./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-lit/mcmillan2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/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_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/mcmillan2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/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 32bit --witnessprinter.graph.data.programhash 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:40:59,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:40:59,927 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 04:40:59,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:40:59,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:40:59,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:40:59,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:40:59,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:40:59,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:40:59,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:40:59,966 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:40:59,966 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:40:59,966 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:40:59,966 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:40:59,966 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:40:59,966 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:40:59,967 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:40:59,967 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:40:59,967 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:40:59,967 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:40:59,967 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:40:59,967 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:40:59,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:40:59,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:40:59,968 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:40:59,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:40:59,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:40:59,969 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:40:59,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:40:59,970 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:40:59,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:40:59,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:40:59,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:40:59,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:40:59,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:40:59,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:40:59,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:40:59,971 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:40:59,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:40:59,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:40:59,971 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:40:59,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:40:59,972 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_7416d9ce-bd18-4abc-94c4-bc221c4ac508/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be [2024-11-14 04:41:00,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:41:00,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:41:00,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:41:00,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:41:00,394 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:41:00,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/loop-lit/mcmillan2006.i Unable to find full path for "g++" [2024-11-14 04:41:02,706 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:41:02,992 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:41:02,994 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/sv-benchmarks/c/loop-lit/mcmillan2006.i [2024-11-14 04:41:03,004 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/data/65b94e1e0/383dc0a295c345b49547974f42019dda/FLAGac77c0788 [2024-11-14 04:41:03,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/data/65b94e1e0/383dc0a295c345b49547974f42019dda [2024-11-14 04:41:03,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:41:03,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:41:03,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:41:03,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:41:03,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:41:03,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eeb82cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03, skipping insertion in model container [2024-11-14 04:41:03,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,073 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:41:03,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:41:03,319 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:41:03,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:41:03,372 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:41:03,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03 WrapperNode [2024-11-14 04:41:03,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:41:03,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:41:03,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:41:03,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:41:03,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,417 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2024-11-14 04:41:03,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:41:03,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:41:03,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:41:03,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:41:03,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:41:03,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:41:03,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:41:03,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:41:03,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (1/1) ... [2024-11-14 04:41:03,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:41:03,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:03,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:41:03,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:41:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:41:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:41:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:41:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:41:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:41:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:41:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:41:03,646 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:41:03,650 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:41:03,881 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-14 04:41:03,881 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:41:03,932 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:41:03,932 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:41:03,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:41:03 BoogieIcfgContainer [2024-11-14 04:41:03,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:41:03,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:41:03,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:41:03,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:41:03,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:41:03" (1/3) ... [2024-11-14 04:41:03,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe6c656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:41:03, skipping insertion in model container [2024-11-14 04:41:03,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:41:03" (2/3) ... [2024-11-14 04:41:03,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe6c656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:41:03, skipping insertion in model container [2024-11-14 04:41:03,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:41:03" (3/3) ... [2024-11-14 04:41:03,945 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2024-11-14 04:41:03,963 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:41:03,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG mcmillan2006.i that has 1 procedures, 14 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2024-11-14 04:41:04,036 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:41:04,055 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;@317beee3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:41:04,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 04:41:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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 04:41:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:41:04,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:04,073 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:41:04,074 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:04,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2718189, now seen corresponding path program 1 times [2024-11-14 04:41:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919053959] [2024-11-14 04:41:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:04,454 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 04:41:04,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919053959] [2024-11-14 04:41:04,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919053959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:41:04,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:41:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:41:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123868434] [2024-11-14 04:41:04,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:41:04,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:41:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:41:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:41:04,497 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 04:41:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:04,572 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2024-11-14 04:41:04,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:41:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 04:41:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:04,585 INFO L225 Difference]: With dead ends: 19 [2024-11-14 04:41:04,585 INFO L226 Difference]: Without dead ends: 15 [2024-11-14 04:41:04,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:41:04,598 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:04,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:41:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-14 04:41:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-14 04:41:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 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 04:41:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-14 04:41:04,636 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2024-11-14 04:41:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:04,638 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-14 04:41:04,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 04:41:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-14 04:41:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:41:04,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:04,639 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:41:04,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:41:04,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:04,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 84320359, now seen corresponding path program 1 times [2024-11-14 04:41:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598545860] [2024-11-14 04:41:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:04,768 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 04:41:04,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598545860] [2024-11-14 04:41:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598545860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:41:04,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:41:04,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:41:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968849954] [2024-11-14 04:41:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:41:04,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:41:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:41:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:41:04,772 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 04:41:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:04,805 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-11-14 04:41:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:41:04,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-11-14 04:41:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:04,807 INFO L225 Difference]: With dead ends: 20 [2024-11-14 04:41:04,807 INFO L226 Difference]: Without dead ends: 18 [2024-11-14 04:41:04,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:41:04,809 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:04,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:41:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-14 04:41:04,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-14 04:41:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 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 04:41:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-14 04:41:04,814 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 5 [2024-11-14 04:41:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:04,814 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-14 04:41:04,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 04:41:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-14 04:41:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 04:41:04,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:04,815 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-14 04:41:04,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:41:04,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:04,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -626761594, now seen corresponding path program 1 times [2024-11-14 04:41:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:04,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575274556] [2024-11-14 04:41:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:04,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:41:04,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:04,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575274556] [2024-11-14 04:41:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575274556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:04,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873945805] [2024-11-14 04:41:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:04,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:04,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:04,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:04,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:41:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:05,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:41:05,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:41:05,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:41:05,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873945805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:41:05,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:41:05,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-14 04:41:05,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934300745] [2024-11-14 04:41:05,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:41:05,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:41:05,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:41:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:41:05,173 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 04:41:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:05,233 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2024-11-14 04:41:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:41:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 04:41:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:05,234 INFO L225 Difference]: With dead ends: 18 [2024-11-14 04:41:05,234 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 04:41:05,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:41:05,236 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:05,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:41:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 04:41:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 04:41:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 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 04:41:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-14 04:41:05,241 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 7 [2024-11-14 04:41:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:05,241 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-14 04:41:05,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 04:41:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-14 04:41:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 04:41:05,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:05,242 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:41:05,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:41:05,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-14 04:41:05,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:05,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -567971209, now seen corresponding path program 1 times [2024-11-14 04:41:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998821663] [2024-11-14 04:41:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:41:05,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:05,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998821663] [2024-11-14 04:41:05,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998821663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:41:05,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:41:05,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:41:05,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694963517] [2024-11-14 04:41:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:41:05,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:41:05,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:05,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:41:05,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:41:05,579 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 04:41:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:05,622 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-14 04:41:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:41:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 04:41:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:05,624 INFO L225 Difference]: With dead ends: 25 [2024-11-14 04:41:05,624 INFO L226 Difference]: Without dead ends: 17 [2024-11-14 04:41:05,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:41:05,626 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:05,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:41:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-14 04:41:05,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-14 04:41:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 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 04:41:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-14 04:41:05,636 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2024-11-14 04:41:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:05,637 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-14 04:41:05,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 04:41:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-14 04:41:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 04:41:05,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:05,638 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-14 04:41:05,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:41:05,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:05,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2045227115, now seen corresponding path program 1 times [2024-11-14 04:41:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:05,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182153067] [2024-11-14 04:41:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:05,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:05,821 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 04:41:05,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:05,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182153067] [2024-11-14 04:41:05,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182153067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:05,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515996230] [2024-11-14 04:41:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:05,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:05,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:41:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:05,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:41:05,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:05,970 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 04:41:05,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:41:06,066 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 04:41:06,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515996230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:41:06,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646406695] [2024-11-14 04:41:06,098 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-14 04:41:06,099 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:41:06,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:41:06,109 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:41:06,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:41:06,909 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:07,149 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '292#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000))' at error location [2024-11-14 04:41:07,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:41:07,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:41:07,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-14 04:41:07,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019749153] [2024-11-14 04:41:07,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:41:07,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:41:07,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:07,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:41:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:41:07,153 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 04:41:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:07,214 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2024-11-14 04:41:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:41:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 04:41:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:07,217 INFO L225 Difference]: With dead ends: 27 [2024-11-14 04:41:07,217 INFO L226 Difference]: Without dead ends: 26 [2024-11-14 04:41:07,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:41:07,219 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:07,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:41:07,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-14 04:41:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-14 04:41:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 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 04:41:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-14 04:41:07,225 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 8 [2024-11-14 04:41:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:07,225 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-14 04:41:07,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 04:41:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-14 04:41:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:41:07,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:07,226 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:41:07,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:41:07,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:07,430 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:07,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1658231664, now seen corresponding path program 1 times [2024-11-14 04:41:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094486039] [2024-11-14 04:41:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:41:07,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:07,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094486039] [2024-11-14 04:41:07,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094486039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:07,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745929418] [2024-11-14 04:41:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:07,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:07,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:07,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:07,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:41:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:07,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:41:07,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:41:07,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:41:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745929418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:41:07,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:41:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-14 04:41:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207097477] [2024-11-14 04:41:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:41:07,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:41:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:41:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:41:07,664 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 04:41:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:07,706 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-14 04:41:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:41:07,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2024-11-14 04:41:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:07,707 INFO L225 Difference]: With dead ends: 26 [2024-11-14 04:41:07,707 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 04:41:07,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:41:07,708 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:07,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:41:07,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 04:41:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 04:41:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 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 04:41:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-14 04:41:07,717 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2024-11-14 04:41:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:07,718 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-14 04:41:07,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 04:41:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-14 04:41:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 04:41:07,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:07,719 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:41:07,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:41:07,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:07,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:07,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 134426050, now seen corresponding path program 1 times [2024-11-14 04:41:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:07,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881737981] [2024-11-14 04:41:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:41:08,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881737981] [2024-11-14 04:41:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881737981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027651491] [2024-11-14 04:41:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:08,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:08,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:08,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:41:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:08,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:41:08,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:41:08,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:41:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:41:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027651491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:41:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222518131] [2024-11-14 04:41:08,276 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 04:41:08,276 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:41:08,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:41:08,276 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:41:08,276 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:41:08,700 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:09,124 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '545#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000))' at error location [2024-11-14 04:41:09,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:41:09,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:41:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-14 04:41:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324420672] [2024-11-14 04:41:09,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:41:09,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:41:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:41:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:41:09,126 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 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 04:41:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:09,175 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-11-14 04:41:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:41:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 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 12 [2024-11-14 04:41:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:09,176 INFO L225 Difference]: With dead ends: 35 [2024-11-14 04:41:09,176 INFO L226 Difference]: Without dead ends: 34 [2024-11-14 04:41:09,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:41:09,178 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:09,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:41:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-14 04:41:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-14 04:41:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.1875) internal successors, (38), 33 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 04:41:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-14 04:41:09,184 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 12 [2024-11-14 04:41:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:09,184 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-14 04:41:09,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 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 04:41:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-14 04:41:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 04:41:09,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:09,185 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-14 04:41:09,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:41:09,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 04:41:09,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:09,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash -463992540, now seen corresponding path program 2 times [2024-11-14 04:41:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079418827] [2024-11-14 04:41:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:41:09,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079418827] [2024-11-14 04:41:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079418827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280561545] [2024-11-14 04:41:09,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:41:09,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:09,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:09,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:09,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:41:09,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 04:41:09,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:41:09,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:41:09,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:41:09,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:41:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:41:09,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280561545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:41:09,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [482853696] [2024-11-14 04:41:09,991 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-14 04:41:09,993 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:41:09,994 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:41:09,994 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:41:09,994 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:41:10,301 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:10,529 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '754#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000))' at error location [2024-11-14 04:41:10,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:41:10,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:41:10,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2024-11-14 04:41:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827336048] [2024-11-14 04:41:10,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:41:10,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:41:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:10,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:41:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-11-14 04:41:10,532 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 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 04:41:10,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:10,787 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-14 04:41:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:41:10,788 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 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) Word has length 17 [2024-11-14 04:41:10,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:10,789 INFO L225 Difference]: With dead ends: 37 [2024-11-14 04:41:10,789 INFO L226 Difference]: Without dead ends: 36 [2024-11-14 04:41:10,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2024-11-14 04:41:10,791 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:10,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 18 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:41:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-14 04:41:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2024-11-14 04:41:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 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 04:41:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-14 04:41:10,796 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2024-11-14 04:41:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:10,796 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-14 04:41:10,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 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 04:41:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-14 04:41:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:41:10,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:10,797 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:41:10,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:41:11,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 04:41:11,001 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:41:11,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1441941412, now seen corresponding path program 2 times [2024-11-14 04:41:11,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:11,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918602863] [2024-11-14 04:41:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 04:41:11,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:11,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918602863] [2024-11-14 04:41:11,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918602863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:11,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389503087] [2024-11-14 04:41:11,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:41:11,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:11,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:11,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:11,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:41:11,275 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 04:41:11,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:41:11,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:41:11,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 04:41:11,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:41:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 04:41:11,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389503087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:41:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1150970601] [2024-11-14 04:41:11,411 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-14 04:41:11,411 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:41:11,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:41:11,412 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:41:11,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:41:11,743 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:12,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '990#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000))' at error location [2024-11-14 04:41:12,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:41:12,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:41:12,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 12 [2024-11-14 04:41:12,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831757990] [2024-11-14 04:41:12,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:41:12,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:41:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:41:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:41:12,175 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 04:41:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:12,326 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2024-11-14 04:41:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:41:12,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 21 [2024-11-14 04:41:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:12,327 INFO L225 Difference]: With dead ends: 40 [2024-11-14 04:41:12,327 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:41:12,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-11-14 04:41:12,329 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:12,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:41:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:41:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:41:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 04:41:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:41:12,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-11-14 04:41:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:12,331 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:41:12,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 04:41:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:41:12,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:41:12,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-14 04:41:12,336 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-14 04:41:12,336 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-14 04:41:12,336 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-14 04:41:12,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 04:41:12,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-14 04:41:12,545 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:41:12,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:41:12,659 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:41:12,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:41:12 BoogieIcfgContainer [2024-11-14 04:41:12,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:41:12,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:41:12,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:41:12,679 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:41:12,681 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:41:03" (3/4) ... [2024-11-14 04:41:12,684 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:41:12,695 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-11-14 04:41:12,696 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-14 04:41:12,696 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 04:41:12,696 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:41:12,806 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:41:12,806 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:41:12,807 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:41:12,808 INFO L158 Benchmark]: Toolchain (without parser) took 9772.04ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 84.0MB in the beginning and 62.3MB in the end (delta: 21.7MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2024-11-14 04:41:12,808 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 83.9MB. Free memory is still 42.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:41:12,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.86ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 73.1MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:41:12,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.59ms. Allocated memory is still 109.1MB. Free memory was 73.1MB in the beginning and 71.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:41:12,810 INFO L158 Benchmark]: Boogie Preprocessor took 35.44ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 71.0MB in the end (delta: 846.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:41:12,811 INFO L158 Benchmark]: RCFGBuilder took 477.99ms. Allocated memory is still 109.1MB. Free memory was 71.0MB in the beginning and 59.4MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:41:12,811 INFO L158 Benchmark]: TraceAbstraction took 8742.16ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 58.6MB in the beginning and 66.1MB in the end (delta: -7.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2024-11-14 04:41:12,811 INFO L158 Benchmark]: Witness Printer took 128.26ms. Allocated memory is still 151.0MB. Free memory was 66.1MB in the beginning and 62.3MB in the end (delta: 3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:41:12,814 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 83.9MB. Free memory is still 42.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.86ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 73.1MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.59ms. Allocated memory is still 109.1MB. Free memory was 73.1MB in the beginning and 71.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.44ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 71.0MB in the end (delta: 846.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 477.99ms. Allocated memory is still 109.1MB. Free memory was 71.0MB in the beginning and 59.4MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8742.16ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 58.6MB in the beginning and 66.1MB in the end (delta: -7.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Witness Printer took 128.26ms. Allocated memory is still 151.0MB. Free memory was 66.1MB in the beginning and 62.3MB in the end (delta: 3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 168 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 296 IncrementalHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 49 mSDtfsCounter, 296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 169 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 530 SizeOfPredicates, 4 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 130/216 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((i == 0) && (n <= 1000)) || ((1 <= i) && (n <= 1000))) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((i == 0) && (n <= 1000)) || ((1 <= i) && (n <= 1000))) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:41:12,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7416d9ce-bd18-4abc-94c4-bc221c4ac508/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE