./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:20:39,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:20:40,003 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:20:40,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:20:40,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:20:40,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:20:40,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:20:40,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:20:40,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:20:40,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:20:40,071 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:20:40,071 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:20:40,072 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:20:40,073 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:20:40,074 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:20:40,074 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:20:40,075 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:20:40,075 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:20:40,075 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:20:40,076 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:20:40,077 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:20:40,078 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:20:40,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:20:40,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:20:40,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:20:40,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:20:40,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:20:40,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:20:40,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:20:40,082 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:20:40,083 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:20:40,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:20:40,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:20:40,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:20:40,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:20:40,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:40,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:20:40,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:20:40,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:20:40,085 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:20:40,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:20:40,086 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:20:40,086 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:20:40,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:20:40,087 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2023-11-19 05:20:40,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:20:40,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:20:40,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:20:40,452 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:20:40,452 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:20:40,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-numeric/twisted.c [2023-11-19 05:20:43,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:20:43,989 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:20:43,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/sv-benchmarks/c/termination-numeric/twisted.c [2023-11-19 05:20:43,998 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/data/dfbe2454b/765ee22e1530436ab51101f6834e1718/FLAGd12bf51b0 [2023-11-19 05:20:44,017 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/data/dfbe2454b/765ee22e1530436ab51101f6834e1718 [2023-11-19 05:20:44,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:20:44,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:20:44,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:44,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:20:44,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:20:44,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7d7459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44, skipping insertion in model container [2023-11-19 05:20:44,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:20:44,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:44,252 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:20:44,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:44,277 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:20:44,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44 WrapperNode [2023-11-19 05:20:44,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:44,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:44,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:20:44,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:20:44,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,311 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-11-19 05:20:44,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:44,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:20:44,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:20:44,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:20:44,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:20:44,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:20:44,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:20:44,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:20:44,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (1/1) ... [2023-11-19 05:20:44,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:44,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:44,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:20:44,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:20:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:20:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:20:44,489 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:20:44,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:20:44,716 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:20:44,741 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:20:44,741 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:20:44,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:44 BoogieIcfgContainer [2023-11-19 05:20:44,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:20:44,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:20:44,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:20:44,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:20:44,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:44" (1/3) ... [2023-11-19 05:20:44,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222fd89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:44, skipping insertion in model container [2023-11-19 05:20:44,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:44" (2/3) ... [2023-11-19 05:20:44,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222fd89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:44, skipping insertion in model container [2023-11-19 05:20:44,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:44" (3/3) ... [2023-11-19 05:20:44,755 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2023-11-19 05:20:44,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:20:44,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 05:20:44,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:20:44,830 INFO L357 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, mHoare=true, 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;@5a51bb96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:20:44,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 05:20:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-11-19 05:20:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:20:44,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:44,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:20:44,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:44,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2584514, now seen corresponding path program 1 times [2023-11-19 05:20:44,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:44,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164196184] [2023-11-19 05:20:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:44,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:44,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164196184] [2023-11-19 05:20:44,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164196184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:44,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:44,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394200428] [2023-11-19 05:20:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:45,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:20:45,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:20:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:20:45,052 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:45,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:45,088 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-19 05:20:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:20:45,091 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:20:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:45,099 INFO L225 Difference]: With dead ends: 39 [2023-11-19 05:20:45,100 INFO L226 Difference]: Without dead ends: 19 [2023-11-19 05:20:45,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:20:45,108 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:45,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-19 05:20:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-19 05:20:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 18 states have internal predecessors, (22), 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) [2023-11-19 05:20:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-11-19 05:20:45,146 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 4 [2023-11-19 05:20:45,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:45,147 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-11-19 05:20:45,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-11-19 05:20:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:20:45,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:45,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:20:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:20:45,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:45,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2568145, now seen corresponding path program 1 times [2023-11-19 05:20:45,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:45,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897026546] [2023-11-19 05:20:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:45,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:45,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897026546] [2023-11-19 05:20:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897026546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:45,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:45,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482301767] [2023-11-19 05:20:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:45,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:20:45,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:20:45,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:20:45,299 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2023-11-19 05:20:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:45,360 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2023-11-19 05:20:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:20:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2023-11-19 05:20:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:45,362 INFO L225 Difference]: With dead ends: 19 [2023-11-19 05:20:45,362 INFO L226 Difference]: Without dead ends: 18 [2023-11-19 05:20:45,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:45,364 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:45,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 16 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:45,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-19 05:20:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-19 05:20:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 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) [2023-11-19 05:20:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-11-19 05:20:45,370 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 4 [2023-11-19 05:20:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:45,371 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-19 05:20:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2023-11-19 05:20:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-19 05:20:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:20:45,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:45,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:20:45,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:20:45,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:45,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:45,374 INFO L85 PathProgramCache]: Analyzing trace with hash 79612540, now seen corresponding path program 1 times [2023-11-19 05:20:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:45,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003829572] [2023-11-19 05:20:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:45,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:45,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003829572] [2023-11-19 05:20:45,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003829572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:45,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:45,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347705308] [2023-11-19 05:20:45,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:45,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:20:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:45,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:20:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:20:45,426 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-19 05:20:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:45,480 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-11-19 05:20:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:20:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2023-11-19 05:20:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:45,483 INFO L225 Difference]: With dead ends: 34 [2023-11-19 05:20:45,483 INFO L226 Difference]: Without dead ends: 33 [2023-11-19 05:20:45,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:45,485 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:45,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-19 05:20:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2023-11-19 05:20:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 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) [2023-11-19 05:20:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-11-19 05:20:45,495 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 5 [2023-11-19 05:20:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:45,498 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-11-19 05:20:45,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-19 05:20:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-11-19 05:20:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:20:45,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:45,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:20:45,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:20:45,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:45,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1827025136, now seen corresponding path program 1 times [2023-11-19 05:20:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399353310] [2023-11-19 05:20:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:45,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399353310] [2023-11-19 05:20:45,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399353310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:45,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:45,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:20:45,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69288811] [2023-11-19 05:20:45,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:45,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:45,582 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-19 05:20:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:45,660 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-19 05:20:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-19 05:20:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:45,662 INFO L225 Difference]: With dead ends: 40 [2023-11-19 05:20:45,664 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 05:20:45,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:45,666 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:45,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:45,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 05:20:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2023-11-19 05:20:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 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) [2023-11-19 05:20:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-11-19 05:20:45,682 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 6 [2023-11-19 05:20:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:45,683 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-11-19 05:20:45,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-19 05:20:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-11-19 05:20:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:20:45,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:45,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:20:45,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:20:45,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:45,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1827025086, now seen corresponding path program 1 times [2023-11-19 05:20:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:45,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738604310] [2023-11-19 05:20:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:45,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:45,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738604310] [2023-11-19 05:20:45,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738604310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:45,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:45,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:45,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632084975] [2023-11-19 05:20:45,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:45,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:20:45,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:20:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:20:45,729 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-19 05:20:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:45,759 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-11-19 05:20:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:20:45,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-19 05:20:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:45,761 INFO L225 Difference]: With dead ends: 32 [2023-11-19 05:20:45,761 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 05:20:45,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:45,763 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:45,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 05:20:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-19 05:20:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 30 states have internal predecessors, (40), 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) [2023-11-19 05:20:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-11-19 05:20:45,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 6 [2023-11-19 05:20:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:45,771 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-11-19 05:20:45,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-19 05:20:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-19 05:20:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:20:45,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:45,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:20:45,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:45,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -803204291, now seen corresponding path program 1 times [2023-11-19 05:20:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:45,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651080454] [2023-11-19 05:20:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:45,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:45,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651080454] [2023-11-19 05:20:45,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651080454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:45,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:45,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:20:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986353535] [2023-11-19 05:20:45,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:45,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:45,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:45,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:45,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:45,811 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:45,845 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2023-11-19 05:20:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:20:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:45,847 INFO L225 Difference]: With dead ends: 38 [2023-11-19 05:20:45,847 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 05:20:45,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:45,849 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:45,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 05:20:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-11-19 05:20:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 29 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) [2023-11-19 05:20:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2023-11-19 05:20:45,857 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 7 [2023-11-19 05:20:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:45,858 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2023-11-19 05:20:45,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2023-11-19 05:20:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:20:45,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:45,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:45,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:20:45,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:45,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash -803202753, now seen corresponding path program 1 times [2023-11-19 05:20:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902633251] [2023-11-19 05:20:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:45,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902633251] [2023-11-19 05:20:45,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902633251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:45,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:45,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:45,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492717038] [2023-11-19 05:20:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:45,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:20:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:20:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:20:45,921 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-11-19 05:20:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:45,958 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-11-19 05:20:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:20:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2023-11-19 05:20:45,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:45,959 INFO L225 Difference]: With dead ends: 48 [2023-11-19 05:20:45,960 INFO L226 Difference]: Without dead ends: 47 [2023-11-19 05:20:45,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:45,961 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:45,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-19 05:20:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2023-11-19 05:20:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 41 states have internal predecessors, (54), 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) [2023-11-19 05:20:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2023-11-19 05:20:45,971 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 7 [2023-11-19 05:20:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:45,972 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-11-19 05:20:45,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-11-19 05:20:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2023-11-19 05:20:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:20:45,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:45,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:20:45,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:20:45,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:45,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1691116137, now seen corresponding path program 1 times [2023-11-19 05:20:45,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:45,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235519104] [2023-11-19 05:20:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:46,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235519104] [2023-11-19 05:20:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235519104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457249491] [2023-11-19 05:20:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:46,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:46,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:46,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:20:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:46,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:20:46,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:46,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457249491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2030890745] [2023-11-19 05:20:46,341 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:20:46,342 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:46,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:46,356 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:46,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:46,892 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:47,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2030890745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:47,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:47,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2023-11-19 05:20:47,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607668079] [2023-11-19 05:20:47,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:47,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:20:47,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:20:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:20:47,192 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2023-11-19 05:20:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:47,519 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-11-19 05:20:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:47,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 9 [2023-11-19 05:20:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:47,523 INFO L225 Difference]: With dead ends: 47 [2023-11-19 05:20:47,524 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 05:20:47,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:20:47,531 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:47,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 05:20:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-11-19 05:20:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 39 states have internal predecessors, (50), 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) [2023-11-19 05:20:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2023-11-19 05:20:47,557 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 9 [2023-11-19 05:20:47,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:47,557 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2023-11-19 05:20:47,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2023-11-19 05:20:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2023-11-19 05:20:47,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:20:47,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:47,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:47,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:47,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:47,779 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:47,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:47,780 INFO L85 PathProgramCache]: Analyzing trace with hash -950341355, now seen corresponding path program 1 times [2023-11-19 05:20:47,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:47,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763329453] [2023-11-19 05:20:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:47,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763329453] [2023-11-19 05:20:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763329453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761068826] [2023-11-19 05:20:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:47,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:47,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:47,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:20:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:47,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:20:47,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:47,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:20:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761068826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:47,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:20:47,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-19 05:20:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111452303] [2023-11-19 05:20:47,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:47,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:20:47,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:20:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:20:47,968 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:48,062 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-11-19 05:20:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:20:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:48,065 INFO L225 Difference]: With dead ends: 47 [2023-11-19 05:20:48,066 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 05:20:48,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:20:48,070 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:48,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 05:20:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2023-11-19 05:20:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 40 states have internal predecessors, (51), 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) [2023-11-19 05:20:48,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-11-19 05:20:48,087 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 10 [2023-11-19 05:20:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:48,088 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-11-19 05:20:48,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-11-19 05:20:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:20:48,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:48,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:48,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 05:20:48,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:48,312 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:48,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash 604189144, now seen corresponding path program 1 times [2023-11-19 05:20:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:48,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285329098] [2023-11-19 05:20:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:48,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285329098] [2023-11-19 05:20:48,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285329098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:48,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328842499] [2023-11-19 05:20:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:48,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:48,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:48,379 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:48,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:20:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:48,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:20:48,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:48,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:48,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328842499] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:48,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [753520944] [2023-11-19 05:20:48,522 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:20:48,522 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:48,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:48,523 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:48,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:48,583 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [753520944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:48,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:48,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2023-11-19 05:20:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739687204] [2023-11-19 05:20:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:48,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:20:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:20:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:20:48,784 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) 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) [2023-11-19 05:20:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:48,854 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2023-11-19 05:20:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:20:48,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) 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 [2023-11-19 05:20:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:48,856 INFO L225 Difference]: With dead ends: 79 [2023-11-19 05:20:48,856 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 05:20:48,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:20:48,857 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:48,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 36 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 05:20:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2023-11-19 05:20:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 45 states have internal predecessors, (56), 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) [2023-11-19 05:20:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2023-11-19 05:20:48,865 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 11 [2023-11-19 05:20:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:48,866 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2023-11-19 05:20:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) 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) [2023-11-19 05:20:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2023-11-19 05:20:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:20:48,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:48,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:48,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:20:49,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:49,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2139111863, now seen corresponding path program 1 times [2023-11-19 05:20:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126880061] [2023-11-19 05:20:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:49,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126880061] [2023-11-19 05:20:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126880061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:49,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560287489] [2023-11-19 05:20:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:49,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:49,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:49,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:20:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:49,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:20:49,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:20:49,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560287489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:49,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:20:49,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-11-19 05:20:49,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675629605] [2023-11-19 05:20:49,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:49,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:20:49,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:20:49,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:20:49,357 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2023-11-19 05:20:49,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:49,457 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2023-11-19 05:20:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:20:49,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2023-11-19 05:20:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:49,459 INFO L225 Difference]: With dead ends: 46 [2023-11-19 05:20:49,459 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 05:20:49,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:20:49,460 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:49,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 14 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 05:20:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2023-11-19 05:20:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 43 states have internal predecessors, (54), 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) [2023-11-19 05:20:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-11-19 05:20:49,482 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 13 [2023-11-19 05:20:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:49,483 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-11-19 05:20:49,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2023-11-19 05:20:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-11-19 05:20:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:20:49,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:49,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 05:20:49,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:49,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:20:49,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:49,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 273576529, now seen corresponding path program 1 times [2023-11-19 05:20:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738935584] [2023-11-19 05:20:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:49,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:49,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738935584] [2023-11-19 05:20:49,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738935584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:49,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770231455] [2023-11-19 05:20:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:49,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:49,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:49,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:49,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:20:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:49,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:20:49,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:49,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770231455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:49,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1990759086] [2023-11-19 05:20:49,874 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:20:49,874 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:49,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:49,874 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:49,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:50,091 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:50,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1990759086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:50,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:50,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2023-11-19 05:20:50,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234730252] [2023-11-19 05:20:50,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:50,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:20:50,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:20:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:20:50,350 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:50,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:50,481 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2023-11-19 05:20:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:20:50,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:20:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:50,482 INFO L225 Difference]: With dead ends: 70 [2023-11-19 05:20:50,482 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 05:20:50,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:20:50,483 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:50,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 05:20:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-11-19 05:20:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-11-19 05:20:50,487 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 14 [2023-11-19 05:20:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:50,487 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-11-19 05:20:50,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-19 05:20:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:20:50,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:50,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:50,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:50,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:20:50,689 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:50,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1887958390, now seen corresponding path program 1 times [2023-11-19 05:20:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:50,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059961091] [2023-11-19 05:20:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:50,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059961091] [2023-11-19 05:20:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059961091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:50,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143341379] [2023-11-19 05:20:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:50,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:50,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:50,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:50,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:20:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:50,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:20:50,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:50,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:50,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143341379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:50,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [693582214] [2023-11-19 05:20:50,988 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:20:50,988 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:50,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:50,989 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:50,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:51,018 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [693582214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 19 [2023-11-19 05:20:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20543605] [2023-11-19 05:20:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:51,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:20:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:20:51,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:20:51,133 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-19 05:20:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:51,186 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2023-11-19 05:20:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:20:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-11-19 05:20:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:51,187 INFO L225 Difference]: With dead ends: 55 [2023-11-19 05:20:51,187 INFO L226 Difference]: Without dead ends: 36 [2023-11-19 05:20:51,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:20:51,189 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:51,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:51,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-19 05:20:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-11-19 05:20:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:20:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-19 05:20:51,195 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14 [2023-11-19 05:20:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:51,196 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-19 05:20:51,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-19 05:20:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-19 05:20:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:20:51,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:51,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:51,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 05:20:51,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:51,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1788216499, now seen corresponding path program 1 times [2023-11-19 05:20:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833195381] [2023-11-19 05:20:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:51,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:51,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833195381] [2023-11-19 05:20:51,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833195381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:51,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318077857] [2023-11-19 05:20:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:51,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:51,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:51,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:20:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:51,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:20:51,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:51,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:51,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318077857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832976860] [2023-11-19 05:20:51,751 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:20:51,751 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:51,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:51,751 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:51,752 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:52,183 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:53,076 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1769#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~k#1| 2) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:20:53,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:53,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 05:20:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489813948] [2023-11-19 05:20:53,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:53,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 05:20:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:53,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 05:20:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2023-11-19 05:20:53,079 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2023-11-19 05:20:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:53,458 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2023-11-19 05:20:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 05:20:53,459 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:20:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:53,461 INFO L225 Difference]: With dead ends: 102 [2023-11-19 05:20:53,461 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 05:20:53,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 05:20:53,462 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 94 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:53,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 48 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 05:20:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2023-11-19 05:20:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 64 states have internal predecessors, (84), 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) [2023-11-19 05:20:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2023-11-19 05:20:53,472 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 15 [2023-11-19 05:20:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:53,473 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2023-11-19 05:20:53,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2023-11-19 05:20:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2023-11-19 05:20:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:20:53,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:53,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:53,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:53,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:53,690 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:53,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1788218037, now seen corresponding path program 1 times [2023-11-19 05:20:53,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:53,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118516708] [2023-11-19 05:20:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:20:53,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118516708] [2023-11-19 05:20:53,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118516708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827328479] [2023-11-19 05:20:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:53,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:53,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:53,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:20:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:53,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:20:53,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:20:53,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:20:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827328479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:53,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [133755525] [2023-11-19 05:20:53,858 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 05:20:53,858 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:53,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:53,859 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:53,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:54,343 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:54,966 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2092#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 1 |ULTIMATE.start_f_~l#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 2147483647 |ULTIMATE.start_f_#t~post1#1|) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:20:54,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:54,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:54,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-19 05:20:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439987609] [2023-11-19 05:20:54,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:20:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:20:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:20:54,968 