./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_codestructure_steplocals_file-34.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 f39f68f55c90deb8496cdc58f18787083a238252dfdfe92f73d39acb627ae3ba --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 10:12:02,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 10:12:02,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 10:12:02,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 10:12:02,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 10:12:02,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 10:12:02,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 10:12:02,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 10:12:02,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 10:12:02,917 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 10:12:02,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 10:12:02,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 10:12:02,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 10:12:02,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 10:12:02,918 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 10:12:02,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 10:12:02,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 10:12:02,918 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 10:12:02,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 10:12:02,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 10:12:02,919 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 10:12:02,919 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 10:12:02,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 10:12:02,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 10:12:02,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 10:12:02,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 10:12:02,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 10:12:02,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 10:12:02,920 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 10:12:02,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 10:12:02,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 10:12:02,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 10:12:02,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 10:12:02,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 10:12:02,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 10:12:02,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 10:12:02,921 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 -> f39f68f55c90deb8496cdc58f18787083a238252dfdfe92f73d39acb627ae3ba [2025-03-08 10:12:03,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 10:12:03,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 10:12:03,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 10:12:03,129 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 10:12:03,129 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 10:12:03,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-34.i [2025-03-08 10:12:04,254 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d65e8baa/53c4c76147734de484ca0a3cd660a0f8/FLAGe40b62798 [2025-03-08 10:12:04,491 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 10:12:04,492 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-34.i [2025-03-08 10:12:04,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d65e8baa/53c4c76147734de484ca0a3cd660a0f8/FLAGe40b62798 [2025-03-08 10:12:04,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d65e8baa/53c4c76147734de484ca0a3cd660a0f8 [2025-03-08 10:12:04,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 10:12:04,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 10:12:04,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 10:12:04,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 10:12:04,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 10:12:04,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:12:04" (1/1) ... [2025-03-08 10:12:04,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b75528f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:04, skipping insertion in model container [2025-03-08 10:12:04,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:12:04" (1/1) ... [2025-03-08 10:12:04,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 10:12:04,943 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_codestructure_steplocals_file-34.i[917,930] [2025-03-08 10:12:04,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 10:12:04,987 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 10:12:04,994 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_codestructure_steplocals_file-34.i[917,930] [2025-03-08 10:12:05,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 10:12:05,035 INFO L204 MainTranslator]: Completed translation [2025-03-08 10:12:05,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05 WrapperNode [2025-03-08 10:12:05,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 10:12:05,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 10:12:05,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 10:12:05,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 10:12:05,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,066 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 199 [2025-03-08 10:12:05,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 10:12:05,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 10:12:05,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 10:12:05,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 10:12:05,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,092 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]. [2025-03-08 10:12:05,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,100 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 10:12:05,107 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 10:12:05,107 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 10:12:05,107 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 10:12:05,108 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (1/1) ... [2025-03-08 10:12:05,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 10:12:05,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:12:05,130 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) [2025-03-08 10:12:05,135 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 [2025-03-08 10:12:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 10:12:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 10:12:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 10:12:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 10:12:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 10:12:05,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 10:12:05,203 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 10:12:05,204 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 10:12:05,474 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L139: havoc property_#t~bitwise20#1;havoc property_#t~ite22#1;havoc property_#t~bitwise21#1;havoc property_#t~short23#1; [2025-03-08 10:12:05,505 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-03-08 10:12:05,506 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 10:12:05,525 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 10:12:05,525 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 10:12:05,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:12:05 BoogieIcfgContainer [2025-03-08 10:12:05,526 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 10:12:05,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 10:12:05,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 10:12:05,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 10:12:05,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:12:04" (1/3) ... [2025-03-08 10:12:05,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736d6add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:12:05, skipping insertion in model container [2025-03-08 10:12:05,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:12:05" (2/3) ... [2025-03-08 10:12:05,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736d6add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:12:05, skipping insertion in model container [2025-03-08 10:12:05,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:12:05" (3/3) ... [2025-03-08 10:12:05,535 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-34.i [2025-03-08 10:12:05,547 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 10:12:05,548 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_steplocals_file-34.i that has 2 procedures, 93 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 10:12:05,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 10:12:05,606 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;@5007def, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 10:12:05,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 10:12:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 64 states have internal predecessors, (89), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-08 10:12:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 10:12:05,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:05,625 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:05,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:05,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash 921798033, now seen corresponding path program 1 times [2025-03-08 10:12:05,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:05,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963116463] [2025-03-08 10:12:05,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:05,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:05,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 10:12:05,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 10:12:05,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:05,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2025-03-08 10:12:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963116463] [2025-03-08 10:12:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963116463] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 10:12:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606263075] [2025-03-08 10:12:05,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 10:12:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 10:12:05,923 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) [2025-03-08 10:12:05,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 10:12:05,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 10:12:06,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 10:12:06,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:06,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:06,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 10:12:06,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 10:12:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2025-03-08 10:12:06,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 10:12:06,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606263075] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:06,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 10:12:06,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 10:12:06,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973493499] [2025-03-08 10:12:06,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:06,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 10:12:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:06,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 10:12:06,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 10:12:06,090 INFO L87 Difference]: Start difference. First operand has 93 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 64 states have internal predecessors, (89), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-08 10:12:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:06,117 INFO L93 Difference]: Finished difference Result 180 states and 308 transitions. [2025-03-08 10:12:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 10:12:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 173 [2025-03-08 10:12:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:06,126 INFO L225 Difference]: With dead ends: 180 [2025-03-08 10:12:06,126 INFO L226 Difference]: Without dead ends: 90 [2025-03-08 10:12:06,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 10:12:06,134 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:06,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 10:12:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-03-08 10:12:06,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2025-03-08 10:12:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 61 states have internal predecessors, (84), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-08 10:12:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 138 transitions. [2025-03-08 10:12:06,166 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 138 transitions. Word has length 173 [2025-03-08 10:12:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:06,167 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 138 transitions. [2025-03-08 10:12:06,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-08 10:12:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 138 transitions. [2025-03-08 10:12:06,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 10:12:06,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:06,170 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:06,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 10:12:06,370 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 [2025-03-08 10:12:06,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:06,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1622066864, now seen corresponding path program 1 times [2025-03-08 10:12:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:06,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712801139] [2025-03-08 10:12:06,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:06,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 10:12:06,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 10:12:06,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:06,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:06,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:06,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712801139] [2025-03-08 10:12:06,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712801139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:06,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:06,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 10:12:06,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697700232] [2025-03-08 10:12:06,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:06,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 10:12:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:06,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 10:12:06,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 10:12:06,594 INFO L87 Difference]: Start difference. First operand 90 states and 138 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:06,641 INFO L93 Difference]: Finished difference Result 218 states and 334 transitions. [2025-03-08 10:12:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 10:12:06,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2025-03-08 10:12:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:06,645 INFO L225 Difference]: With dead ends: 218 [2025-03-08 10:12:06,646 INFO L226 Difference]: Without dead ends: 131 [2025-03-08 10:12:06,646 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 [2025-03-08 10:12:06,648 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 55 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:06,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 260 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 10:12:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-08 10:12:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 96. [2025-03-08 10:12:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-08 10:12:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 147 transitions. [2025-03-08 10:12:06,663 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 147 transitions. Word has length 173 [2025-03-08 10:12:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:06,665 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 147 transitions. [2025-03-08 10:12:06,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 147 transitions. [2025-03-08 10:12:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 10:12:06,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:06,668 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:06,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 10:12:06,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:06,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash -114515055, now seen corresponding path program 1 times [2025-03-08 10:12:06,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:06,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942125496] [2025-03-08 10:12:06,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:06,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:06,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 10:12:06,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 10:12:06,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:06,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:08,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:08,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942125496] [2025-03-08 10:12:08,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942125496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:08,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:08,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 10:12:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978839042] [2025-03-08 10:12:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:08,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 10:12:08,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:08,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 10:12:08,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-08 10:12:08,033 INFO L87 Difference]: Start difference. First operand 96 states and 147 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:08,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:08,319 INFO L93 Difference]: Finished difference Result 298 states and 449 transitions. [2025-03-08 10:12:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 10:12:08,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2025-03-08 10:12:08,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:08,321 INFO L225 Difference]: With dead ends: 298 [2025-03-08 10:12:08,321 INFO L226 Difference]: Without dead ends: 205 [2025-03-08 10:12:08,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-03-08 10:12:08,322 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 276 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:08,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 417 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 10:12:08,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-03-08 10:12:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 117. [2025-03-08 10:12:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-08 10:12:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 179 transitions. [2025-03-08 10:12:08,334 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 179 transitions. Word has length 173 [2025-03-08 10:12:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:08,335 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 179 transitions. [2025-03-08 10:12:08,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 179 transitions. [2025-03-08 10:12:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 10:12:08,339 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:08,339 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:08,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 10:12:08,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:08,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -625049232, now seen corresponding path program 1 times [2025-03-08 10:12:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92905914] [2025-03-08 10:12:08,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:08,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 10:12:08,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 10:12:08,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:08,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:17,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:17,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92905914] [2025-03-08 10:12:17,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92905914] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:17,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:17,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 10:12:17,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245650493] [2025-03-08 10:12:17,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:17,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 10:12:17,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:17,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 10:12:17,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-08 10:12:17,412 INFO L87 Difference]: Start difference. First operand 117 states and 179 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:17,732 INFO L93 Difference]: Finished difference Result 319 states and 480 transitions. [2025-03-08 10:12:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 10:12:17,733 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2025-03-08 10:12:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:17,735 INFO L225 Difference]: With dead ends: 319 [2025-03-08 10:12:17,736 INFO L226 Difference]: Without dead ends: 205 [2025-03-08 10:12:17,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-08 10:12:17,737 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 188 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:17,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 924 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 10:12:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-03-08 10:12:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 142. [2025-03-08 10:12:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 113 states have (on average 1.424778761061947) internal successors, (161), 113 states have internal predecessors, (161), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-08 10:12:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 215 transitions. [2025-03-08 10:12:17,755 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 215 transitions. Word has length 173 [2025-03-08 10:12:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:17,755 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 215 transitions. [2025-03-08 10:12:17,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 215 transitions. [2025-03-08 10:12:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:17,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:17,757 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:17,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 10:12:17,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:17,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1431858589, now seen corresponding path program 1 times [2025-03-08 10:12:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:17,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960479740] [2025-03-08 10:12:17,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:17,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:17,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:17,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:17,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:17,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:25,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:25,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960479740] [2025-03-08 10:12:25,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960479740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:25,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:25,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 10:12:25,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684082787] [2025-03-08 10:12:25,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:25,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 10:12:25,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:25,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 10:12:25,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-08 10:12:25,751 INFO L87 Difference]: Start difference. First operand 142 states and 215 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:26,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:26,190 INFO L93 Difference]: Finished difference Result 431 states and 648 transitions. [2025-03-08 10:12:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 10:12:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:12:26,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:26,193 INFO L225 Difference]: With dead ends: 431 [2025-03-08 10:12:26,193 INFO L226 Difference]: Without dead ends: 292 [2025-03-08 10:12:26,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-03-08 10:12:26,194 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 334 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:26,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 901 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 10:12:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2025-03-08 10:12:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 147. [2025-03-08 10:12:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 118 states have (on average 1.4152542372881356) internal successors, (167), 118 states have internal predecessors, (167), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-08 10:12:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 221 transitions. [2025-03-08 10:12:26,202 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 221 transitions. Word has length 174 [2025-03-08 10:12:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:26,202 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 221 transitions. [2025-03-08 10:12:26,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 221 transitions. [2025-03-08 10:12:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:26,205 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:26,206 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:26,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 10:12:26,206 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:26,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:26,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1942392766, now seen corresponding path program 1 times [2025-03-08 10:12:26,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:26,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68555446] [2025-03-08 10:12:26,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:26,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:26,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:26,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:26,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68555446] [2025-03-08 10:12:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68555446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:34,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-08 10:12:34,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660484292] [2025-03-08 10:12:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:34,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 10:12:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:34,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 10:12:34,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-08 10:12:34,868 INFO L87 Difference]: Start difference. First operand 147 states and 221 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:36,391 INFO L93 Difference]: Finished difference Result 541 states and 805 transitions. [2025-03-08 10:12:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 10:12:36,392 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:12:36,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:36,395 INFO L225 Difference]: With dead ends: 541 [2025-03-08 10:12:36,396 INFO L226 Difference]: Without dead ends: 397 [2025-03-08 10:12:36,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2025-03-08 10:12:36,397 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 501 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:36,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1178 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 10:12:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2025-03-08 10:12:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 303. [2025-03-08 10:12:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 246 states have (on average 1.4227642276422765) internal successors, (350), 246 states have internal predecessors, (350), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:12:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 458 transitions. [2025-03-08 10:12:36,425 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 458 transitions. Word has length 174 [2025-03-08 10:12:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:36,426 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 458 transitions. [2025-03-08 10:12:36,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 458 transitions. [2025-03-08 10:12:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:36,427 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:36,428 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:36,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 10:12:36,428 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:36,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash -199582431, now seen corresponding path program 1 times [2025-03-08 10:12:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:36,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132487895] [2025-03-08 10:12:36,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:36,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:36,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:36,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:36,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:36,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:44,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132487895] [2025-03-08 10:12:44,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132487895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:44,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:44,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-08 10:12:44,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460059700] [2025-03-08 10:12:44,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:44,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 10:12:44,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:44,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 10:12:44,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-03-08 10:12:44,538 INFO L87 Difference]: Start difference. First operand 303 states and 458 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-08 10:12:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:46,340 INFO L93 Difference]: Finished difference Result 724 states and 1070 transitions. [2025-03-08 10:12:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 10:12:46,341 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2025-03-08 10:12:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:46,344 INFO L225 Difference]: With dead ends: 724 [2025-03-08 10:12:46,344 INFO L226 Difference]: Without dead ends: 424 [2025-03-08 10:12:46,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2025-03-08 10:12:46,345 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 482 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:46,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1252 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 10:12:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2025-03-08 10:12:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 285. [2025-03-08 10:12:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 228 states have internal predecessors, (323), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:12:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 431 transitions. [2025-03-08 10:12:46,364 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 431 transitions. Word has length 174 [2025-03-08 10:12:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:46,365 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 431 transitions. [2025-03-08 10:12:46,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-08 10:12:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 431 transitions. [2025-03-08 10:12:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:46,366 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:46,367 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:46,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 10:12:46,367 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:46,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1840682814, now seen corresponding path program 1 times [2025-03-08 10:12:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:46,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696666071] [2025-03-08 10:12:46,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:46,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:46,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:46,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:46,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:46,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:46,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:46,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696666071] [2025-03-08 10:12:46,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696666071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:46,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:46,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 10:12:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455798265] [2025-03-08 10:12:46,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:46,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 10:12:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:46,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 10:12:46,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-08 10:12:46,956 INFO L87 Difference]: Start difference. First operand 285 states and 431 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:47,253 INFO L93 Difference]: Finished difference Result 801 states and 1203 transitions. [2025-03-08 10:12:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 10:12:47,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:12:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:47,256 INFO L225 Difference]: With dead ends: 801 [2025-03-08 10:12:47,256 INFO L226 Difference]: Without dead ends: 519 [2025-03-08 10:12:47,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-08 10:12:47,262 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 233 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:47,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 853 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 10:12:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-03-08 10:12:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 286. [2025-03-08 10:12:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 229 states have (on average 1.4192139737991267) internal successors, (325), 229 states have internal predecessors, (325), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:12:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 433 transitions. [2025-03-08 10:12:47,280 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 433 transitions. Word has length 174 [2025-03-08 10:12:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:47,280 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 433 transitions. [2025-03-08 10:12:47,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 433 transitions. [2025-03-08 10:12:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:47,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:47,282 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:47,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 10:12:47,282 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:47,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1943750305, now seen corresponding path program 1 times [2025-03-08 10:12:47,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:47,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158469712] [2025-03-08 10:12:47,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:47,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:47,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:47,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:47,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:47,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:54,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:54,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158469712] [2025-03-08 10:12:54,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158469712] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:54,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:54,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 10:12:54,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595293794] [2025-03-08 10:12:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:54,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 10:12:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:54,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 10:12:54,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-08 10:12:54,633 INFO L87 Difference]: Start difference. First operand 286 states and 433 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:55,046 INFO L93 Difference]: Finished difference Result 802 states and 1203 transitions. [2025-03-08 10:12:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 10:12:55,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:12:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:55,051 INFO L225 Difference]: With dead ends: 802 [2025-03-08 10:12:55,051 INFO L226 Difference]: Without dead ends: 519 [2025-03-08 10:12:55,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-08 10:12:55,052 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 156 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:55,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1135 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 10:12:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-03-08 10:12:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 268. [2025-03-08 10:12:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 211 states have (on average 1.4028436018957346) internal successors, (296), 211 states have internal predecessors, (296), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:12:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 404 transitions. [2025-03-08 10:12:55,070 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 404 transitions. Word has length 174 [2025-03-08 10:12:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:55,070 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 404 transitions. [2025-03-08 10:12:55,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 404 transitions. [2025-03-08 10:12:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:55,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:55,072 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:55,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 10:12:55,072 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:55,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1081061863, now seen corresponding path program 1 times [2025-03-08 10:12:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127850546] [2025-03-08 10:12:55,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:55,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:55,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:55,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:55,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:56,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127850546] [2025-03-08 10:12:56,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127850546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:56,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:56,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 10:12:56,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538389330] [2025-03-08 10:12:56,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:56,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 10:12:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:56,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 10:12:56,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-08 10:12:56,457 INFO L87 Difference]: Start difference. First operand 268 states and 404 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:57,088 INFO L93 Difference]: Finished difference Result 645 states and 961 transitions. [2025-03-08 10:12:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 10:12:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:12:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:57,090 INFO L225 Difference]: With dead ends: 645 [2025-03-08 10:12:57,090 INFO L226 Difference]: Without dead ends: 497 [2025-03-08 10:12:57,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-08 10:12:57,091 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 333 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:57,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 808 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 10:12:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2025-03-08 10:12:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 284. [2025-03-08 10:12:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 227 states have (on average 1.4140969162995596) internal successors, (321), 227 states have internal predecessors, (321), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:12:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 429 transitions. [2025-03-08 10:12:57,107 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 429 transitions. Word has length 174 [2025-03-08 10:12:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:57,108 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 429 transitions. [2025-03-08 10:12:57,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 429 transitions. [2025-03-08 10:12:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:57,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:57,111 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:57,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 10:12:57,111 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:57,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1471095098, now seen corresponding path program 1 times [2025-03-08 10:12:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:57,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298312850] [2025-03-08 10:12:57,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:57,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:57,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:57,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:57,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:12:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:12:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:12:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298312850] [2025-03-08 10:12:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298312850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:12:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:12:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 10:12:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286200270] [2025-03-08 10:12:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:12:58,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 10:12:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:12:58,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 10:12:58,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-08 10:12:58,532 INFO L87 Difference]: Start difference. First operand 284 states and 429 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:12:59,521 INFO L93 Difference]: Finished difference Result 675 states and 1009 transitions. [2025-03-08 10:12:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 10:12:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:12:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:12:59,525 INFO L225 Difference]: With dead ends: 675 [2025-03-08 10:12:59,525 INFO L226 Difference]: Without dead ends: 511 [2025-03-08 10:12:59,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-03-08 10:12:59,527 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 302 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 10:12:59,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 722 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 10:12:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2025-03-08 10:12:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 270. [2025-03-08 10:12:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 213 states have (on average 1.403755868544601) internal successors, (299), 213 states have internal predecessors, (299), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:12:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 407 transitions. [2025-03-08 10:12:59,543 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 407 transitions. Word has length 174 [2025-03-08 10:12:59,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:12:59,543 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 407 transitions. [2025-03-08 10:12:59,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:12:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 407 transitions. [2025-03-08 10:12:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:12:59,544 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:12:59,544 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:12:59,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 10:12:59,545 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:12:59,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:12:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash 570527686, now seen corresponding path program 1 times [2025-03-08 10:12:59,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:12:59,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513357459] [2025-03-08 10:12:59,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:12:59,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:12:59,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:12:59,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:12:59,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:12:59,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:07,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513357459] [2025-03-08 10:13:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513357459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:07,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:07,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 10:13:07,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198098360] [2025-03-08 10:13:07,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:07,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 10:13:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:07,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 10:13:07,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-08 10:13:07,526 INFO L87 Difference]: Start difference. First operand 270 states and 407 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:08,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:08,231 INFO L93 Difference]: Finished difference Result 647 states and 963 transitions. [2025-03-08 10:13:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 10:13:08,232 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:13:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:08,234 INFO L225 Difference]: With dead ends: 647 [2025-03-08 10:13:08,234 INFO L226 Difference]: Without dead ends: 497 [2025-03-08 10:13:08,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-03-08 10:13:08,235 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 371 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:08,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 828 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 10:13:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2025-03-08 10:13:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 287. [2025-03-08 10:13:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 230 states have (on average 1.4043478260869566) internal successors, (323), 230 states have internal predecessors, (323), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:13:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 431 transitions. [2025-03-08 10:13:08,251 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 431 transitions. Word has length 174 [2025-03-08 10:13:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:08,252 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 431 transitions. [2025-03-08 10:13:08,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 431 transitions. [2025-03-08 10:13:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:13:08,253 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:08,253 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:08,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 10:13:08,253 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:08,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1981629275, now seen corresponding path program 1 times [2025-03-08 10:13:08,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:08,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764877024] [2025-03-08 10:13:08,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:08,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:08,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:13:08,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:13:08,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:08,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:09,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:09,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764877024] [2025-03-08 10:13:09,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764877024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:09,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 10:13:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278990621] [2025-03-08 10:13:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:09,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 10:13:09,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:09,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 10:13:09,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-08 10:13:09,002 INFO L87 Difference]: Start difference. First operand 287 states and 431 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:09,719 INFO L93 Difference]: Finished difference Result 676 states and 1002 transitions. [2025-03-08 10:13:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 10:13:09,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:13:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:09,722 INFO L225 Difference]: With dead ends: 676 [2025-03-08 10:13:09,722 INFO L226 Difference]: Without dead ends: 509 [2025-03-08 10:13:09,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-08 10:13:09,723 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 266 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:09,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 834 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 10:13:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2025-03-08 10:13:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 289. [2025-03-08 10:13:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 232 states have (on average 1.4224137931034482) internal successors, (330), 232 states have internal predecessors, (330), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-08 10:13:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 438 transitions. [2025-03-08 10:13:09,735 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 438 transitions. Word has length 174 [2025-03-08 10:13:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:09,735 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 438 transitions. [2025-03-08 10:13:09,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:09,735 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 438 transitions. [2025-03-08 10:13:09,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 10:13:09,736 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:09,737 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:09,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 10:13:09,737 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:09,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 83989510, now seen corresponding path program 1 times [2025-03-08 10:13:09,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:09,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506261077] [2025-03-08 10:13:09,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:09,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 10:13:09,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 10:13:09,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:09,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:09,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:09,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506261077] [2025-03-08 10:13:09,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506261077] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:09,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:09,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 10:13:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512282773] [2025-03-08 10:13:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:09,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 10:13:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:09,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 10:13:09,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 10:13:09,860 INFO L87 Difference]: Start difference. First operand 289 states and 438 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:10,002 INFO L93 Difference]: Finished difference Result 567 states and 853 transitions. [2025-03-08 10:13:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 10:13:10,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2025-03-08 10:13:10,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:10,005 INFO L225 Difference]: With dead ends: 567 [2025-03-08 10:13:10,005 INFO L226 Difference]: Without dead ends: 398 [2025-03-08 10:13:10,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 10:13:10,006 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 68 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:10,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 369 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 10:13:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2025-03-08 10:13:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2025-03-08 10:13:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 327 states have (on average 1.4220183486238531) internal successors, (465), 329 states have internal predecessors, (465), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 10:13:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 589 transitions. [2025-03-08 10:13:10,023 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 589 transitions. Word has length 174 [2025-03-08 10:13:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:10,023 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 589 transitions. [2025-03-08 10:13:10,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 589 transitions. [2025-03-08 10:13:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 10:13:10,025 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:10,025 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:10,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 10:13:10,025 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:10,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1174999283, now seen corresponding path program 1 times [2025-03-08 10:13:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:10,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963468426] [2025-03-08 10:13:10,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:10,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 10:13:10,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 10:13:10,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:10,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:11,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963468426] [2025-03-08 10:13:11,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963468426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:11,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:11,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 10:13:11,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622584291] [2025-03-08 10:13:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:11,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 10:13:11,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:11,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 10:13:11,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-08 10:13:11,714 INFO L87 Difference]: Start difference. First operand 394 states and 589 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:13,192 INFO L93 Difference]: Finished difference Result 998 states and 1481 transitions. [2025-03-08 10:13:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 10:13:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2025-03-08 10:13:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:13,196 INFO L225 Difference]: With dead ends: 998 [2025-03-08 10:13:13,196 INFO L226 Difference]: Without dead ends: 735 [2025-03-08 10:13:13,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2025-03-08 10:13:13,200 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 549 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:13,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 734 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 10:13:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2025-03-08 10:13:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 408. [2025-03-08 10:13:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 341 states have (on average 1.4281524926686218) internal successors, (487), 343 states have internal predecessors, (487), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 10:13:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 611 transitions. [2025-03-08 10:13:13,216 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 611 transitions. Word has length 175 [2025-03-08 10:13:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:13,217 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 611 transitions. [2025-03-08 10:13:13,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 611 transitions. [2025-03-08 10:13:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 10:13:13,218 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:13,218 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:13,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 10:13:13,218 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:13,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1377157678, now seen corresponding path program 1 times [2025-03-08 10:13:13,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:13,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605486747] [2025-03-08 10:13:13,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:13,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:13,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 10:13:13,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 10:13:13,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:13,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:14,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:14,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605486747] [2025-03-08 10:13:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605486747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:14,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 10:13:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883625964] [2025-03-08 10:13:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:14,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 10:13:14,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:14,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 10:13:14,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-08 10:13:14,886 INFO L87 Difference]: Start difference. First operand 408 states and 611 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:16,058 INFO L93 Difference]: Finished difference Result 1011 states and 1499 transitions. [2025-03-08 10:13:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 10:13:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2025-03-08 10:13:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:16,061 INFO L225 Difference]: With dead ends: 1011 [2025-03-08 10:13:16,061 INFO L226 Difference]: Without dead ends: 734 [2025-03-08 10:13:16,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-03-08 10:13:16,062 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 333 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:16,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 902 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 10:13:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2025-03-08 10:13:16,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 392. [2025-03-08 10:13:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 325 states have (on average 1.4215384615384616) internal successors, (462), 327 states have internal predecessors, (462), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 10:13:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 586 transitions. [2025-03-08 10:13:16,075 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 586 transitions. Word has length 175 [2025-03-08 10:13:16,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:16,075 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 586 transitions. [2025-03-08 10:13:16,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 586 transitions. [2025-03-08 10:13:16,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 10:13:16,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:16,077 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:16,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 10:13:16,077 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:16,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash 664465106, now seen corresponding path program 1 times [2025-03-08 10:13:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389188469] [2025-03-08 10:13:16,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:16,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 10:13:16,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 10:13:16,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:16,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:23,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389188469] [2025-03-08 10:13:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389188469] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:23,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:23,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 10:13:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41528085] [2025-03-08 10:13:23,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:23,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 10:13:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:23,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 10:13:23,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-03-08 10:13:23,976 INFO L87 Difference]: Start difference. First operand 392 states and 586 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:25,168 INFO L93 Difference]: Finished difference Result 1018 states and 1507 transitions. [2025-03-08 10:13:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 10:13:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2025-03-08 10:13:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:25,172 INFO L225 Difference]: With dead ends: 1018 [2025-03-08 10:13:25,172 INFO L226 Difference]: Without dead ends: 757 [2025-03-08 10:13:25,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-03-08 10:13:25,173 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 291 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:25,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1339 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 10:13:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2025-03-08 10:13:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 395. [2025-03-08 10:13:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 328 states have (on average 1.420731707317073) internal successors, (466), 330 states have internal predecessors, (466), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 10:13:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 590 transitions. [2025-03-08 10:13:25,188 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 590 transitions. Word has length 175 [2025-03-08 10:13:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:25,188 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 590 transitions. [2025-03-08 10:13:25,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 590 transitions. [2025-03-08 10:13:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 10:13:25,189 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:25,189 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:25,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 10:13:25,190 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:25,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1670556400, now seen corresponding path program 1 times [2025-03-08 10:13:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574339232] [2025-03-08 10:13:25,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:25,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:25,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 10:13:25,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 10:13:25,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:25,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:25,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:25,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574339232] [2025-03-08 10:13:25,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574339232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:25,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:25,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 10:13:25,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554205693] [2025-03-08 10:13:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:25,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 10:13:25,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:25,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 10:13:25,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 10:13:25,262 INFO L87 Difference]: Start difference. First operand 395 states and 590 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:25,373 INFO L93 Difference]: Finished difference Result 665 states and 993 transitions. [2025-03-08 10:13:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 10:13:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2025-03-08 10:13:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:25,376 INFO L225 Difference]: With dead ends: 665 [2025-03-08 10:13:25,376 INFO L226 Difference]: Without dead ends: 401 [2025-03-08 10:13:25,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 10:13:25,377 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 66 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:25,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 378 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 10:13:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2025-03-08 10:13:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395. [2025-03-08 10:13:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 328 states have (on average 1.420731707317073) internal successors, (466), 330 states have internal predecessors, (466), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 10:13:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 590 transitions. [2025-03-08 10:13:25,388 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 590 transitions. Word has length 175 [2025-03-08 10:13:25,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:25,389 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 590 transitions. [2025-03-08 10:13:25,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 590 transitions. [2025-03-08 10:13:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 10:13:25,390 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:25,390 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:25,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 10:13:25,390 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:25,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -639636051, now seen corresponding path program 1 times [2025-03-08 10:13:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266365822] [2025-03-08 10:13:25,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:25,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 10:13:25,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 10:13:25,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:25,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 10:13:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2025-03-08 10:13:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 10:13:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266365822] [2025-03-08 10:13:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266365822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 10:13:26,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 10:13:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 10:13:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618858798] [2025-03-08 10:13:26,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 10:13:26,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 10:13:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 10:13:26,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 10:13:26,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-08 10:13:26,229 INFO L87 Difference]: Start difference. First operand 395 states and 590 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 10:13:26,935 INFO L93 Difference]: Finished difference Result 884 states and 1316 transitions. [2025-03-08 10:13:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 10:13:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2025-03-08 10:13:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 10:13:26,938 INFO L225 Difference]: With dead ends: 884 [2025-03-08 10:13:26,938 INFO L226 Difference]: Without dead ends: 620 [2025-03-08 10:13:26,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 10:13:26,939 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 209 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 10:13:26,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 767 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 10:13:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2025-03-08 10:13:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 396. [2025-03-08 10:13:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 329 states have (on average 1.419452887537994) internal successors, (467), 331 states have internal predecessors, (467), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 10:13:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 591 transitions. [2025-03-08 10:13:26,952 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 591 transitions. Word has length 176 [2025-03-08 10:13:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 10:13:26,953 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 591 transitions. [2025-03-08 10:13:26,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-08 10:13:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 591 transitions. [2025-03-08 10:13:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 10:13:26,954 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 10:13:26,954 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 10:13:26,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 10:13:26,954 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 10:13:26,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 10:13:26,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1636708404, now seen corresponding path program 1 times [2025-03-08 10:13:26,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 10:13:26,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67458472] [2025-03-08 10:13:26,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 10:13:26,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 10:13:26,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 10:13:26,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 10:13:26,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 10:13:26,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat