./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:13:59,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:13:59,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-14 03:13:59,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:13:59,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:13:59,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:13:59,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:13:59,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:13:59,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:13:59,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:13:59,215 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:13:59,215 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:13:59,216 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:13:59,216 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:13:59,216 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:13:59,216 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:13:59,216 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:13:59,216 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:13:59,216 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:13:59,217 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:13:59,217 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:13:59,217 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:13:59,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:13:59,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:13:59,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:13:59,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:13:59,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:13:59,220 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:13:59,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:13:59,220 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a [2024-11-14 03:13:59,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:13:59,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:13:59,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:13:59,606 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:13:59,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:13:59,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c Unable to find full path for "g++" [2024-11-14 03:14:01,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:14:01,915 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:14:01,917 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2024-11-14 03:14:01,927 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/data/d2c076b21/e5efb562983b48a9a89700513f7d0b9d/FLAG48d5391aa [2024-11-14 03:14:01,957 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/data/d2c076b21/e5efb562983b48a9a89700513f7d0b9d [2024-11-14 03:14:01,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:14:01,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:14:01,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:14:01,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:14:01,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:14:01,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:14:01" (1/1) ... [2024-11-14 03:14:01,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc67f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:01, skipping insertion in model container [2024-11-14 03:14:01,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:14:01" (1/1) ... [2024-11-14 03:14:02,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:14:02,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:14:02,226 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:14:02,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:14:02,258 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:14:02,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02 WrapperNode [2024-11-14 03:14:02,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:14:02,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:14:02,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:14:02,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:14:02,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,289 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2024-11-14 03:14:02,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:14:02,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:14:02,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:14:02,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:14:02,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:14:02,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:14:02,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:14:02,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:14:02,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (1/1) ... [2024-11-14 03:14:02,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:14:02,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:02,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:14:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:14:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:14:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:14:02,493 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:14:02,495 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:14:02,679 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-14 03:14:02,680 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:14:02,719 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:14:02,719 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:14:02,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:14:02 BoogieIcfgContainer [2024-11-14 03:14:02,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:14:02,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:14:02,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:14:02,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:14:02,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:14:01" (1/3) ... [2024-11-14 03:14:02,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9a69f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:14:02, skipping insertion in model container [2024-11-14 03:14:02,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:14:02" (2/3) ... [2024-11-14 03:14:02,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9a69f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:14:02, skipping insertion in model container [2024-11-14 03:14:02,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:14:02" (3/3) ... [2024-11-14 03:14:02,733 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random2d.c [2024-11-14 03:14:02,751 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:14:02,754 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG AliasDarteFeautrierGonnord-SAS2010-random2d.c that has 1 procedures, 28 locations, 1 initial locations, 1 loop locations, and 10 error locations. [2024-11-14 03:14:02,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:14:02,842 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=FINITE_AUTOMATA, 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;@2653c220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:14:02,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-14 03:14:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 03:14:02,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:02,854 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 03:14:02,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:02,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 93538, now seen corresponding path program 1 times [2024-11-14 03:14:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:02,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516212328] [2024-11-14 03:14:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:03,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516212328] [2024-11-14 03:14:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516212328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:14:03,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:14:03,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 03:14:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788730877] [2024-11-14 03:14:03,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:14:03,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:14:03,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:14:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,055 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:03,086 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-14 03:14:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:14:03,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-14 03:14:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:03,095 INFO L225 Difference]: With dead ends: 28 [2024-11-14 03:14:03,096 INFO L226 Difference]: Without dead ends: 26 [2024-11-14 03:14:03,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,101 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:03,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-14 03:14:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-14 03:14:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-14 03:14:03,135 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 3 [2024-11-14 03:14:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:03,135 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-14 03:14:03,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-14 03:14:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:14:03,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:03,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:14:03,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:14:03,137 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:03,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2899722, now seen corresponding path program 1 times [2024-11-14 03:14:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093846182] [2024-11-14 03:14:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:03,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:03,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:03,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093846182] [2024-11-14 03:14:03,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093846182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:14:03,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:14:03,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 03:14:03,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831133288] [2024-11-14 03:14:03,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:14:03,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:14:03,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:14:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,180 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:03,211 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-14 03:14:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:14:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:14:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:03,213 INFO L225 Difference]: With dead ends: 30 [2024-11-14 03:14:03,213 INFO L226 Difference]: Without dead ends: 29 [2024-11-14 03:14:03,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,214 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:03,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-14 03:14:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-14 03:14:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.7) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-14 03:14:03,220 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 4 [2024-11-14 03:14:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:03,220 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-14 03:14:03,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-14 03:14:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:14:03,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:03,221 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:03,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:14:03,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:03,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:03,222 INFO L85 PathProgramCache]: Analyzing trace with hash 486318951, now seen corresponding path program 1 times [2024-11-14 03:14:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:03,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092448507] [2024-11-14 03:14:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:03,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:03,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:03,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092448507] [2024-11-14 03:14:03,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092448507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:14:03,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:14:03,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 03:14:03,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30998538] [2024-11-14 03:14:03,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:14:03,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:14:03,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:03,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:14:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,280 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:03,317 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-11-14 03:14:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:14:03,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 03:14:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:03,319 INFO L225 Difference]: With dead ends: 52 [2024-11-14 03:14:03,319 INFO L226 Difference]: Without dead ends: 50 [2024-11-14 03:14:03,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,320 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:03,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-14 03:14:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-11-14 03:14:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-11-14 03:14:03,336 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 7 [2024-11-14 03:14:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:03,340 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-11-14 03:14:03,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-11-14 03:14:03,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:14:03,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:03,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:03,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:14:03,341 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:03,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2103981649, now seen corresponding path program 1 times [2024-11-14 03:14:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:03,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005343241] [2024-11-14 03:14:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:03,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:03,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005343241] [2024-11-14 03:14:03,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005343241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:14:03,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:14:03,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 03:14:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713119418] [2024-11-14 03:14:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:14:03,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:14:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:14:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,397 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:03,439 INFO L93 Difference]: Finished difference Result 82 states and 116 transitions. [2024-11-14 03:14:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:14:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 03:14:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:03,441 INFO L225 Difference]: With dead ends: 82 [2024-11-14 03:14:03,441 INFO L226 Difference]: Without dead ends: 80 [2024-11-14 03:14:03,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:03,442 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:03,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-14 03:14:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2024-11-14 03:14:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.7121212121212122) internal successors, (113), 74 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 113 transitions. [2024-11-14 03:14:03,452 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 113 transitions. Word has length 8 [2024-11-14 03:14:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:03,453 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 113 transitions. [2024-11-14 03:14:03,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 113 transitions. [2024-11-14 03:14:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:14:03,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:03,454 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-14 03:14:03,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:14:03,454 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:03,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2102829730, now seen corresponding path program 1 times [2024-11-14 03:14:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887262553] [2024-11-14 03:14:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:03,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:03,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887262553] [2024-11-14 03:14:03,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887262553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:03,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53460949] [2024-11-14 03:14:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:03,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:03,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:03,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:03,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:14:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:03,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:14:03,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:03,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:03,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53460949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:03,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1665902060] [2024-11-14 03:14:03,750 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-14 03:14:03,751 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:03,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:03,760 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:03,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:04,166 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:04,383 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '481#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 03:14:04,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:04,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:04,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-14 03:14:04,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549738373] [2024-11-14 03:14:04,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:04,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:14:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:04,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:14:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:14:04,390 INFO L87 Difference]: Start difference. First operand 75 states and 113 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:04,482 INFO L93 Difference]: Finished difference Result 230 states and 341 transitions. [2024-11-14 03:14:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:14:04,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-14 03:14:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:04,485 INFO L225 Difference]: With dead ends: 230 [2024-11-14 03:14:04,485 INFO L226 Difference]: Without dead ends: 229 [2024-11-14 03:14:04,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:14:04,486 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:04,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 131 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:14:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-14 03:14:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 209. [2024-11-14 03:14:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 200 states have (on average 1.65) internal successors, (330), 208 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 330 transitions. [2024-11-14 03:14:04,518 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 330 transitions. Word has length 8 [2024-11-14 03:14:04,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:04,518 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 330 transitions. [2024-11-14 03:14:04,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 330 transitions. [2024-11-14 03:14:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:14:04,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:04,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:04,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:14:04,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:04,724 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:04,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -798729936, now seen corresponding path program 1 times [2024-11-14 03:14:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32234444] [2024-11-14 03:14:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:04,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32234444] [2024-11-14 03:14:04,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32234444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:14:04,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:14:04,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 03:14:04,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9497085] [2024-11-14 03:14:04,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:14:04,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:14:04,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:04,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:14:04,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:04,770 INFO L87 Difference]: Start difference. First operand 209 states and 330 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:04,809 INFO L93 Difference]: Finished difference Result 353 states and 554 transitions. [2024-11-14 03:14:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:14:04,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-14 03:14:04,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:04,812 INFO L225 Difference]: With dead ends: 353 [2024-11-14 03:14:04,812 INFO L226 Difference]: Without dead ends: 351 [2024-11-14 03:14:04,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:04,813 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:04,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-14 03:14:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 338. [2024-11-14 03:14:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 329 states have (on average 1.5623100303951367) internal successors, (514), 337 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 514 transitions. [2024-11-14 03:14:04,865 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 514 transitions. Word has length 9 [2024-11-14 03:14:04,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:04,865 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 514 transitions. [2024-11-14 03:14:04,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 514 transitions. [2024-11-14 03:14:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 03:14:04,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:04,866 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:04,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:14:04,866 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:04,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:04,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1009175832, now seen corresponding path program 1 times [2024-11-14 03:14:04,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:04,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188154298] [2024-11-14 03:14:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:04,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:04,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188154298] [2024-11-14 03:14:04,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188154298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:14:04,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:14:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 03:14:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293234811] [2024-11-14 03:14:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:14:04,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:14:04,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:14:04,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:04,924 INFO L87 Difference]: Start difference. First operand 338 states and 514 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:04,964 INFO L93 Difference]: Finished difference Result 564 states and 855 transitions. [2024-11-14 03:14:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:14:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 03:14:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:04,968 INFO L225 Difference]: With dead ends: 564 [2024-11-14 03:14:04,968 INFO L226 Difference]: Without dead ends: 562 [2024-11-14 03:14:04,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:14:04,969 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:04,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-14 03:14:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 557. [2024-11-14 03:14:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 548 states have (on average 1.5018248175182483) internal successors, (823), 556 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 823 transitions. [2024-11-14 03:14:05,010 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 823 transitions. Word has length 10 [2024-11-14 03:14:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:05,010 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 823 transitions. [2024-11-14 03:14:05,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 823 transitions. [2024-11-14 03:14:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:14:05,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:05,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 03:14:05,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:14:05,016 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:05,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash 316193152, now seen corresponding path program 1 times [2024-11-14 03:14:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567959373] [2024-11-14 03:14:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:05,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:05,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567959373] [2024-11-14 03:14:05,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567959373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:05,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474809279] [2024-11-14 03:14:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:05,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:05,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:05,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:05,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:14:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:05,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:14:05,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:05,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:05,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474809279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:05,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899427969] [2024-11-14 03:14:05,228 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 03:14:05,229 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:05,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:05,229 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:05,229 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:05,452 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:05,744 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3016#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-14 03:14:05,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:05,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-14 03:14:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543841754] [2024-11-14 03:14:05,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:05,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:14:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:14:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:14:05,747 INFO L87 Difference]: Start difference. First operand 557 states and 823 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:05,841 INFO L93 Difference]: Finished difference Result 1057 states and 1610 transitions. [2024-11-14 03:14:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:14:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 03:14:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:05,848 INFO L225 Difference]: With dead ends: 1057 [2024-11-14 03:14:05,848 INFO L226 Difference]: Without dead ends: 1055 [2024-11-14 03:14:05,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:14:05,850 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 126 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:05,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 112 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:14:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2024-11-14 03:14:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 915. [2024-11-14 03:14:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 906 states have (on average 1.520971302428256) internal successors, (1378), 914 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1378 transitions. [2024-11-14 03:14:05,927 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1378 transitions. Word has length 15 [2024-11-14 03:14:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:05,927 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1378 transitions. [2024-11-14 03:14:05,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1378 transitions. [2024-11-14 03:14:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:14:05,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:05,931 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:05,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:14:06,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 03:14:06,131 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:06,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:06,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1858121041, now seen corresponding path program 1 times [2024-11-14 03:14:06,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:06,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689372100] [2024-11-14 03:14:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:06,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:06,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689372100] [2024-11-14 03:14:06,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689372100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:06,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424863007] [2024-11-14 03:14:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:06,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:06,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:06,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:14:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:06,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:14:06,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:06,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424863007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748811245] [2024-11-14 03:14:06,363 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 03:14:06,363 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:06,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:06,367 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:06,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:06,543 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:06,779 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5248#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-14 03:14:06,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:06,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-14 03:14:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937907267] [2024-11-14 03:14:06,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:06,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:14:06,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:14:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:14:06,781 INFO L87 Difference]: Start difference. First operand 915 states and 1378 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:06,885 INFO L93 Difference]: Finished difference Result 1570 states and 2431 transitions. [2024-11-14 03:14:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:14:06,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 03:14:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:06,893 INFO L225 Difference]: With dead ends: 1570 [2024-11-14 03:14:06,893 INFO L226 Difference]: Without dead ends: 1568 [2024-11-14 03:14:06,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:14:06,895 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 104 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:06,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 88 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2024-11-14 03:14:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1076. [2024-11-14 03:14:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1068 states have (on average 1.506554307116105) internal successors, (1609), 1075 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1609 transitions. [2024-11-14 03:14:06,977 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1609 transitions. Word has length 15 [2024-11-14 03:14:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:06,978 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1609 transitions. [2024-11-14 03:14:06,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1609 transitions. [2024-11-14 03:14:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:14:06,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:06,983 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 03:14:07,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:14:07,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-14 03:14:07,188 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:07,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:07,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1705955168, now seen corresponding path program 1 times [2024-11-14 03:14:07,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:07,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672957085] [2024-11-14 03:14:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:07,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:07,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672957085] [2024-11-14 03:14:07,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672957085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255012038] [2024-11-14 03:14:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:07,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:07,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:07,240 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:07,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:14:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:07,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:14:07,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:07,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255012038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [834507166] [2024-11-14 03:14:07,374 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 03:14:07,374 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:07,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:07,375 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:07,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:07,524 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:07,785 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8232#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 03:14:07,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:07,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:07,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-14 03:14:07,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639918181] [2024-11-14 03:14:07,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:07,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:14:07,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:14:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:14:07,787 INFO L87 Difference]: Start difference. First operand 1076 states and 1609 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:07,915 INFO L93 Difference]: Finished difference Result 2448 states and 3821 transitions. [2024-11-14 03:14:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:14:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-14 03:14:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:07,933 INFO L225 Difference]: With dead ends: 2448 [2024-11-14 03:14:07,933 INFO L226 Difference]: Without dead ends: 2446 [2024-11-14 03:14:07,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:14:07,937 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 90 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:07,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 107 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:14:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2024-11-14 03:14:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2127. [2024-11-14 03:14:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2119 states have (on average 1.5181689476168003) internal successors, (3217), 2126 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3217 transitions. [2024-11-14 03:14:08,052 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3217 transitions. Word has length 19 [2024-11-14 03:14:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:08,052 INFO L471 AbstractCegarLoop]: Abstraction has 2127 states and 3217 transitions. [2024-11-14 03:14:08,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3217 transitions. [2024-11-14 03:14:08,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:14:08,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:08,056 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:08,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:14:08,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 03:14:08,257 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:08,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash -740220573, now seen corresponding path program 1 times [2024-11-14 03:14:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:08,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764646446] [2024-11-14 03:14:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:08,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:08,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764646446] [2024-11-14 03:14:08,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764646446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543987892] [2024-11-14 03:14:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:08,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:08,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:08,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:08,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:14:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:08,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:14:08,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:08,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:08,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543987892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:08,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [697551249] [2024-11-14 03:14:08,447 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:14:08,447 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:08,447 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:08,447 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:08,447 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:08,573 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:08,847 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13296#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 03:14:08,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:08,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:08,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-14 03:14:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341621529] [2024-11-14 03:14:08,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:08,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:14:08,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:14:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:14:08,851 INFO L87 Difference]: Start difference. First operand 2127 states and 3217 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:08,972 INFO L93 Difference]: Finished difference Result 4024 states and 6271 transitions. [2024-11-14 03:14:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:14:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-14 03:14:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:08,991 INFO L225 Difference]: With dead ends: 4024 [2024-11-14 03:14:08,992 INFO L226 Difference]: Without dead ends: 4022 [2024-11-14 03:14:08,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:14:08,997 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 99 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:08,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 84 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2024-11-14 03:14:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 2621. [2024-11-14 03:14:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 2614 states have (on average 1.494644223412395) internal successors, (3907), 2620 states have internal predecessors, (3907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:09,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3907 transitions. [2024-11-14 03:14:09,107 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3907 transitions. Word has length 19 [2024-11-14 03:14:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:09,108 INFO L471 AbstractCegarLoop]: Abstraction has 2621 states and 3907 transitions. [2024-11-14 03:14:09,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3907 transitions. [2024-11-14 03:14:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:14:09,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:09,109 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1] [2024-11-14 03:14:09,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:09,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 03:14:09,310 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:09,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -675742630, now seen corresponding path program 2 times [2024-11-14 03:14:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455582550] [2024-11-14 03:14:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 03:14:09,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:09,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455582550] [2024-11-14 03:14:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455582550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:09,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213859649] [2024-11-14 03:14:09,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:14:09,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:09,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:09,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:09,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:14:09,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 03:14:09,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:09,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:14:09,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 03:14:09,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 03:14:09,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213859649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:09,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1230559333] [2024-11-14 03:14:09,529 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-14 03:14:09,531 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:09,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:09,531 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:09,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:09,651 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:09,775 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20598#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 03:14:09,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:09,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:09,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-14 03:14:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309401658] [2024-11-14 03:14:09,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:09,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:14:09,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:14:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:14:09,777 INFO L87 Difference]: Start difference. First operand 2621 states and 3907 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:09,863 INFO L93 Difference]: Finished difference Result 2621 states and 3907 transitions. [2024-11-14 03:14:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:14:09,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-14 03:14:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:09,876 INFO L225 Difference]: With dead ends: 2621 [2024-11-14 03:14:09,876 INFO L226 Difference]: Without dead ends: 2620 [2024-11-14 03:14:09,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:14:09,879 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:09,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 48 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:14:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2024-11-14 03:14:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2269. [2024-11-14 03:14:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2263 states have (on average 1.453822359699514) internal successors, (3290), 2268 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3290 transitions. [2024-11-14 03:14:09,989 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3290 transitions. Word has length 20 [2024-11-14 03:14:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:09,989 INFO L471 AbstractCegarLoop]: Abstraction has 2269 states and 3290 transitions. [2024-11-14 03:14:09,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3290 transitions. [2024-11-14 03:14:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:14:09,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:09,990 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1] [2024-11-14 03:14:10,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:10,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 03:14:10,195 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:10,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1272147519, now seen corresponding path program 1 times [2024-11-14 03:14:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:10,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520007054] [2024-11-14 03:14:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:10,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:10,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520007054] [2024-11-14 03:14:10,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520007054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:10,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621057848] [2024-11-14 03:14:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:10,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:10,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:10,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:10,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:14:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:10,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:14:10,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:10,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621057848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:10,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709107752] [2024-11-14 03:14:10,427 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:14:10,428 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:10,428 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:10,428 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:10,428 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:10,509 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:10,703 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26026#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-14 03:14:10,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:10,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:10,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 03:14:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767714309] [2024-11-14 03:14:10,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:10,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:14:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:14:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:14:10,705 INFO L87 Difference]: Start difference. First operand 2269 states and 3290 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:10,903 INFO L93 Difference]: Finished difference Result 6564 states and 9599 transitions. [2024-11-14 03:14:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:14:10,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 03:14:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:10,930 INFO L225 Difference]: With dead ends: 6564 [2024-11-14 03:14:10,930 INFO L226 Difference]: Without dead ends: 6563 [2024-11-14 03:14:10,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:14:10,935 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:10,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 141 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:14:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2024-11-14 03:14:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 5369. [2024-11-14 03:14:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5363 states have (on average 1.4501212008204363) internal successors, (7777), 5368 states have internal predecessors, (7777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 7777 transitions. [2024-11-14 03:14:11,211 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 7777 transitions. Word has length 24 [2024-11-14 03:14:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:11,211 INFO L471 AbstractCegarLoop]: Abstraction has 5369 states and 7777 transitions. [2024-11-14 03:14:11,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 7777 transitions. [2024-11-14 03:14:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 03:14:11,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:11,212 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1] [2024-11-14 03:14:11,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:11,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 03:14:11,413 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:11,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash 819809432, now seen corresponding path program 1 times [2024-11-14 03:14:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:11,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811698629] [2024-11-14 03:14:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:11,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:11,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811698629] [2024-11-14 03:14:11,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811698629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:11,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792467692] [2024-11-14 03:14:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:11,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:11,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:11,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:11,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:14:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:11,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:14:11,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:11,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:11,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792467692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:11,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1089035884] [2024-11-14 03:14:11,688 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 03:14:11,688 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:11,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:11,688 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:11,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:11,794 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:12,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39020#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 03:14:12,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:12,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:12,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 03:14:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666793665] [2024-11-14 03:14:12,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:12,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:14:12,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:12,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:14:12,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:14:12,081 INFO L87 Difference]: Start difference. First operand 5369 states and 7777 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:12,499 INFO L93 Difference]: Finished difference Result 15528 states and 22703 transitions. [2024-11-14 03:14:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:14:12,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-14 03:14:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:12,559 INFO L225 Difference]: With dead ends: 15528 [2024-11-14 03:14:12,560 INFO L226 Difference]: Without dead ends: 15527 [2024-11-14 03:14:12,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:14:12,567 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 106 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:12,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 141 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:14:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2024-11-14 03:14:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 12717. [2024-11-14 03:14:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12717 states, 12711 states have (on average 1.4463063488317205) internal successors, (18384), 12716 states have internal predecessors, (18384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 18384 transitions. [2024-11-14 03:14:13,241 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 18384 transitions. Word has length 30 [2024-11-14 03:14:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:13,241 INFO L471 AbstractCegarLoop]: Abstraction has 12717 states and 18384 transitions. [2024-11-14 03:14:13,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 18384 transitions. [2024-11-14 03:14:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 03:14:13,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:13,243 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1] [2024-11-14 03:14:13,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:13,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 03:14:13,444 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:13,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -619788433, now seen corresponding path program 2 times [2024-11-14 03:14:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:13,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835707296] [2024-11-14 03:14:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:13,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835707296] [2024-11-14 03:14:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835707296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674328336] [2024-11-14 03:14:13,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:14:13,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:13,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:13,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:13,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:14:13,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 03:14:13,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:13,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:14:13,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:13,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:13,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674328336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:13,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [250949135] [2024-11-14 03:14:13,891 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 03:14:13,892 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:13,892 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:13,892 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:13,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:13,978 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:14,229 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69574#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-14 03:14:14,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:14,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:14,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-14 03:14:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182330471] [2024-11-14 03:14:14,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:14,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 03:14:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 03:14:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:14:14,231 INFO L87 Difference]: Start difference. First operand 12717 states and 18384 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:15,262 INFO L93 Difference]: Finished difference Result 43374 states and 64063 transitions. [2024-11-14 03:14:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:14:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-14 03:14:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:15,375 INFO L225 Difference]: With dead ends: 43374 [2024-11-14 03:14:15,375 INFO L226 Difference]: Without dead ends: 43372 [2024-11-14 03:14:15,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:14:15,392 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 336 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:15,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 222 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:14:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43372 states. [2024-11-14 03:14:16,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43372 to 27313. [2024-11-14 03:14:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27313 states, 27307 states have (on average 1.4249826051928076) internal successors, (38912), 27312 states have internal predecessors, (38912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27313 states to 27313 states and 38912 transitions. [2024-11-14 03:14:16,849 INFO L78 Accepts]: Start accepts. Automaton has 27313 states and 38912 transitions. Word has length 36 [2024-11-14 03:14:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:16,849 INFO L471 AbstractCegarLoop]: Abstraction has 27313 states and 38912 transitions. [2024-11-14 03:14:16,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 27313 states and 38912 transitions. [2024-11-14 03:14:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 03:14:16,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:16,859 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1] [2024-11-14 03:14:16,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:17,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 03:14:17,059 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:17,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:17,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1060679448, now seen corresponding path program 2 times [2024-11-14 03:14:17,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:17,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308103550] [2024-11-14 03:14:17,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:17,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:17,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:17,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308103550] [2024-11-14 03:14:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308103550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:17,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960215719] [2024-11-14 03:14:17,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:14:17,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:17,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:17,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:17,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:14:17,229 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 03:14:17,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:17,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:14:17,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:17,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960215719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735245671] [2024-11-14 03:14:17,433 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 03:14:17,433 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:17,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:17,433 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:17,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:17,528 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:17,734 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145695#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 03:14:17,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:17,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:17,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-14 03:14:17,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699509289] [2024-11-14 03:14:17,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:17,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 03:14:17,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:17,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 03:14:17,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:14:17,737 INFO L87 Difference]: Start difference. First operand 27313 states and 38912 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:19,761 INFO L93 Difference]: Finished difference Result 93040 states and 135517 transitions. [2024-11-14 03:14:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:14:19,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-14 03:14:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:19,950 INFO L225 Difference]: With dead ends: 93040 [2024-11-14 03:14:19,950 INFO L226 Difference]: Without dead ends: 93038 [2024-11-14 03:14:19,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:14:19,971 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 322 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:19,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 222 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:14:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93038 states. [2024-11-14 03:14:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93038 to 58637. [2024-11-14 03:14:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58637 states, 58631 states have (on average 1.4046494175436202) internal successors, (82356), 58636 states have internal predecessors, (82356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58637 states to 58637 states and 82356 transitions. [2024-11-14 03:14:22,252 INFO L78 Accepts]: Start accepts. Automaton has 58637 states and 82356 transitions. Word has length 46 [2024-11-14 03:14:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:22,253 INFO L471 AbstractCegarLoop]: Abstraction has 58637 states and 82356 transitions. [2024-11-14 03:14:22,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 58637 states and 82356 transitions. [2024-11-14 03:14:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 03:14:22,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:22,258 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1] [2024-11-14 03:14:22,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 03:14:22,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 03:14:22,463 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:22,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash -129406183, now seen corresponding path program 2 times [2024-11-14 03:14:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:22,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546871197] [2024-11-14 03:14:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:22,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546871197] [2024-11-14 03:14:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546871197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102591652] [2024-11-14 03:14:22,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:14:22,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:22,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:22,682 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:22,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 03:14:22,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-14 03:14:22,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:22,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:14:22,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:22,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102591652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861401561] [2024-11-14 03:14:22,986 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:14:22,986 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:22,987 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:22,987 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:22,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:23,042 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:23,210 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '308516#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2024-11-14 03:14:23,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:23,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:23,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-14 03:14:23,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153325715] [2024-11-14 03:14:23,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:23,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 03:14:23,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:23,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 03:14:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:14:23,212 INFO L87 Difference]: Start difference. First operand 58637 states and 82356 transitions. Second operand has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:27,659 INFO L93 Difference]: Finished difference Result 206447 states and 292608 transitions. [2024-11-14 03:14:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 03:14:27,660 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-14 03:14:27,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:28,054 INFO L225 Difference]: With dead ends: 206447 [2024-11-14 03:14:28,054 INFO L226 Difference]: Without dead ends: 206446 [2024-11-14 03:14:28,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:14:28,100 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 512 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:28,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 301 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:14:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206446 states. [2024-11-14 03:14:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206446 to 114947. [2024-11-14 03:14:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114947 states, 114941 states have (on average 1.395550760825119) internal successors, (160406), 114946 states have internal predecessors, (160406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114947 states to 114947 states and 160406 transitions. [2024-11-14 03:14:32,820 INFO L78 Accepts]: Start accepts. Automaton has 114947 states and 160406 transitions. Word has length 56 [2024-11-14 03:14:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:32,821 INFO L471 AbstractCegarLoop]: Abstraction has 114947 states and 160406 transitions. [2024-11-14 03:14:32,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:14:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 114947 states and 160406 transitions. [2024-11-14 03:14:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 03:14:32,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:32,827 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1] [2024-11-14 03:14:32,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:33,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 03:14:33,028 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-14 03:14:33,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:33,028 INFO L85 PathProgramCache]: Analyzing trace with hash -95721012, now seen corresponding path program 2 times [2024-11-14 03:14:33,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:14:33,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108861553] [2024-11-14 03:14:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:14:33,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:14:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:14:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:33,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:14:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108861553] [2024-11-14 03:14:33,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108861553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230040774] [2024-11-14 03:14:33,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:14:33,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:33,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:33,175 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:33,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b90f433-d508-4627-8777-53fc441a3ac3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 03:14:33,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-14 03:14:33,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:33,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:14:33,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:33,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:14:33,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230040774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:14:33,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015693662] [2024-11-14 03:14:33,549 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 03:14:33,549 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:14:33,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:14:33,550 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:14:33,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:14:33,619 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:33,914 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '652903#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-14 03:14:33,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:14:33,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:33,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-14 03:14:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817465209] [2024-11-14 03:14:33,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:33,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 03:14:33,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:14:33,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 03:14:33,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-11-14 03:14:33,917 INFO L87 Difference]: Start difference. First operand 114947 states and 160406 transitions. Second operand has 16 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)