./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/EvenOdd03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eda92234de2991558d0fa68c10405194bf8879d4d71f81bbe5c79bf2cf318fe2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 15:43:07,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 15:43:07,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 15:43:07,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 15:43:07,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 15:43:07,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 15:43:07,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 15:43:07,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 15:43:07,530 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 15:43:07,530 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 15:43:07,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 15:43:07,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 15:43:07,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 15:43:07,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 15:43:07,531 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 15:43:07,532 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:43:07,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 15:43:07,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 15:43:07,533 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 ! overflow) ) 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 -> eda92234de2991558d0fa68c10405194bf8879d4d71f81bbe5c79bf2cf318fe2 [2025-03-17 15:43:07,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 15:43:07,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 15:43:07,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 15:43:07,779 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 15:43:07,780 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 15:43:07,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd03.c [2025-03-17 15:43:08,890 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b844365c6/33897ec8246e4540824752aed0f50a77/FLAGbf61d8eb5 [2025-03-17 15:43:09,071 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 15:43:09,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd03.c [2025-03-17 15:43:09,077 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b844365c6/33897ec8246e4540824752aed0f50a77/FLAGbf61d8eb5 [2025-03-17 15:43:09,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b844365c6/33897ec8246e4540824752aed0f50a77 [2025-03-17 15:43:09,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 15:43:09,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 15:43:09,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 15:43:09,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 15:43:09,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 15:43:09,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c4da3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09, skipping insertion in model container [2025-03-17 15:43:09,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,471 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 15:43:09,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:43:09,585 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 15:43:09,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:43:09,610 INFO L204 MainTranslator]: Completed translation [2025-03-17 15:43:09,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09 WrapperNode [2025-03-17 15:43:09,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 15:43:09,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 15:43:09,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 15:43:09,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 15:43:09,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,632 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2025-03-17 15:43:09,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 15:43:09,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 15:43:09,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 15:43:09,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 15:43:09,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,656 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 15:43:09,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,658 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 15:43:09,661 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 15:43:09,661 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 15:43:09,661 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 15:43:09,662 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (1/1) ... [2025-03-17 15:43:09,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:43:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:43:09,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 15:43:09,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 15:43:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 15:43:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2025-03-17 15:43:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2025-03-17 15:43:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 15:43:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2025-03-17 15:43:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2025-03-17 15:43:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 15:43:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 15:43:09,750 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 15:43:09,752 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 15:43:09,816 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L34: havoc #t~ret5; [2025-03-17 15:43:09,834 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L24: havoc #t~ret4; [2025-03-17 15:43:09,879 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-17 15:43:09,879 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 15:43:09,885 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 15:43:09,886 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 15:43:09,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:43:09 BoogieIcfgContainer [2025-03-17 15:43:09,887 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 15:43:09,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 15:43:09,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 15:43:09,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 15:43:09,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:43:09" (1/3) ... [2025-03-17 15:43:09,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54586a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:43:09, skipping insertion in model container [2025-03-17 15:43:09,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:43:09" (2/3) ... [2025-03-17 15:43:09,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54586a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:43:09, skipping insertion in model container [2025-03-17 15:43:09,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:43:09" (3/3) ... [2025-03-17 15:43:09,896 INFO L128 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2025-03-17 15:43:09,908 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 15:43:09,910 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG EvenOdd03.c that has 3 procedures, 30 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-03-17 15:43:09,956 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 15:43:09,964 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;@7b00417c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 15:43:09,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 15:43:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.5) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 15:43:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 15:43:09,975 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:09,975 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:43:09,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:09,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash -542706105, now seen corresponding path program 1 times [2025-03-17 15:43:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:09,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094526082] [2025-03-17 15:43:09,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:10,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 15:43:10,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 15:43:10,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:10,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:10,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:10,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094526082] [2025-03-17 15:43:10,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094526082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:43:10,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:43:10,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 15:43:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697009491] [2025-03-17 15:43:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:43:10,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 15:43:10,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:10,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 15:43:10,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:43:10,172 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.5) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:10,254 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2025-03-17 15:43:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 15:43:10,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 15:43:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:10,260 INFO L225 Difference]: With dead ends: 46 [2025-03-17 15:43:10,260 INFO L226 Difference]: Without dead ends: 26 [2025-03-17 15:43:10,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 15:43:10,264 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:10,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 102 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:43:10,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-03-17 15:43:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2025-03-17 15:43:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2025-03-17 15:43:10,291 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2025-03-17 15:43:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:10,291 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2025-03-17 15:43:10,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2025-03-17 15:43:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 15:43:10,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:10,292 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:43:10,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 15:43:10,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:10,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 355979904, now seen corresponding path program 1 times [2025-03-17 15:43:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525759862] [2025-03-17 15:43:10,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:10,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 15:43:10,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 15:43:10,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:10,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:10,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:10,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525759862] [2025-03-17 15:43:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525759862] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:43:10,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:43:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 15:43:10,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696513722] [2025-03-17 15:43:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:43:10,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 15:43:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:10,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 15:43:10,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:43:10,344 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:10,389 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2025-03-17 15:43:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 15:43:10,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-17 15:43:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:10,390 INFO L225 Difference]: With dead ends: 26 [2025-03-17 15:43:10,390 INFO L226 Difference]: Without dead ends: 25 [2025-03-17 15:43:10,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 15:43:10,390 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:10,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:43:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-17 15:43:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-03-17 15:43:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2025-03-17 15:43:10,393 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2025-03-17 15:43:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:10,393 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2025-03-17 15:43:10,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2025-03-17 15:43:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-17 15:43:10,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:10,394 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:43:10,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 15:43:10,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:10,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash -911766396, now seen corresponding path program 1 times [2025-03-17 15:43:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332205106] [2025-03-17 15:43:10,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:10,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:10,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 15:43:10,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 15:43:10,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:10,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:10,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332205106] [2025-03-17 15:43:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332205106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:43:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:43:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 15:43:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676411483] [2025-03-17 15:43:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:43:10,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 15:43:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:10,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 15:43:10,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:43:10,466 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:10,544 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2025-03-17 15:43:10,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 15:43:10,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-17 15:43:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:10,544 INFO L225 Difference]: With dead ends: 33 [2025-03-17 15:43:10,544 INFO L226 Difference]: Without dead ends: 32 [2025-03-17 15:43:10,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-17 15:43:10,545 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:10,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:43:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-17 15:43:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-03-17 15:43:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2025-03-17 15:43:10,556 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 13 [2025-03-17 15:43:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:10,556 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2025-03-17 15:43:10,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,556 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2025-03-17 15:43:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-17 15:43:10,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:10,557 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:43:10,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 15:43:10,558 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:10,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1800012784, now seen corresponding path program 1 times [2025-03-17 15:43:10,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:10,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22728860] [2025-03-17 15:43:10,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:10,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 15:43:10,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 15:43:10,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:10,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22728860] [2025-03-17 15:43:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22728860] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:43:10,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:43:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 15:43:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638489410] [2025-03-17 15:43:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:43:10,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 15:43:10,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:10,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 15:43:10,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:43:10,637 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:10,684 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2025-03-17 15:43:10,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 15:43:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-17 15:43:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:10,685 INFO L225 Difference]: With dead ends: 29 [2025-03-17 15:43:10,685 INFO L226 Difference]: Without dead ends: 27 [2025-03-17 15:43:10,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-17 15:43:10,686 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:10,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 20 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:43:10,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-17 15:43:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-03-17 15:43:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2025-03-17 15:43:10,689 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2025-03-17 15:43:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:10,689 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2025-03-17 15:43:10,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2025-03-17 15:43:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-17 15:43:10,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:10,690 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:43:10,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 15:43:10,691 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:10,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash -880749354, now seen corresponding path program 1 times [2025-03-17 15:43:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:10,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977500487] [2025-03-17 15:43:10,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:10,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 15:43:10,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 15:43:10,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:10,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977500487] [2025-03-17 15:43:10,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977500487] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:43:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235664079] [2025-03-17 15:43:10,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:10,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:10,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:43:10,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:43:10,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 15:43:10,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 15:43:10,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 15:43:10,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:10,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:10,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 15:43:10,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:43:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:10,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:43:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:11,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235664079] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:43:11,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:43:11,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-03-17 15:43:11,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635109570] [2025-03-17 15:43:11,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:43:11,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 15:43:11,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:11,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 15:43:11,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-03-17 15:43:11,001 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:11,119 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2025-03-17 15:43:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 15:43:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-17 15:43:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:11,120 INFO L225 Difference]: With dead ends: 49 [2025-03-17 15:43:11,120 INFO L226 Difference]: Without dead ends: 47 [2025-03-17 15:43:11,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-03-17 15:43:11,121 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:11,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 53 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:43:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-03-17 15:43:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2025-03-17 15:43:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2025-03-17 15:43:11,132 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 19 [2025-03-17 15:43:11,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:11,132 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2025-03-17 15:43:11,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:11,132 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2025-03-17 15:43:11,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-17 15:43:11,133 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:11,133 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2025-03-17 15:43:11,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 15:43:11,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:11,334 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:11,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1924596574, now seen corresponding path program 1 times [2025-03-17 15:43:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725621305] [2025-03-17 15:43:11,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:11,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:11,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 15:43:11,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 15:43:11,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:11,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725621305] [2025-03-17 15:43:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725621305] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:43:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089463710] [2025-03-17 15:43:11,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:43:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:43:11,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:43:11,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 15:43:11,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 15:43:11,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 15:43:11,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:43:11,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:11,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 15:43:11,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:43:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:11,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:43:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:11,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089463710] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:43:11,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:43:11,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2025-03-17 15:43:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412752084] [2025-03-17 15:43:11,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:43:11,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 15:43:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:11,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 15:43:11,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2025-03-17 15:43:11,822 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 28 states, 25 states have (on average 2.44) internal successors, (61), 16 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:12,090 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2025-03-17 15:43:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-17 15:43:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.44) internal successors, (61), 16 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-03-17 15:43:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:12,091 INFO L225 Difference]: With dead ends: 91 [2025-03-17 15:43:12,091 INFO L226 Difference]: Without dead ends: 89 [2025-03-17 15:43:12,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2025-03-17 15:43:12,092 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 120 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:12,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 58 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:43:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-17 15:43:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2025-03-17 15:43:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2025-03-17 15:43:12,099 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 37 [2025-03-17 15:43:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:12,100 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2025-03-17 15:43:12,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.44) internal successors, (61), 16 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2025-03-17 15:43:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-17 15:43:12,101 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:12,101 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2025-03-17 15:43:12,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 15:43:12,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 15:43:12,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:12,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:12,305 INFO L85 PathProgramCache]: Analyzing trace with hash -548690911, now seen corresponding path program 2 times [2025-03-17 15:43:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:12,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762013876] [2025-03-17 15:43:12,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:43:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:12,311 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-03-17 15:43:12,321 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-03-17 15:43:12,321 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:43:12,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:12,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762013876] [2025-03-17 15:43:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762013876] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:43:12,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010654283] [2025-03-17 15:43:12,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:43:12,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:12,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:43:12,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:43:12,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 15:43:12,784 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-03-17 15:43:12,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-03-17 15:43:12,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:43:12,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:12,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 15:43:12,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:43:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:12,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:43:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:13,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010654283] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:43:13,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:43:13,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2025-03-17 15:43:13,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513678092] [2025-03-17 15:43:13,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:43:13,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-03-17 15:43:13,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:13,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-03-17 15:43:13,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2025-03-17 15:43:13,490 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 56 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 30 states have internal predecessors, (131), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:14,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:14,100 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2025-03-17 15:43:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-17 15:43:14,101 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 30 states have internal predecessors, (131), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-03-17 15:43:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:14,102 INFO L225 Difference]: With dead ends: 169 [2025-03-17 15:43:14,102 INFO L226 Difference]: Without dead ends: 167 [2025-03-17 15:43:14,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2025-03-17 15:43:14,105 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 365 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:14,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 89 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 15:43:14,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-03-17 15:43:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2025-03-17 15:43:14,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2025-03-17 15:43:14,126 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 79 [2025-03-17 15:43:14,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:14,126 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2025-03-17 15:43:14,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 30 states have internal predecessors, (131), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2025-03-17 15:43:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-17 15:43:14,131 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:14,131 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1] [2025-03-17 15:43:14,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 15:43:14,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:14,332 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:14,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1967159496, now seen corresponding path program 2 times [2025-03-17 15:43:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:14,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080794670] [2025-03-17 15:43:14,333 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:43:14,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:14,341 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 157 statements into 2 equivalence classes. [2025-03-17 15:43:14,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 157 of 157 statements. [2025-03-17 15:43:14,373 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:43:14,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:15,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080794670] [2025-03-17 15:43:15,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080794670] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:43:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578528636] [2025-03-17 15:43:15,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:43:15,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:15,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:43:15,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:43:15,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 15:43:15,623 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 157 statements into 2 equivalence classes. [2025-03-17 15:43:15,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 157 of 157 statements. [2025-03-17 15:43:15,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:43:15,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:15,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-17 15:43:15,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:43:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:15,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:43:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:17,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578528636] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:43:17,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:43:17,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2025-03-17 15:43:17,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893877712] [2025-03-17 15:43:17,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:43:17,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2025-03-17 15:43:17,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:17,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2025-03-17 15:43:17,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2025-03-17 15:43:17,394 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand has 108 states, 105 states have (on average 2.4857142857142858) internal successors, (261), 56 states have internal predecessors, (261), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:18,878 INFO L93 Difference]: Finished difference Result 331 states and 356 transitions. [2025-03-17 15:43:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2025-03-17 15:43:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.4857142857142858) internal successors, (261), 56 states have internal predecessors, (261), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2025-03-17 15:43:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:18,880 INFO L225 Difference]: With dead ends: 331 [2025-03-17 15:43:18,881 INFO L226 Difference]: Without dead ends: 329 [2025-03-17 15:43:18,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2025-03-17 15:43:18,885 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 745 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:18,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 110 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 15:43:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2025-03-17 15:43:18,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2025-03-17 15:43:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 271 states have (on average 1.007380073800738) internal successors, (273), 272 states have internal predecessors, (273), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2025-03-17 15:43:18,902 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 157 [2025-03-17 15:43:18,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:18,902 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2025-03-17 15:43:18,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.4857142857142858) internal successors, (261), 56 states have internal predecessors, (261), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2025-03-17 15:43:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-03-17 15:43:18,907 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:18,907 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1] [2025-03-17 15:43:18,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 15:43:19,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:19,108 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:19,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash 616142925, now seen corresponding path program 3 times [2025-03-17 15:43:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471674908] [2025-03-17 15:43:19,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:43:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:19,120 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 319 statements into 27 equivalence classes. [2025-03-17 15:43:19,167 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 319 of 319 statements. [2025-03-17 15:43:19,168 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-17 15:43:19,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:23,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:23,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471674908] [2025-03-17 15:43:23,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471674908] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:43:23,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136847491] [2025-03-17 15:43:23,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:43:23,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:43:23,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:43:23,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 15:43:23,085 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 319 statements into 27 equivalence classes. [2025-03-17 15:43:23,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 319 of 319 statements. [2025-03-17 15:43:23,152 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-17 15:43:23,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:23,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 108 conjuncts are in the unsatisfiable core [2025-03-17 15:43:23,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:43:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:23,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:43:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:28,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136847491] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:43:28,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:43:28,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2025-03-17 15:43:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391148325] [2025-03-17 15:43:28,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:43:28,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2025-03-17 15:43:28,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:43:28,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2025-03-17 15:43:28,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2025-03-17 15:43:28,371 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand has 216 states, 213 states have (on average 2.492957746478873) internal successors, (531), 110 states have internal predecessors, (531), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:43:33,387 INFO L93 Difference]: Finished difference Result 649 states and 700 transitions. [2025-03-17 15:43:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2025-03-17 15:43:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.492957746478873) internal successors, (531), 110 states have internal predecessors, (531), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 319 [2025-03-17 15:43:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:43:33,390 INFO L225 Difference]: With dead ends: 649 [2025-03-17 15:43:33,390 INFO L226 Difference]: Without dead ends: 647 [2025-03-17 15:43:33,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2025-03-17 15:43:33,396 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1750 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 15:43:33,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 209 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 15:43:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2025-03-17 15:43:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2025-03-17 15:43:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 536 states have (on average 1.0037313432835822) internal successors, (538), 537 states have internal predecessors, (538), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 645 transitions. [2025-03-17 15:43:33,423 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 645 transitions. Word has length 319 [2025-03-17 15:43:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:43:33,423 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 645 transitions. [2025-03-17 15:43:33,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.492957746478873) internal successors, (531), 110 states have internal predecessors, (531), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:43:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 645 transitions. [2025-03-17 15:43:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2025-03-17 15:43:33,434 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:43:33,434 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1, 1] [2025-03-17 15:43:33,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 15:43:33,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:33,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:43:33,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:43:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1967230352, now seen corresponding path program 3 times [2025-03-17 15:43:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:43:33,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26616073] [2025-03-17 15:43:33,638 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:43:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:43:33,649 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 637 statements into 53 equivalence classes. [2025-03-17 15:43:33,732 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) and asserted 637 of 637 statements. [2025-03-17 15:43:33,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2025-03-17 15:43:33,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:48,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:43:48,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26616073] [2025-03-17 15:43:48,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26616073] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:43:48,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626494880] [2025-03-17 15:43:48,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:43:48,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:43:48,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:43:48,317 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:43:48,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 15:43:48,355 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 637 statements into 53 equivalence classes. [2025-03-17 15:43:48,542 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) and asserted 637 of 637 statements. [2025-03-17 15:43:48,543 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2025-03-17 15:43:48,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:43:48,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 214 conjuncts are in the unsatisfiable core [2025-03-17 15:43:48,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:43:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:43:49,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:44:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:44:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626494880] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:44:07,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:44:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2025-03-17 15:44:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805499101] [2025-03-17 15:44:07,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:44:07,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2025-03-17 15:44:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:07,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2025-03-17 15:44:07,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2025-03-17 15:44:07,083 INFO L87 Difference]: Start difference. First operand 645 states and 645 transitions. Second operand has 428 states, 425 states have (on average 2.496470588235294) internal successors, (1061), 216 states have internal predecessors, (1061), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:44:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:27,603 INFO L93 Difference]: Finished difference Result 1291 states and 1396 transitions. [2025-03-17 15:44:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2025-03-17 15:44:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 2.496470588235294) internal successors, (1061), 216 states have internal predecessors, (1061), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 637 [2025-03-17 15:44:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:27,608 INFO L225 Difference]: With dead ends: 1291 [2025-03-17 15:44:27,609 INFO L226 Difference]: Without dead ends: 1289 [2025-03-17 15:44:27,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1698 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2025-03-17 15:44:27,623 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 4590 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4590 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:27,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4590 Valid, 119 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 15:44:27,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2025-03-17 15:44:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1287. [2025-03-17 15:44:27,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1071 states have (on average 1.0018674136321195) internal successors, (1073), 1072 states have internal predecessors, (1073), 214 states have call successors, (214), 214 states have call predecessors, (214), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:44:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1287 transitions. [2025-03-17 15:44:27,662 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1287 transitions. Word has length 637 [2025-03-17 15:44:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:27,662 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1287 transitions. [2025-03-17 15:44:27,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 2.496470588235294) internal successors, (1061), 216 states have internal predecessors, (1061), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:44:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1287 transitions. [2025-03-17 15:44:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1280 [2025-03-17 15:44:27,689 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:27,690 INFO L218 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1] [2025-03-17 15:44:27,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 15:44:27,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:27,894 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-03-17 15:44:27,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash 564451581, now seen corresponding path program 4 times [2025-03-17 15:44:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:27,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7028354] [2025-03-17 15:44:27,895 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 15:44:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:27,913 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1279 statements into 2 equivalence classes. [2025-03-17 15:44:28,305 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 1279 of 1279 statements. [2025-03-17 15:44:28,305 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 15:44:28,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat