 00:05:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 61028 states and 99379 transitions. [2025-03-17 00:05:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2025-03-17 00:05:12,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:05:12,462 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:05:12,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 00:05:12,462 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:05:12,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:05:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash -614148941, now seen corresponding path program 1 times [2025-03-17 00:05:12,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:05:12,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253973081] [2025-03-17 00:05:12,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:05:12,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:05:12,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 467 statements into 1 equivalence classes. [2025-03-17 00:05:12,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 467 of 467 statements. [2025-03-17 00:05:12,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:05:12,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:05:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2025-03-17 00:05:12,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:05:12,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253973081] [2025-03-17 00:05:12,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253973081] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:05:12,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:05:12,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 00:05:12,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049705293] [2025-03-17 00:05:12,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:05:12,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 00:05:12,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:05:12,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 00:05:12,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:05:12,863 INFO L87 Difference]: Start difference. First operand 61028 states and 99379 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2025-03-17 00:05:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:05:22,890 INFO L93 Difference]: Finished difference Result 163652 states and 266556 transitions. [2025-03-17 00:05:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 00:05:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2025-03-17 00:05:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:05:23,264 INFO L225 Difference]: With dead ends: 163652 [2025-03-17 00:05:23,264 INFO L226 Difference]: Without dead ends: 102740 [2025-03-17 00:05:23,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 00:05:23,410 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 466 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 00:05:23,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1287 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 00:05:23,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102740 states.