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2023-11-19 05:20:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:55,064 INFO L93 Difference]: Finished difference Result 126 states and 164 transitions. [2023-11-19 05:20:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:20:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:20:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:55,066 INFO L225 Difference]: With dead ends: 126 [2023-11-19 05:20:55,066 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 05:20:55,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-11-19 05:20:55,068 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:55,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 81 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:55,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 05:20:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2023-11-19 05:20:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 112 states have internal predecessors, (152), 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) [2023-11-19 05:20:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2023-11-19 05:20:55,079 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 15 [2023-11-19 05:20:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:55,079 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2023-11-19 05:20:55,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2023-11-19 05:20:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2023-11-19 05:20:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:20:55,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:55,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:55,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:55,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:55,294 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:55,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:55,294 INFO L85 PathProgramCache]: Analyzing trace with hash -398735213, now seen corresponding path program 1 times [2023-11-19 05:20:55,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:55,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806030934] [2023-11-19 05:20:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:55,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:20:55,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806030934] [2023-11-19 05:20:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806030934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:55,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:20:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042742997] [2023-11-19 05:20:55,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:55,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:55,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:55,323 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2023-11-19 05:20:55,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:55,349 INFO L93 Difference]: Finished difference Result 217 states and 290 transitions. [2023-11-19 05:20:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:55,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 05:20:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:55,351 INFO L225 Difference]: With dead ends: 217 [2023-11-19 05:20:55,352 INFO L226 Difference]: Without dead ends: 148 [2023-11-19 05:20:55,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:55,353 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 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 [2023-11-19 05:20:55,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-19 05:20:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2023-11-19 05:20:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 141 states have (on average 1.297872340425532) internal successors, (183), 143 states have internal predecessors, (183), 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) [2023-11-19 05:20:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 183 transitions. [2023-11-19 05:20:55,366 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 183 transitions. Word has length 16 [2023-11-19 05:20:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:55,366 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 183 transitions. [2023-11-19 05:20:55,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2023-11-19 05:20:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 183 transitions. [2023-11-19 05:20:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:20:55,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:55,368 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:55,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 05:20:55,368 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:55,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash -378544757, now seen corresponding path program 1 times [2023-11-19 05:20:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:55,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332740354] [2023-11-19 05:20:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:55,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332740354] [2023-11-19 05:20:55,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332740354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418217660] [2023-11-19 05:20:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:55,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:55,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:55,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:55,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:20:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:55,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:20:55,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:55,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418217660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1601937882] [2023-11-19 05:20:55,584 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 05:20:55,585 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:55,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:55,585 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:55,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:56,042 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1601937882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:56,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:56,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 18 [2023-11-19 05:20:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810712648] [2023-11-19 05:20:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:56,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:20:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:56,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:20:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:20:56,706 INFO L87 Difference]: Start difference. First operand 144 states and 183 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-11-19 05:20:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:57,059 INFO L93 Difference]: Finished difference Result 264 states and 341 transitions. [2023-11-19 05:20:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:20:57,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:20:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:57,061 INFO L225 Difference]: With dead ends: 264 [2023-11-19 05:20:57,061 INFO L226 Difference]: Without dead ends: 207 [2023-11-19 05:20:57,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:20:57,063 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:57,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-19 05:20:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 151. [2023-11-19 05:20:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 149 states have (on average 1.2416107382550337) internal successors, (185), 150 states have internal predecessors, (185), 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) [2023-11-19 05:20:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 185 transitions. [2023-11-19 05:20:57,081 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 185 transitions. Word has length 19 [2023-11-19 05:20:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:57,081 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 185 transitions. [2023-11-19 05:20:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-11-19 05:20:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 185 transitions. [2023-11-19 05:20:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:20:57,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:57,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:57,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:57,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 05:20:57,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:57,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1758484887, now seen corresponding path program 2 times [2023-11-19 05:20:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162928563] [2023-11-19 05:20:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:57,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162928563] [2023-11-19 05:20:57,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162928563] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725095543] [2023-11-19 05:20:57,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:20:57,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:57,422 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:57,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:20:57,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 05:20:57,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:20:57,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:20:57,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:57,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725095543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:57,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1862654346] [2023-11-19 05:20:57,804 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:20:57,804 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:57,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:57,804 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:57,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:58,177 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:58,968 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3639#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~k#1| 2) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:20:58,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:58,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:58,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-11-19 05:20:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726027088] [2023-11-19 05:20:58,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:58,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-19 05:20:58,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-19 05:20:58,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 05:20:58,972 INFO L87 Difference]: Start difference. First operand 151 states and 185 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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) [2023-11-19 05:20:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:59,585 INFO L93 Difference]: Finished difference Result 248 states and 299 transitions. [2023-11-19 05:20:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 05:20:59,586 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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 23 [2023-11-19 05:20:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:59,588 INFO L225 Difference]: With dead ends: 248 [2023-11-19 05:20:59,588 INFO L226 Difference]: Without dead ends: 235 [2023-11-19 05:20:59,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=586, Invalid=2494, Unknown=0, NotChecked=0, Total=3080 [2023-11-19 05:20:59,591 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 162 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:59,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 54 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:20:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-19 05:20:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 210. [2023-11-19 05:20:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 208 states have (on average 1.2211538461538463) internal successors, (254), 209 states have internal predecessors, (254), 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) [2023-11-19 05:20:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 254 transitions. [2023-11-19 05:20:59,619 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 254 transitions. Word has length 23 [2023-11-19 05:20:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:59,619 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 254 transitions. [2023-11-19 05:20:59,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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) [2023-11-19 05:20:59,619 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 254 transitions. [2023-11-19 05:20:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:20:59,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:59,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:59,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:59,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 05:20:59,842 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:20:59,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1101642217, now seen corresponding path program 3 times [2023-11-19 05:20:59,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:59,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667234649] [2023-11-19 05:20:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:59,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667234649] [2023-11-19 05:20:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667234649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721239380] [2023-11-19 05:20:59,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:20:59,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:59,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:59,975 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:00,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:21:00,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:21:00,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:21:00,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:21:00,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:00,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:00,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721239380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:00,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [85975637] [2023-11-19 05:21:00,381 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:00,381 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:00,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:00,382 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:00,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:00,708 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:01,488 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4403#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~k#1| 2) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:21:01,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:01,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:01,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-11-19 05:21:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884183016] [2023-11-19 05:21:01,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:01,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-19 05:21:01,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:01,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-19 05:21:01,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1277, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 05:21:01,491 INFO L87 Difference]: Start difference. First operand 210 states and 254 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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) [2023-11-19 05:21:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:01,961 INFO L93 Difference]: Finished difference Result 311 states and 377 transitions. [2023-11-19 05:21:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 05:21:01,962 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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 23 [2023-11-19 05:21:01,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:01,964 INFO L225 Difference]: With dead ends: 311 [2023-11-19 05:21:01,964 INFO L226 Difference]: Without dead ends: 296 [2023-11-19 05:21:01,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=536, Invalid=2434, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 05:21:01,966 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 150 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:01,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 45 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-19 05:21:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 220. [2023-11-19 05:21:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 219 states have internal predecessors, (268), 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) [2023-11-19 05:21:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 268 transitions. [2023-11-19 05:21:01,991 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 268 transitions. Word has length 23 [2023-11-19 05:21:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:01,992 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 268 transitions. [2023-11-19 05:21:01,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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) [2023-11-19 05:21:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 268 transitions. [2023-11-19 05:21:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:21:01,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:01,993 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:02,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:02,208 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:02,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash -444771066, now seen corresponding path program 2 times [2023-11-19 05:21:02,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:02,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116064200] [2023-11-19 05:21:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:21:02,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:02,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116064200] [2023-11-19 05:21:02,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116064200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:02,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336148100] [2023-11-19 05:21:02,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:21:02,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:02,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:02,362 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:02,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:21:02,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 05:21:02,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:21:02,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:21:02,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:21:02,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:21:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336148100] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [218755946] [2023-11-19 05:21:02,510 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 05:21:02,511 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:02,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:02,511 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:02,511 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:02,787 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:03,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5263#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 1 |ULTIMATE.start_f_~l#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 2147483647 |ULTIMATE.start_f_#t~post1#1|) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:21:03,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:03,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:03,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-19 05:21:03,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696742325] [2023-11-19 05:21:03,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:03,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:21:03,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:03,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:21:03,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-11-19 05:21:03,404 INFO L87 Difference]: Start difference. First operand 220 states and 268 transitions. Second operand has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 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) [2023-11-19 05:21:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:03,638 INFO L93 Difference]: Finished difference Result 281 states and 338 transitions. [2023-11-19 05:21:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:21:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 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 27 [2023-11-19 05:21:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:03,641 INFO L225 Difference]: With dead ends: 281 [2023-11-19 05:21:03,641 INFO L226 Difference]: Without dead ends: 280 [2023-11-19 05:21:03,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 05:21:03,642 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 115 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:03,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 70 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-19 05:21:03,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 140. [2023-11-19 05:21:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 139 states have internal predecessors, (166), 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) [2023-11-19 05:21:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2023-11-19 05:21:03,666 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 27 [2023-11-19 05:21:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:03,667 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2023-11-19 05:21:03,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 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) [2023-11-19 05:21:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2023-11-19 05:21:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 05:21:03,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:03,668 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:03,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:03,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:03,889 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:03,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:03,890 INFO L85 PathProgramCache]: Analyzing trace with hash 561843167, now seen corresponding path program 4 times [2023-11-19 05:21:03,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:03,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684048753] [2023-11-19 05:21:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:03,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:04,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684048753] [2023-11-19 05:21:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684048753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748544629] [2023-11-19 05:21:04,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:21:04,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:04,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:04,113 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:04,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:21:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:04,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 05:21:04,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:04,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:04,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748544629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26836868] [2023-11-19 05:21:04,667 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:04,667 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:04,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:04,667 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:04,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:04,960 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:05,726 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6031#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~k#1| 2) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:21:05,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:05,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:05,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2023-11-19 05:21:05,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408328090] [2023-11-19 05:21:05,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:05,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-19 05:21:05,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:05,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-19 05:21:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=2186, Unknown=0, NotChecked=0, Total=2652 [2023-11-19 05:21:05,730 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 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) [2023-11-19 05:21:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:06,486 INFO L93 Difference]: Finished difference Result 315 states and 365 transitions. [2023-11-19 05:21:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-19 05:21:06,487 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 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 31 [2023-11-19 05:21:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:06,489 INFO L225 Difference]: With dead ends: 315 [2023-11-19 05:21:06,489 INFO L226 Difference]: Without dead ends: 300 [2023-11-19 05:21:06,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1113, Invalid=4587, Unknown=0, NotChecked=0, Total=5700 [2023-11-19 05:21:06,492 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 294 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:06,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 63 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:21:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-19 05:21:06,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 187. [2023-11-19 05:21:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.1451612903225807) internal successors, (213), 186 states have internal predecessors, (213), 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) [2023-11-19 05:21:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 213 transitions. [2023-11-19 05:21:06,529 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 213 transitions. Word has length 31 [2023-11-19 05:21:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:06,529 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 213 transitions. [2023-11-19 05:21:06,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 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) [2023-11-19 05:21:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 213 transitions. [2023-11-19 05:21:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:21:06,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:06,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:21:06,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-19 05:21:06,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-19 05:21:06,742 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:06,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1981534792, now seen corresponding path program 1 times [2023-11-19 05:21:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:06,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664900008] [2023-11-19 05:21:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:06,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664900008] [2023-11-19 05:21:06,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664900008] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578057154] [2023-11-19 05:21:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:06,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:06,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:06,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 05:21:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:07,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 05:21:07,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:07,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:07,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578057154] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:07,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1572740827] [2023-11-19 05:21:07,554 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:07,554 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:07,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:07,555 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:07,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:08,548 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:08,786 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6954#(and (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2023-11-19 05:21:08,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:08,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:08,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2023-11-19 05:21:08,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238383776] [2023-11-19 05:21:08,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:08,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-19 05:21:08,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-19 05:21:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1969, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 05:21:08,789 INFO L87 Difference]: Start difference. First operand 187 states and 213 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 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) [2023-11-19 05:21:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:09,586 INFO L93 Difference]: Finished difference Result 390 states and 445 transitions. [2023-11-19 05:21:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-19 05:21:09,589 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 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 34 [2023-11-19 05:21:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:09,592 INFO L225 Difference]: With dead ends: 390 [2023-11-19 05:21:09,592 INFO L226 Difference]: Without dead ends: 377 [2023-11-19 05:21:09,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1026, Invalid=4524, Unknown=0, NotChecked=0, Total=5550 [2023-11-19 05:21:09,595 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 273 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:09,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 55 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:21:09,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-19 05:21:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 211. [2023-11-19 05:21:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.1571428571428573) internal successors, (243), 210 states have internal predecessors, (243), 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) [2023-11-19 05:21:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2023-11-19 05:21:09,638 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 34 [2023-11-19 05:21:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:09,638 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2023-11-19 05:21:09,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 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) [2023-11-19 05:21:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2023-11-19 05:21:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 05:21:09,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:09,640 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:09,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:09,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 05:21:09,856 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:09,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1722712174, now seen corresponding path program 1 times [2023-11-19 05:21:09,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:09,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953421287] [2023-11-19 05:21:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:09,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:10,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953421287] [2023-11-19 05:21:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953421287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367239969] [2023-11-19 05:21:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:10,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:10,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:10,208 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:10,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 05:21:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:10,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 05:21:10,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:10,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:11,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367239969] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:11,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742466167] [2023-11-19 05:21:11,250 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:11,250 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:11,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:11,250 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:11,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:12,078 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:13,268 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8086#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:21:13,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:13,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:13,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-11-19 05:21:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706482041] [2023-11-19 05:21:13,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:13,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-19 05:21:13,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:13,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-19 05:21:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=3722, Unknown=0, NotChecked=0, Total=4422 [2023-11-19 05:21:13,272 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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) [2023-11-19 05:21:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:14,751 INFO L93 Difference]: Finished difference Result 591 states and 674 transitions. [2023-11-19 05:21:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-19 05:21:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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 45 [2023-11-19 05:21:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:14,755 INFO L225 Difference]: With dead ends: 591 [2023-11-19 05:21:14,755 INFO L226 Difference]: Without dead ends: 572 [2023-11-19 05:21:14,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 79 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4985 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2185, Invalid=9157, Unknown=0, NotChecked=0, Total=11342 [2023-11-19 05:21:14,760 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 334 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:14,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 94 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:21:14,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-19 05:21:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 321. [2023-11-19 05:21:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.15625) internal successors, (370), 320 states have internal predecessors, (370), 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) [2023-11-19 05:21:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 370 transitions. [2023-11-19 05:21:14,837 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 370 transitions. Word has length 45 [2023-11-19 05:21:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:14,838 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 370 transitions. [2023-11-19 05:21:14,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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) [2023-11-19 05:21:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 370 transitions. [2023-11-19 05:21:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 05:21:14,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:14,840 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 05:21:14,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 05:21:15,060 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:15,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 460574663, now seen corresponding path program 2 times [2023-11-19 05:21:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:15,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520888921] [2023-11-19 05:21:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:15,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:15,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520888921] [2023-11-19 05:21:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520888921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986003905] [2023-11-19 05:21:15,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:21:15,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:15,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:15,407 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:15,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 05:21:15,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 05:21:15,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:21:15,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 05:21:15,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:21:15,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:21:15,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986003905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1909449288] [2023-11-19 05:21:15,602 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:15,603 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:15,603 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:15,603 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:15,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:16,566 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:16,827 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9601#(and (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2023-11-19 05:21:16,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:16,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:16,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6, 6] total 25 [2023-11-19 05:21:16,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491701963] [2023-11-19 05:21:16,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:16,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 05:21:16,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:16,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 05:21:16,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 05:21:16,830 INFO L87 Difference]: Start difference. First operand 321 states and 370 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 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) [2023-11-19 05:21:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:17,521 INFO L93 Difference]: Finished difference Result 558 states and 641 transitions. [2023-11-19 05:21:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 05:21:17,521 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-19 05:21:17,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:17,523 INFO L225 Difference]: With dead ends: 558 [2023-11-19 05:21:17,523 INFO L226 Difference]: Without dead ends: 243 [2023-11-19 05:21:17,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=497, Invalid=2809, Unknown=0, NotChecked=0, Total=3306 [2023-11-19 05:21:17,526 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 118 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:17,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 71 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-19 05:21:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 211. [2023-11-19 05:21:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0476190476190477) internal successors, (220), 210 states have internal predecessors, (220), 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) [2023-11-19 05:21:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 220 transitions. [2023-11-19 05:21:17,560 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 220 transitions. Word has length 46 [2023-11-19 05:21:17,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:17,561 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 220 transitions. [2023-11-19 05:21:17,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 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) [2023-11-19 05:21:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 220 transitions. [2023-11-19 05:21:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 05:21:17,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:17,562 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 05:21:17,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:17,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 05:21:17,766 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:17,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash -563527062, now seen corresponding path program 1 times [2023-11-19 05:21:17,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:17,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541868172] [2023-11-19 05:21:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:17,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:18,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:18,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541868172] [2023-11-19 05:21:18,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541868172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:18,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176161061] [2023-11-19 05:21:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:18,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:18,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:18,116 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:18,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 05:21:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:18,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 05:21:18,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:18,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:19,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176161061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [30278713] [2023-11-19 05:21:19,177 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:19,177 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:19,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:19,178 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:19,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:20,179 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:21,760 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10935#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:21:21,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:21,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:21,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-11-19 05:21:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689136915] [2023-11-19 05:21:21,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:21,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-19 05:21:21,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:21,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-19 05:21:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=3722, Unknown=0, NotChecked=0, Total=4422 [2023-11-19 05:21:21,764 INFO L87 Difference]: Start difference. First operand 211 states and 220 transitions. Second operand has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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) [2023-11-19 05:21:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:23,090 INFO L93 Difference]: Finished difference Result 415 states and 443 transitions. [2023-11-19 05:21:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-19 05:21:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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 49 [2023-11-19 05:21:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:23,093 INFO L225 Difference]: With dead ends: 415 [2023-11-19 05:21:23,093 INFO L226 Difference]: Without dead ends: 394 [2023-11-19 05:21:23,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 85 SyntacticMatches, 14 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5871 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2184, Invalid=10026, Unknown=0, NotChecked=0, Total=12210 [2023-11-19 05:21:23,099 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 313 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:23,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 73 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:21:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-19 05:21:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 261. [2023-11-19 05:21:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.0653846153846154) internal successors, (277), 260 states have internal predecessors, (277), 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) [2023-11-19 05:21:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 277 transitions. [2023-11-19 05:21:23,142 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 277 transitions. Word has length 49 [2023-11-19 05:21:23,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:23,143 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 277 transitions. [2023-11-19 05:21:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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) [2023-11-19 05:21:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 277 transitions. [2023-11-19 05:21:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:21:23,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:23,145 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:21:23,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:23,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 05:21:23,358 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:23,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash 592549656, now seen corresponding path program 2 times [2023-11-19 05:21:23,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:23,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817652708] [2023-11-19 05:21:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:23,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:23,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817652708] [2023-11-19 05:21:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817652708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759088492] [2023-11-19 05:21:23,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:21:23,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:23,978 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:24,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 05:21:24,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-19 05:21:24,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:21:24,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 05:21:24,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:24,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759088492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493990367] [2023-11-19 05:21:25,595 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 05:21:25,595 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:25,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:25,595 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:25,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:26,188 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:27,796 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12278#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2023-11-19 05:21:27,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:27,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:21:27,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 81 [2023-11-19 05:21:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835273721] [2023-11-19 05:21:27,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:27,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-11-19 05:21:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-11-19 05:21:27,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1300, Invalid=6890, Unknown=0, NotChecked=0, Total=8190 [2023-11-19 05:21:27,800 INFO L87 Difference]: Start difference. First operand 261 states and 277 transitions. Second operand has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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) [2023-11-19 05:21:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:29,771 INFO L93 Difference]: Finished difference Result 517 states and 551 transitions. [2023-11-19 05:21:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-19 05:21:29,772 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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 63 [2023-11-19 05:21:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:29,775 INFO L225 Difference]: With dead ends: 517 [2023-11-19 05:21:29,775 INFO L226 Difference]: Without dead ends: 494 [2023-11-19 05:21:29,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 113 SyntacticMatches, 12 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9896 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4247, Invalid=17215, Unknown=0, NotChecked=0, Total=21462 [2023-11-19 05:21:29,778 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 457 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:29,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 109 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:21:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-19 05:21:29,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 305. [2023-11-19 05:21:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.055921052631579) internal successors, (321), 304 states have internal predecessors, (321), 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) [2023-11-19 05:21:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 321 transitions. [2023-11-19 05:21:29,834 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 321 transitions. Word has length 63 [2023-11-19 05:21:29,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:29,834 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 321 transitions. [2023-11-19 05:21:29,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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) [2023-11-19 05:21:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 321 transitions. [2023-11-19 05:21:29,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 05:21:29,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:29,836 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:29,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:30,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 05:21:30,054 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:21:30,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:30,054 INFO L85 PathProgramCache]: Analyzing trace with hash 401589758, now seen corresponding path program 5 times [2023-11-19 05:21:30,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:30,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823080270] [2023-11-19 05:21:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:30,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:31,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:31,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823080270] [2023-11-19 05:21:31,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823080270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:31,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497790107] [2023-11-19 05:21:31,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:21:31,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:31,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:31,356 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:31,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be795cee-d320-4567-8e69-4ba99661cf34/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 05:21:31,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-11-19 05:21:31,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:21:31,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 05:21:31,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:21:32,694 INFO L327 TraceCheckSpWp]: Computing backward predicates...