./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_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 ef5fa028017d876074069fbbea93055df8f895424627b4673992e11de8e7d01a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 18:36:37,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 18:36:37,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 18:36:37,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 18:36:37,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 18:36:37,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 18:36:37,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 18:36:37,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 18:36:37,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 18:36:37,230 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 18:36:37,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 18:36:37,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 18:36:37,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 18:36:37,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 18:36:37,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 18:36:37,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 18:36:37,233 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 18:36:37,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:36:37,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 18:36:37,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 18:36:37,234 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 -> ef5fa028017d876074069fbbea93055df8f895424627b4673992e11de8e7d01a [2025-03-03 18:36:37,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 18:36:37,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 18:36:37,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 18:36:37,470 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 18:36:37,471 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 18:36:37,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-34.i [2025-03-03 18:36:38,609 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68844ddcd/f1b771ea10574d4696b3d21dbec01f81/FLAG42e21cb96 [2025-03-03 18:36:38,849 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 18:36:38,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-34.i [2025-03-03 18:36:38,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68844ddcd/f1b771ea10574d4696b3d21dbec01f81/FLAG42e21cb96 [2025-03-03 18:36:39,173 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68844ddcd/f1b771ea10574d4696b3d21dbec01f81 [2025-03-03 18:36:39,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 18:36:39,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 18:36:39,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 18:36:39,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 18:36:39,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 18:36:39,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcacdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39, skipping insertion in model container [2025-03-03 18:36:39,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,191 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 18:36:39,277 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_dependencies_file-34.i[919,932] [2025-03-03 18:36:39,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:36:39,322 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 18:36:39,328 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_dependencies_file-34.i[919,932] [2025-03-03 18:36:39,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:36:39,356 INFO L204 MainTranslator]: Completed translation [2025-03-03 18:36:39,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39 WrapperNode [2025-03-03 18:36:39,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 18:36:39,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 18:36:39,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 18:36:39,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 18:36:39,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,391 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 166 [2025-03-03 18:36:39,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 18:36:39,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 18:36:39,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 18:36:39,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 18:36:39,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,404 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,425 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 18:36:39,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,434 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 18:36:39,439 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 18:36:39,439 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 18:36:39,439 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 18:36:39,440 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (1/1) ... [2025-03-03 18:36:39,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:36:39,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:36:39,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 18:36:39,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 18:36:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 18:36:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 18:36:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 18:36:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 18:36:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 18:36:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 18:36:39,535 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 18:36:39,537 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 18:36:39,826 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L118: havoc property_#t~bitwise13#1;havoc property_#t~ite15#1;havoc property_#t~bitwise14#1;havoc property_#t~short16#1; [2025-03-03 18:36:39,844 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-03 18:36:39,844 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 18:36:39,860 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 18:36:39,860 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 18:36:39,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:36:39 BoogieIcfgContainer [2025-03-03 18:36:39,861 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 18:36:39,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 18:36:39,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 18:36:39,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 18:36:39,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 06:36:39" (1/3) ... [2025-03-03 18:36:39,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c60319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:36:39, skipping insertion in model container [2025-03-03 18:36:39,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:36:39" (2/3) ... [2025-03-03 18:36:39,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c60319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:36:39, skipping insertion in model container [2025-03-03 18:36:39,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:36:39" (3/3) ... [2025-03-03 18:36:39,867 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-34.i [2025-03-03 18:36:39,879 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 18:36:39,881 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_dependencies_file-34.i that has 2 procedures, 68 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 18:36:39,922 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 18:36:39,930 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;@6971928, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 18:36:39,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 18:36:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 52 states have (on average 1.5) internal successors, (78), 53 states have internal predecessors, (78), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-03 18:36:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-03 18:36:39,941 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:39,941 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:39,941 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:39,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1593965798, now seen corresponding path program 1 times [2025-03-03 18:36:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554614511] [2025-03-03 18:36:39,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:40,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 18:36:40,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 18:36:40,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:40,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:36:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:36:40,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:36:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554614511] [2025-03-03 18:36:40,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554614511] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:36:40,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:36:40,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:36:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260829746] [2025-03-03 18:36:40,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:36:40,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:36:40,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:36:40,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:36:40,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:36:40,498 INFO L87 Difference]: Start difference. First operand has 68 states, 52 states have (on average 1.5) internal successors, (78), 53 states have internal predecessors, (78), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:36:40,675 INFO L93 Difference]: Finished difference Result 220 states and 373 transitions. [2025-03-03 18:36:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:36:40,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2025-03-03 18:36:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:36:40,687 INFO L225 Difference]: With dead ends: 220 [2025-03-03 18:36:40,687 INFO L226 Difference]: Without dead ends: 155 [2025-03-03 18:36:40,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:36:40,693 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 125 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:36:40,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 299 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:36:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-03 18:36:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2025-03-03 18:36:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 98 states have internal predecessors, (143), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-03 18:36:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 195 transitions. [2025-03-03 18:36:40,740 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 195 transitions. Word has length 92 [2025-03-03 18:36:40,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:36:40,741 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 195 transitions. [2025-03-03 18:36:40,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 195 transitions. [2025-03-03 18:36:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-03 18:36:40,744 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:40,745 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:40,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 18:36:40,745 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:40,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1193707330, now seen corresponding path program 1 times [2025-03-03 18:36:40,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:40,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625850722] [2025-03-03 18:36:40,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:40,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:40,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 18:36:40,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 18:36:40,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:40,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:36:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:36:40,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:36:40,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625850722] [2025-03-03 18:36:40,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625850722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:36:40,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:36:40,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:36:40,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587180358] [2025-03-03 18:36:40,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:36:40,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:36:40,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:36:40,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:36:40,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:36:40,943 INFO L87 Difference]: Start difference. First operand 127 states and 195 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:36:41,123 INFO L93 Difference]: Finished difference Result 406 states and 619 transitions. [2025-03-03 18:36:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 18:36:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2025-03-03 18:36:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:36:41,126 INFO L225 Difference]: With dead ends: 406 [2025-03-03 18:36:41,126 INFO L226 Difference]: Without dead ends: 282 [2025-03-03 18:36:41,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:36:41,129 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 158 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:36:41,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 256 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:36:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2025-03-03 18:36:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 129. [2025-03-03 18:36:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.43) internal successors, (143), 100 states have internal predecessors, (143), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-03 18:36:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 195 transitions. [2025-03-03 18:36:41,156 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 195 transitions. Word has length 93 [2025-03-03 18:36:41,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:36:41,157 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 195 transitions. [2025-03-03 18:36:41,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 195 transitions. [2025-03-03 18:36:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 18:36:41,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:41,160 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:41,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 18:36:41,161 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:41,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1775860471, now seen corresponding path program 1 times [2025-03-03 18:36:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:41,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760640837] [2025-03-03 18:36:41,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:41,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:41,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 18:36:41,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 18:36:41,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:41,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:36:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:36:43,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:36:43,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760640837] [2025-03-03 18:36:43,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760640837] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:36:43,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:36:43,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 18:36:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780052088] [2025-03-03 18:36:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:36:43,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 18:36:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:36:43,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 18:36:43,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:36:43,118 INFO L87 Difference]: Start difference. First operand 129 states and 195 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:36:43,506 INFO L93 Difference]: Finished difference Result 396 states and 596 transitions. [2025-03-03 18:36:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 18:36:43,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-03 18:36:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:36:43,508 INFO L225 Difference]: With dead ends: 396 [2025-03-03 18:36:43,508 INFO L226 Difference]: Without dead ends: 270 [2025-03-03 18:36:43,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-03 18:36:43,509 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 154 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 18:36:43,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 253 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 18:36:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-03-03 18:36:43,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 176. [2025-03-03 18:36:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 133 states have (on average 1.413533834586466) internal successors, (188), 133 states have internal predecessors, (188), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-03 18:36:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 266 transitions. [2025-03-03 18:36:43,540 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 266 transitions. Word has length 94 [2025-03-03 18:36:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:36:43,540 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 266 transitions. [2025-03-03 18:36:43,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 266 transitions. [2025-03-03 18:36:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 18:36:43,543 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:43,543 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:43,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 18:36:43,544 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:43,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -714233483, now seen corresponding path program 1 times [2025-03-03 18:36:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984730550] [2025-03-03 18:36:43,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:43,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 18:36:43,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 18:36:43,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:43,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:36:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:36:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:36:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984730550] [2025-03-03 18:36:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984730550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:36:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:36:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 18:36:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16405386] [2025-03-03 18:36:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:36:46,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 18:36:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:36:46,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 18:36:46,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-03 18:36:46,028 INFO L87 Difference]: Start difference. First operand 176 states and 266 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:36:47,337 INFO L93 Difference]: Finished difference Result 446 states and 655 transitions. [2025-03-03 18:36:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 18:36:47,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-03 18:36:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:36:47,340 INFO L225 Difference]: With dead ends: 446 [2025-03-03 18:36:47,340 INFO L226 Difference]: Without dead ends: 320 [2025-03-03 18:36:47,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-03 18:36:47,341 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 331 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 18:36:47,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 432 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 18:36:47,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2025-03-03 18:36:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 190. [2025-03-03 18:36:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 145 states have (on average 1.393103448275862) internal successors, (202), 145 states have internal predecessors, (202), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-03 18:36:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 280 transitions. [2025-03-03 18:36:47,357 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 280 transitions. Word has length 94 [2025-03-03 18:36:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:36:47,358 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 280 transitions. [2025-03-03 18:36:47,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 280 transitions. [2025-03-03 18:36:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 18:36:47,359 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:47,359 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:47,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 18:36:47,359 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:47,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1028576852, now seen corresponding path program 1 times [2025-03-03 18:36:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:47,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856747320] [2025-03-03 18:36:47,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:47,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 18:36:47,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 18:36:47,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:47,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:36:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:36:48,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:36:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856747320] [2025-03-03 18:36:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856747320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:36:48,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:36:48,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 18:36:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528513619] [2025-03-03 18:36:48,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:36:48,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 18:36:48,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:36:48,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 18:36:48,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 18:36:48,777 INFO L87 Difference]: Start difference. First operand 190 states and 280 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:36:49,568 INFO L93 Difference]: Finished difference Result 510 states and 746 transitions. [2025-03-03 18:36:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 18:36:49,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-03 18:36:49,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:36:49,570 INFO L225 Difference]: With dead ends: 510 [2025-03-03 18:36:49,570 INFO L226 Difference]: Without dead ends: 353 [2025-03-03 18:36:49,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-03-03 18:36:49,571 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 260 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 18:36:49,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 340 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 18:36:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2025-03-03 18:36:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 279. [2025-03-03 18:36:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 234 states have (on average 1.4230769230769231) internal successors, (333), 234 states have internal predecessors, (333), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-03 18:36:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 411 transitions. [2025-03-03 18:36:49,603 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 411 transitions. Word has length 94 [2025-03-03 18:36:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:36:49,603 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 411 transitions. [2025-03-03 18:36:49,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 411 transitions. [2025-03-03 18:36:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 18:36:49,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:49,605 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:49,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 18:36:49,606 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:49,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1904943190, now seen corresponding path program 1 times [2025-03-03 18:36:49,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:49,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323149071] [2025-03-03 18:36:49,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:49,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:49,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 18:36:49,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 18:36:49,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:49,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:36:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:36:49,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:36:49,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323149071] [2025-03-03 18:36:49,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323149071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:36:49,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:36:49,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:36:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206494411] [2025-03-03 18:36:49,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:36:49,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:36:49,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:36:49,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:36:49,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:36:49,769 INFO L87 Difference]: Start difference. First operand 279 states and 411 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:36:49,929 INFO L93 Difference]: Finished difference Result 483 states and 706 transitions. [2025-03-03 18:36:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:36:49,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-03 18:36:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:36:49,931 INFO L225 Difference]: With dead ends: 483 [2025-03-03 18:36:49,931 INFO L226 Difference]: Without dead ends: 283 [2025-03-03 18:36:49,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:36:49,932 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 78 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:36:49,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 218 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:36:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-03-03 18:36:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 255. [2025-03-03 18:36:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 210 states have (on average 1.3761904761904762) internal successors, (289), 210 states have internal predecessors, (289), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-03 18:36:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 367 transitions. [2025-03-03 18:36:49,955 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 367 transitions. Word has length 94 [2025-03-03 18:36:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:36:49,955 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 367 transitions. [2025-03-03 18:36:49,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 367 transitions. [2025-03-03 18:36:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 18:36:49,956 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:49,957 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:49,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 18:36:49,957 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:49,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:49,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1729903590, now seen corresponding path program 1 times [2025-03-03 18:36:49,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:49,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729296005] [2025-03-03 18:36:49,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:49,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 18:36:49,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 18:36:49,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:49,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:36:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:36:50,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:36:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729296005] [2025-03-03 18:36:50,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729296005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:36:50,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:36:50,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 18:36:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992750115] [2025-03-03 18:36:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:36:50,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 18:36:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:36:50,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 18:36:50,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-03 18:36:50,809 INFO L87 Difference]: Start difference. First operand 255 states and 367 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:51,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:36:51,279 INFO L93 Difference]: Finished difference Result 652 states and 938 transitions. [2025-03-03 18:36:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 18:36:51,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-03 18:36:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:36:51,282 INFO L225 Difference]: With dead ends: 652 [2025-03-03 18:36:51,282 INFO L226 Difference]: Without dead ends: 512 [2025-03-03 18:36:51,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-03 18:36:51,283 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 193 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 18:36:51,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 564 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 18:36:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2025-03-03 18:36:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 283. [2025-03-03 18:36:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 238 states have (on average 1.3949579831932772) internal successors, (332), 238 states have internal predecessors, (332), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-03 18:36:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 410 transitions. [2025-03-03 18:36:51,302 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 410 transitions. Word has length 95 [2025-03-03 18:36:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:36:51,302 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 410 transitions. [2025-03-03 18:36:51,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:36:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 410 transitions. [2025-03-03 18:36:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 18:36:51,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:36:51,303 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:36:51,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 18:36:51,303 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:36:51,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:36:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -222351781, now seen corresponding path program 1 times [2025-03-03 18:36:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:36:51,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70655274] [2025-03-03 18:36:51,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:36:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:36:51,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 18:36:51,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 18:36:51,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:36:51,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:37:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:37:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:37:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70655274] [2025-03-03 18:37:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70655274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:37:14,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:37:14,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 18:37:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821662427] [2025-03-03 18:37:14,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:37:14,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 18:37:14,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:37:14,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 18:37:14,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 18:37:14,080 INFO L87 Difference]: Start difference. First operand 283 states and 410 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:37:14,592 INFO L93 Difference]: Finished difference Result 553 states and 800 transitions. [2025-03-03 18:37:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 18:37:14,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-03 18:37:14,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:37:14,594 INFO L225 Difference]: With dead ends: 553 [2025-03-03 18:37:14,594 INFO L226 Difference]: Without dead ends: 475 [2025-03-03 18:37:14,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-03 18:37:14,595 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 202 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 18:37:14,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1055 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 18:37:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-03 18:37:14,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 370. [2025-03-03 18:37:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 310 states have (on average 1.4) internal successors, (434), 310 states have internal predecessors, (434), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 18:37:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 538 transitions. [2025-03-03 18:37:14,620 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 538 transitions. Word has length 95 [2025-03-03 18:37:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:37:14,622 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 538 transitions. [2025-03-03 18:37:14,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 538 transitions. [2025-03-03 18:37:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 18:37:14,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:37:14,623 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:37:14,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 18:37:14,623 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:37:14,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:37:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 631055350, now seen corresponding path program 1 times [2025-03-03 18:37:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:37:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699142405] [2025-03-03 18:37:14,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:37:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:37:14,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 18:37:14,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 18:37:14,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:37:14,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:37:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:37:18,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:37:18,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699142405] [2025-03-03 18:37:18,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699142405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:37:18,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:37:18,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-03 18:37:18,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958000485] [2025-03-03 18:37:18,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:37:18,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 18:37:18,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:37:18,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 18:37:18,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-03 18:37:18,288 INFO L87 Difference]: Start difference. First operand 370 states and 538 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:37:19,683 INFO L93 Difference]: Finished difference Result 762 states and 1097 transitions. [2025-03-03 18:37:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 18:37:19,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-03 18:37:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:37:19,686 INFO L225 Difference]: With dead ends: 762 [2025-03-03 18:37:19,686 INFO L226 Difference]: Without dead ends: 535 [2025-03-03 18:37:19,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2025-03-03 18:37:19,687 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 438 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 18:37:19,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 554 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 18:37:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2025-03-03 18:37:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 368. [2025-03-03 18:37:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 308 states have (on average 1.396103896103896) internal successors, (430), 308 states have internal predecessors, (430), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 18:37:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 534 transitions. [2025-03-03 18:37:19,717 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 534 transitions. Word has length 95 [2025-03-03 18:37:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:37:19,717 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 534 transitions. [2025-03-03 18:37:19,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:19,718 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 534 transitions. [2025-03-03 18:37:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 18:37:19,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:37:19,718 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:37:19,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 18:37:19,719 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:37:19,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:37:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1518559031, now seen corresponding path program 1 times [2025-03-03 18:37:19,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:37:19,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810385811] [2025-03-03 18:37:19,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:37:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:37:19,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 18:37:19,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 18:37:19,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:37:19,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:37:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:37:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:37:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810385811] [2025-03-03 18:37:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810385811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:37:19,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:37:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 18:37:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586943949] [2025-03-03 18:37:19,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:37:19,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 18:37:19,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:37:19,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 18:37:19,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 18:37:19,760 INFO L87 Difference]: Start difference. First operand 368 states and 534 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:37:19,824 INFO L93 Difference]: Finished difference Result 887 states and 1302 transitions. [2025-03-03 18:37:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 18:37:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-03 18:37:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:37:19,827 INFO L225 Difference]: With dead ends: 887 [2025-03-03 18:37:19,827 INFO L226 Difference]: Without dead ends: 599 [2025-03-03 18:37:19,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 18:37:19,828 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 37 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 18:37:19,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 185 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 18:37:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2025-03-03 18:37:19,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 517. [2025-03-03 18:37:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 457 states have (on average 1.4201312910284465) internal successors, (649), 457 states have internal predecessors, (649), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 18:37:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 753 transitions. [2025-03-03 18:37:19,851 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 753 transitions. Word has length 95 [2025-03-03 18:37:19,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:37:19,851 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 753 transitions. [2025-03-03 18:37:19,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 753 transitions. [2025-03-03 18:37:19,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 18:37:19,852 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:37:19,852 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:37:19,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 18:37:19,852 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:37:19,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:37:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash 125496725, now seen corresponding path program 1 times [2025-03-03 18:37:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:37:19,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931457229] [2025-03-03 18:37:19,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:37:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:37:19,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 18:37:19,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 18:37:19,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:37:19,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:37:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:37:44,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:37:44,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931457229] [2025-03-03 18:37:44,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931457229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:37:44,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:37:44,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-03 18:37:44,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736469002] [2025-03-03 18:37:44,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:37:44,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-03 18:37:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:37:44,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-03 18:37:44,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-03 18:37:44,371 INFO L87 Difference]: Start difference. First operand 517 states and 753 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:37:46,576 INFO L93 Difference]: Finished difference Result 866 states and 1258 transitions. [2025-03-03 18:37:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 18:37:46,577 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-03 18:37:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:37:46,579 INFO L225 Difference]: With dead ends: 866 [2025-03-03 18:37:46,579 INFO L226 Difference]: Without dead ends: 652 [2025-03-03 18:37:46,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2025-03-03 18:37:46,581 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 355 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-03 18:37:46,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 773 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-03 18:37:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2025-03-03 18:37:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 513. [2025-03-03 18:37:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 453 states have (on average 1.4194260485651213) internal successors, (643), 453 states have internal predecessors, (643), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 18:37:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 747 transitions. [2025-03-03 18:37:46,613 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 747 transitions. Word has length 95 [2025-03-03 18:37:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:37:46,614 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 747 transitions. [2025-03-03 18:37:46,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:37:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 747 transitions. [2025-03-03 18:37:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-03 18:37:46,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:37:46,619 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:37:46,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 18:37:46,620 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:37:46,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:37:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1083222004, now seen corresponding path program 1 times [2025-03-03 18:37:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:37:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114639893] [2025-03-03 18:37:46,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:37:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:37:46,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 18:37:46,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 18:37:46,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:37:46,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:38:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-03 18:38:09,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:38:09,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114639893] [2025-03-03 18:38:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114639893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:38:09,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:38:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-03 18:38:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959203897] [2025-03-03 18:38:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:38:09,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 18:38:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:38:09,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 18:38:09,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-03-03 18:38:09,445 INFO L87 Difference]: Start difference. First operand 513 states and 747 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:38:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:38:10,628 INFO L93 Difference]: Finished difference Result 1166 states and 1696 transitions. [2025-03-03 18:38:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 18:38:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2025-03-03 18:38:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:38:10,631 INFO L225 Difference]: With dead ends: 1166 [2025-03-03 18:38:10,632 INFO L226 Difference]: Without dead ends: 840 [2025-03-03 18:38:10,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2025-03-03 18:38:10,633 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 250 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-03 18:38:10,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 819 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-03 18:38:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2025-03-03 18:38:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 545. [2025-03-03 18:38:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 485 states have (on average 1.4247422680412372) internal successors, (691), 485 states have internal predecessors, (691), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-03 18:38:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 795 transitions. [2025-03-03 18:38:10,657 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 795 transitions. Word has length 96 [2025-03-03 18:38:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:38:10,657 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 795 transitions. [2025-03-03 18:38:10,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 18:38:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 795 transitions. [2025-03-03 18:38:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-03 18:38:10,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:38:10,658 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 18:38:10,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 18:38:10,659 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:38:10,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:38:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash 577663379, now seen corresponding path program 1 times [2025-03-03 18:38:10,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:38:10,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359278144] [2025-03-03 18:38:10,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:38:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:38:10,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 18:38:10,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 18:38:10,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:38:10,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat