./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 64bit --witnessprinter.graph.data.programhash 93e64a210ad8295ef3e6c8bf5a4996e01ec752ae44f5068490e5115d4dda29b5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:31:12,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:31:12,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-01-10 01:31:12,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:31:12,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:31:12,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:31:12,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:31:12,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:31:12,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:31:12,553 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:31:12,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:31:12,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:31:12,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:31:12,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:31:12,555 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:31:12,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:31:12,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 01:31:12,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:31:12,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:31:12,556 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:31:12,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:31:12,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:31:12,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 01:31:12,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:31:12,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:31:12,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:31:12,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:31:12,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:31:12,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:31:12,558 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-jdk21/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93e64a210ad8295ef3e6c8bf5a4996e01ec752ae44f5068490e5115d4dda29b5 [2025-01-10 01:31:12,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:31:12,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:31:12,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:31:12,857 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:31:12,857 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:31:12,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2025-01-10 01:31:14,236 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a184f0267/66c44c91fd914515856e57cea005f60b/FLAG863877bef [2025-01-10 01:31:14,489 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:31:14,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2025-01-10 01:31:14,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a184f0267/66c44c91fd914515856e57cea005f60b/FLAG863877bef [2025-01-10 01:31:14,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a184f0267/66c44c91fd914515856e57cea005f60b [2025-01-10 01:31:14,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:31:14,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:31:14,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:31:14,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:31:14,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:31:14,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1863095e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14, skipping insertion in model container [2025-01-10 01:31:14,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:31:14,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:31:14,687 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:31:14,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:31:14,715 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:31:14,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14 WrapperNode [2025-01-10 01:31:14,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:31:14,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:31:14,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:31:14,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:31:14,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,744 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-01-10 01:31:14,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:31:14,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:31:14,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:31:14,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:31:14,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,766 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]. [2025-01-10 01:31:14,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,770 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:31:14,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:31:14,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:31:14,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:31:14,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (1/1) ... [2025-01-10 01:31:14,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:31:14,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:31:14,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 01:31:14,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 01:31:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:31:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2025-01-10 01:31:14,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2025-01-10 01:31:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:31:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2025-01-10 01:31:14,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2025-01-10 01:31:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:31:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:31:14,898 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:31:14,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:31:15,035 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-01-10 01:31:15,036 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:31:15,045 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:31:15,045 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:31:15,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:31:15 BoogieIcfgContainer [2025-01-10 01:31:15,046 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:31:15,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:31:15,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:31:15,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:31:15,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:31:14" (1/3) ... [2025-01-10 01:31:15,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ffb7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:31:15, skipping insertion in model container [2025-01-10 01:31:15,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:14" (2/3) ... [2025-01-10 01:31:15,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ffb7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:31:15, skipping insertion in model container [2025-01-10 01:31:15,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:31:15" (3/3) ... [2025-01-10 01:31:15,053 INFO L128 eAbstractionObserver]: Analyzing ICFG EvenOdd01-2.c [2025-01-10 01:31:15,066 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:31:15,067 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG EvenOdd01-2.c that has 3 procedures, 33 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-01-10 01:31:15,109 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:31:15,119 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;@59f7bca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:31:15,120 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 01:31:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 states have internal predecessors, (33), 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) [2025-01-10 01:31:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-10 01:31:15,130 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:15,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:31:15,131 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:15,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash -591146757, now seen corresponding path program 1 times [2025-01-10 01:31:15,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:15,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821200182] [2025-01-10 01:31:15,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:15,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 01:31:15,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 01:31:15,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:15,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:15,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821200182] [2025-01-10 01:31:15,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821200182] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:31:15,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:31:15,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:31:15,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725491021] [2025-01-10 01:31:15,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:31:15,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:31:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:15,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:31:15,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:31:15,363 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 states have internal predecessors, (33), 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 2.3333333333333335) internal successors, (7), 4 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) [2025-01-10 01:31:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:15,476 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2025-01-10 01:31:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:31:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2025-01-10 01:31:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:15,485 INFO L225 Difference]: With dead ends: 50 [2025-01-10 01:31:15,485 INFO L226 Difference]: Without dead ends: 27 [2025-01-10 01:31:15,490 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 [2025-01-10 01:31:15,493 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 01:31:15,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 114 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 01:31:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-10 01:31:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2025-01-10 01:31:15,520 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) [2025-01-10 01:31:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2025-01-10 01:31:15,526 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2025-01-10 01:31:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:15,527 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2025-01-10 01:31:15,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2025-01-10 01:31:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2025-01-10 01:31:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-10 01:31:15,528 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:15,529 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:31:15,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:31:15,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:15,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1145680225, now seen corresponding path program 1 times [2025-01-10 01:31:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807246640] [2025-01-10 01:31:15,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:15,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 01:31:15,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 01:31:15,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:15,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:15,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807246640] [2025-01-10 01:31:15,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807246640] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:31:15,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:31:15,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:31:15,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202257585] [2025-01-10 01:31:15,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:31:15,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:31:15,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:15,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:31:15,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:31:15,621 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-01-10 01:31:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:15,661 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2025-01-10 01:31:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:31:15,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2025-01-10 01:31:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:15,662 INFO L225 Difference]: With dead ends: 27 [2025-01-10 01:31:15,662 INFO L226 Difference]: Without dead ends: 26 [2025-01-10 01:31:15,662 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 [2025-01-10 01:31:15,663 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 55 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 [2025-01-10 01:31:15,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 55 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 01:31:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-10 01:31:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2025-01-10 01:31:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 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) [2025-01-10 01:31:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2025-01-10 01:31:15,667 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 9 [2025-01-10 01:31:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:15,667 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2025-01-10 01:31:15,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-01-10 01:31:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2025-01-10 01:31:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-10 01:31:15,668 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:15,668 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:31:15,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:31:15,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:15,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1411844509, now seen corresponding path program 1 times [2025-01-10 01:31:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:15,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328176606] [2025-01-10 01:31:15,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:15,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 01:31:15,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:31:15,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:15,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:15,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:15,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328176606] [2025-01-10 01:31:15,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328176606] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:31:15,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:31:15,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 01:31:15,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820623484] [2025-01-10 01:31:15,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:31:15,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:31:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:15,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:31:15,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:31:15,800 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2025-01-10 01:31:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:15,897 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2025-01-10 01:31:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:31:15,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2025-01-10 01:31:15,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:15,898 INFO L225 Difference]: With dead ends: 34 [2025-01-10 01:31:15,898 INFO L226 Difference]: Without dead ends: 33 [2025-01-10 01:31:15,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:31:15,900 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 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 [2025-01-10 01:31:15,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 01:31:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-01-10 01:31:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2025-01-10 01:31:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 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) [2025-01-10 01:31:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2025-01-10 01:31:15,909 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 14 [2025-01-10 01:31:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:15,909 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2025-01-10 01:31:15,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2025-01-10 01:31:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2025-01-10 01:31:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 01:31:15,909 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:15,910 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:31:15,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 01:31:15,910 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:15,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash 817506861, now seen corresponding path program 1 times [2025-01-10 01:31:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:15,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116423751] [2025-01-10 01:31:15,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:15,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:15,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 01:31:15,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 01:31:15,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:15,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116423751] [2025-01-10 01:31:16,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116423751] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:31:16,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:31:16,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 01:31:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235456167] [2025-01-10 01:31:16,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:31:16,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:31:16,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:16,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:31:16,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:31:16,034 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2025-01-10 01:31:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:16,098 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2025-01-10 01:31:16,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:31:16,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2025-01-10 01:31:16,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:16,099 INFO L225 Difference]: With dead ends: 30 [2025-01-10 01:31:16,099 INFO L226 Difference]: Without dead ends: 28 [2025-01-10 01:31:16,100 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 [2025-01-10 01:31:16,101 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 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 [2025-01-10 01:31:16,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 01:31:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-10 01:31:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-10 01:31:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 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) [2025-01-10 01:31:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2025-01-10 01:31:16,105 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2025-01-10 01:31:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:16,105 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2025-01-10 01:31:16,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2025-01-10 01:31:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2025-01-10 01:31:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-10 01:31:16,106 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:16,106 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:31:16,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:31:16,107 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:16,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 814713805, now seen corresponding path program 1 times [2025-01-10 01:31:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523168600] [2025-01-10 01:31:16,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:16,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 01:31:16,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 01:31:16,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:16,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523168600] [2025-01-10 01:31:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523168600] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:31:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229056112] [2025-01-10 01:31:16,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:16,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:16,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:31:16,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:31:16,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 01:31:16,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 01:31:16,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 01:31:16,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:16,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:16,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:31:16,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:31:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:16,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:31:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229056112] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:31:16,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:31:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-01-10 01:31:16,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792247455] [2025-01-10 01:31:16,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:31:16,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 01:31:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:16,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 01:31:16,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:31:16,488 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 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) [2025-01-10 01:31:16,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:16,631 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2025-01-10 01:31:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 01:31:16,631 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 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 20 [2025-01-10 01:31:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:16,632 INFO L225 Difference]: With dead ends: 50 [2025-01-10 01:31:16,632 INFO L226 Difference]: Without dead ends: 48 [2025-01-10 01:31:16,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-01-10 01:31:16,633 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 01:31:16,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 67 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 01:31:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-10 01:31:16,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2025-01-10 01:31:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 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) [2025-01-10 01:31:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2025-01-10 01:31:16,640 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 20 [2025-01-10 01:31:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:16,640 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2025-01-10 01:31:16,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 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) [2025-01-10 01:31:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2025-01-10 01:31:16,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-10 01:31:16,641 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:16,641 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 01:31:16,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 01:31:16,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:16,842 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:16,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1485747903, now seen corresponding path program 1 times [2025-01-10 01:31:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900269672] [2025-01-10 01:31:16,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:16,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 01:31:16,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 01:31:16,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:16,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:17,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:17,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900269672] [2025-01-10 01:31:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900269672] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:31:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726115714] [2025-01-10 01:31:17,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:31:17,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:17,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:31:17,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:31:17,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 01:31:17,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 01:31:17,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 01:31:17,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:31:17,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:17,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:31:17,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:31:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:17,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:31:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726115714] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:31:17,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:31:17,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2025-01-10 01:31:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094965903] [2025-01-10 01:31:17,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:31:17,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-10 01:31:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:17,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-10 01:31:17,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2025-01-10 01:31:17,503 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 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) [2025-01-10 01:31:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:17,834 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2025-01-10 01:31:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-10 01:31:17,834 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 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 38 [2025-01-10 01:31:17,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:17,835 INFO L225 Difference]: With dead ends: 92 [2025-01-10 01:31:17,835 INFO L226 Difference]: Without dead ends: 90 [2025-01-10 01:31:17,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2025-01-10 01:31:17,838 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 130 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 01:31:17,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 67 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 01:31:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-10 01:31:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2025-01-10 01:31:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 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) [2025-01-10 01:31:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2025-01-10 01:31:17,856 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 38 [2025-01-10 01:31:17,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:17,856 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2025-01-10 01:31:17,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 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) [2025-01-10 01:31:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2025-01-10 01:31:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-10 01:31:17,858 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:17,858 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2025-01-10 01:31:17,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 01:31:18,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:18,059 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:18,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash 419769575, now seen corresponding path program 2 times [2025-01-10 01:31:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:18,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103575451] [2025-01-10 01:31:18,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:31:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:18,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-10 01:31:18,089 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-10 01:31:18,089 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:31:18,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:18,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:18,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103575451] [2025-01-10 01:31:18,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103575451] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:31:18,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051333905] [2025-01-10 01:31:18,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:31:18,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:31:18,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:31:18,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 01:31:18,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-10 01:31:18,785 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-10 01:31:18,785 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:31:18,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:18,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-10 01:31:18,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:31:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:18,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:31:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051333905] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:31:19,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:31:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2025-01-10 01:31:19,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991714825] [2025-01-10 01:31:19,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:31:19,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-01-10 01:31:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:19,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-01-10 01:31:19,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2025-01-10 01:31:19,708 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 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) [2025-01-10 01:31:20,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:20,518 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2025-01-10 01:31:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-01-10 01:31:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 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 80 [2025-01-10 01:31:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:20,520 INFO L225 Difference]: With dead ends: 170 [2025-01-10 01:31:20,520 INFO L226 Difference]: Without dead ends: 168 [2025-01-10 01:31:20,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2025-01-10 01:31:20,524 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 330 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 01:31:20,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 110 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 01:31:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-01-10 01:31:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2025-01-10 01:31:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 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) [2025-01-10 01:31:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2025-01-10 01:31:20,540 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 80 [2025-01-10 01:31:20,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:20,540 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2025-01-10 01:31:20,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 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) [2025-01-10 01:31:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2025-01-10 01:31:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-10 01:31:20,544 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:20,544 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2025-01-10 01:31:20,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 01:31:20,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:20,745 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:20,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash 127234933, now seen corresponding path program 2 times [2025-01-10 01:31:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209557673] [2025-01-10 01:31:20,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:31:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:20,758 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 158 statements into 2 equivalence classes. [2025-01-10 01:31:20,782 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 158 of 158 statements. [2025-01-10 01:31:20,782 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:31:20,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209557673] [2025-01-10 01:31:22,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209557673] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:31:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311551210] [2025-01-10 01:31:22,427 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:31:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:31:22,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:31:22,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 01:31:22,463 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 158 statements into 2 equivalence classes. [2025-01-10 01:31:22,498 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 158 of 158 statements. [2025-01-10 01:31:22,498 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:31:22,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:22,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-01-10 01:31:22,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:31:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:22,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:31:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:24,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311551210] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:31:24,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:31:24,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2025-01-10 01:31:24,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337721847] [2025-01-10 01:31:24,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:31:24,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2025-01-10 01:31:24,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:24,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2025-01-10 01:31:24,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2025-01-10 01:31:24,680 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 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) [2025-01-10 01:31:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:26,572 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2025-01-10 01:31:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2025-01-10 01:31:26,576 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 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 158 [2025-01-10 01:31:26,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:26,578 INFO L225 Difference]: With dead ends: 332 [2025-01-10 01:31:26,578 INFO L226 Difference]: Without dead ends: 330 [2025-01-10 01:31:26,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2025-01-10 01:31:26,584 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 670 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 01:31:26,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 127 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 01:31:26,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-01-10 01:31:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2025-01-10 01:31:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 273 states have internal predecessors, (274), 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) [2025-01-10 01:31:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2025-01-10 01:31:26,613 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 158 [2025-01-10 01:31:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:26,615 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2025-01-10 01:31:26,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 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) [2025-01-10 01:31:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2025-01-10 01:31:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-01-10 01:31:26,619 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:26,619 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2025-01-10 01:31:26,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 01:31:26,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-10 01:31:26,822 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:26,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2143767729, now seen corresponding path program 3 times [2025-01-10 01:31:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728836278] [2025-01-10 01:31:26,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:31:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:26,833 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 320 statements into 27 equivalence classes. [2025-01-10 01:31:26,892 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 320 of 320 statements. [2025-01-10 01:31:26,892 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-01-10 01:31:26,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:32,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:31:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728836278] [2025-01-10 01:31:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728836278] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:31:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950140997] [2025-01-10 01:31:32,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:31:32,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:32,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:31:32,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:31:32,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 01:31:32,144 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 320 statements into 27 equivalence classes. [2025-01-10 01:31:32,226 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 320 of 320 statements. [2025-01-10 01:31:32,227 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-01-10 01:31:32,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:31:32,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 108 conjuncts are in the unsatisfiable core [2025-01-10 01:31:32,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:31:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:32,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:31:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:31:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950140997] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:31:38,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:31:38,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2025-01-10 01:31:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930010656] [2025-01-10 01:31:38,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:31:38,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2025-01-10 01:31:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:31:38,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2025-01-10 01:31:38,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2025-01-10 01:31:38,997 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 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) [2025-01-10 01:31:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 01:31:45,213 INFO L93 Difference]: Finished difference Result 650 states and 701 transitions. [2025-01-10 01:31:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2025-01-10 01:31:45,214 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 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 320 [2025-01-10 01:31:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 01:31:45,217 INFO L225 Difference]: With dead ends: 650 [2025-01-10 01:31:45,217 INFO L226 Difference]: Without dead ends: 648 [2025-01-10 01:31:45,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2025-01-10 01:31:45,224 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 2095 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-10 01:31:45,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 155 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-10 01:31:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-01-10 01:31:45,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2025-01-10 01:31:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 537 states have (on average 1.0037243947858474) internal successors, (539), 538 states have internal predecessors, (539), 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) [2025-01-10 01:31:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 646 transitions. [2025-01-10 01:31:45,261 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 646 transitions. Word has length 320 [2025-01-10 01:31:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 01:31:45,262 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 646 transitions. [2025-01-10 01:31:45,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 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) [2025-01-10 01:31:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 646 transitions. [2025-01-10 01:31:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2025-01-10 01:31:45,281 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:31:45,281 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1, 1, 1] [2025-01-10 01:31:45,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 01:31:45,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:31:45,482 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-01-10 01:31:45,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:31:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1120918459, now seen corresponding path program 3 times [2025-01-10 01:31:45,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:31:45,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835027929] [2025-01-10 01:31:45,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:31:45,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:31:45,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 638 statements into 53 equivalence classes. [2025-01-10 01:31:45,599 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) and asserted 638 of 638 statements. [2025-01-10 01:31:45,599 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2025-01-10 01:31:45,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:32:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:32:03,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:32:03,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835027929] [2025-01-10 01:32:03,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835027929] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:32:03,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354057063] [2025-01-10 01:32:03,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:32:03,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:32:03,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:32:03,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:32:03,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 01:32:03,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 638 statements into 53 equivalence classes. [2025-01-10 01:32:03,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) and asserted 638 of 638 statements. [2025-01-10 01:32:03,764 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2025-01-10 01:32:03,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:32:03,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 214 conjuncts are in the unsatisfiable core [2025-01-10 01:32:03,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:32:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:32:04,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:32:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:32:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354057063] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:32:27,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:32:27,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2025-01-10 01:32:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597280907] [2025-01-10 01:32:27,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:32:27,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2025-01-10 01:32:27,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:32:27,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2025-01-10 01:32:27,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2025-01-10 01:32:27,601 INFO L87 Difference]: Start difference. First operand 646 states and 646 transitions. Second operand has 428 states, 425 states have (on average 2.498823529411765) internal successors, (1062), 216 states have internal predecessors, (1062), 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)